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Archive 35 | Archive 36 | Archive 37 | Archive 38 | Archive 39 | Archive 40 | → | Archive 45 |
A discussion above has revealed a deficiency in chembox . It relates to the chemical image in section 0. When the substance is a salt many articles show nonsense images as with sodium orthovanadate. This results from the way chembox is coded, which is suitable for molecules and crystal structures, but is not suited for salts containing polyatomic ions.
I suggest that chembox needs to be modified to accomodate structures relating to such salts. There should be separate parameter sets with titles "Cation" and "Anion". The result would be separate pictures of the ions, side by side. A parameter may be left empty when an ion is monatomic. For example sodium orthovanadate would only show the anion (heading orthovanadate ion?).
I tried using the parameter | ImageNameL1 = with citric acid, which does show 2 images side by side, but it did not do what was wanted.
I would normally make such modifications myself, but in this case it is not possible because chembox is not coded in HTML, a most unsatisfactory situation. Petergans ( talk) 11:13, 25 December 2015 (UTC)
|ImageNameL1=
. Sure {{Chembox}} then expects |ImageNameR1=
. -
DePiep (
talk) 17:36, 26 December 2015 (UTC)|ImageFileL1=
, |ImageFileR1=
| |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
|ImageCaption=
which can of course be suffixed with L1, R1, L2, R2 as needed to mach the images in question. Can I ask what the justification is for having "Sodium nitrate" but omitting the Na+ counter-ion from its chembox image? Surely that would just lead to confusion? --
Project Osprey (
talk) 11:17, 27 December 2015 (UTC)
| |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Thank you editors Project Osprey and Leyo for your helpful comments on the basis of which I have made the diagram at the right. I have used existing image files which are not consistent with each other regarding ionic charge. Apart from that I think this would be a much clearer presentation to use when a crystal structure image file is not available. Petergans ( talk) 11:56, 28 December 2015 (UTC)
(moved from above) Here is one draft idea which I think complements the crystal structure image that I uploaded and more than a line formula.
. Smokefoot ( talk) 03:21, 29 December 2015 (UTC)
|Section2=
and the template can not move a data row to outside of this (Properties) block into another one (top, or Section1=Identifiers). Of course, the goal is to switch to Lua some time which could solve this and many other things. -
DePiep (
talk) 19:07, 29 December 2015 (UTC)I'm interested to know how molecular models can accommodate this. I produce a lot of these myself, and I've never found a 'right' way to depict ionic species. Certainly, some of my older files will require re-doing. My current approach with these is to show the ions side by side, but not in any way that suggests they are connected. Sometimes, as in the case of olympiadane (an example which I am rather fond of), I surround the more complex ion with many smaller ones. Other times, as in the case of Brown HT, I've put the cations close to the charged parts of the anion where I thought it made sense (opposite charges do after all attract). But I suppose that could be construed as misleading if it is implying this is how they are arranged spatially.
The alternative would be to show the ions at opposite ends of the image (perhaps there could be an established rule like the cation's always on the left), or to simply show the ions in separate images (I've done that before though, and it seems... imprecise). I'd honestly rather sidestep the issue altogether and draw only the neutral molecule (or occasionally zwitterion) forms of most dyes, but when the chemical formula specifies sodium/potassium/etc, this course of action would feel inaccurate.
Either way, I shall be redoing most of my models depicting ions over the coming months, since I'd erroneously sized the alkali metal cations to their ionic radii rather than vdW. So this would be a well-timed opportunity to set things right. Hit me up for any advice on the matter.
— Jynto ( talk) 14:15, 31 December 2015 (UTC)
Can someone do the fusion of these 2 articles, Dichlorophen and Dichlorophene ? Without any action I will just replace the content of one article by a redirection to the other one. Thanks Snipre ( talk) 20:47, 6 January 2016 (UTC)
Hello, people of WikiProject Companies. I've created this message to notify active members of the project, especially to those who know a lot about or are interested in PCBs and benzaldehyde. If you are, I need help improving my article about the Clyde cancer cluster, an incident where, because of Whirlpool Corporation dumping PCBs in their Whirlpool Park property, and for being responsible for there being benzaldehyde in people's attics in the town, and were sued for this. It is definitely not a bad article. It just needs some small improvements. I'm not at all saying minor edits or improvements are bad, but I'm specifically looking for people who can help me long-term with a lot of co-research to improve the article to reach Good Article status. If you're interested in helping, the things needed to be improved are listed on Talk:Clyde cancer cluster#Improvements. In other words, more material needs to be added to improve the article, and I want more people to edit because I feel like I'm the sole editor. Regards, Philmonte101 ( talk)
After a deletion request on Commons initiated by Edgar181 I had a look at this user's uploads. It turned out that many of the structures are incorrect (e.g. covalent bonds in salts) or at least of inferior quality. Hence, I nominated a few dozens of these files for deletion (see c:Commons:WikiProject Chemistry/Deletion requests). I noticed that also some articles in en.wikipedia contain structures drawn by this user:
Could an inorganic chemist please check whether or not they may be left in the articles? -- Leyo 23:38, 17 December 2015 (UTC)
Thank you for all your reviews and comments. @ Graeme Bartlett, Smokefoot, Christian75, and EdChem: I would appreciate if you could also comment the related deletion requests. -- Leyo 00:29, 19 December 2015 (UTC)
I don't watch this page regularly, but here is a belated comment on this topic. The representation of the structure of a salt in terms of cation and anion structures is wrong in principle. In fact I recently removed such diagrams from the chemboxes in monosodium citrate, disodium citrate and trisodium citrate because they were misleading as to physical and chemical structure, let alone crystal structure. On the other hand, a diagram representing a structure might well be useful in some cases; it should then be clearly labelled so that the reader can see that the structure refers to a cation or anion as case may be.
The structure is Ammonium arsenate is particularly horrible. Not only because the anion is tatrahedral but also because the picture shows only one canonical form of the four that contribute to a resonance hybrid. Petergans ( talk) 17:23, 23 December 2015 (UTC)
Sodium uranate is the same compound how Sodium diuranate. Can someboby make only one article from both. Thanks, -- Alchemist-hp ( talk) 14:59, 8 January 2016 (UTC)
See Draft:Radical fluorination. Thank you, FoCuS contribs; talk to me! 18:05, 8 January 2016 (UTC)
![]() | |||
| |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
This concerns the graphics purporting to show the electronic structure of certain ions in the chembox and stand-alone. In the case of the sulfate ion (extracted from sulphate/chembox) there is an obvious discepancy between the valence bond structure, which looks unsymmetrical and the ball-and-stck and space-filling structures below it which look symmetrical. This arises because what is shown is one canonical form of many contributing to a resonance hybrid, as shown lower down in the sulphate article (File:Sulfate-resonance-2D.png). Though a trained chemist may understand the implicit reference to other canonical forms, the apparent contradiction will be confusing for the general reader.
The issue is widespread. Here are some of the simplest examples of unsymmetrical-looking structures. Others can be seen at c:Category:Ionic structures construction kit, pyrophosphate, pyrosulfate, etc., etc..
The double bonds in these single canonical forms are needed in order that all oxygen atoms conform to the octet rule.
On the other hand, there are many instances where symmetrical, delocalized, structures are shown. Here are some of them.
Some consistency is needed between WP articles. I suggest that the style of representation shown at the left for chromate be used in chemboxes, where appropriate, for all tetrahedral ions.
A similar style should be used for ions of other stereochemistry and in the article body where there is no chembox structure.
Petergans (
talk) 08:58, 11 January 2016 (UTC)
I have two requests relating to the chemistry section of the glyphosate article. The first relates to the File:Glyphosate synthesis from dimethyl phosphite.svg which is incorrect in that the initial reactant is paraformaldehyde rather than formaldehyde itself and in that the intermediate is a tertiary amine (third substituent CH2OH) and not secondary as shown. I request a new version that shows:
HO-(-CH2-O-)n-H + H2N-CH2-COOH ----NEt3 / CH3OH ----> (HOCH2)2NCH2-COOH ---- (CH3O)2P(=O)H (above arrow) NEt3 / CH3OH (below arrow) ----> (CH3O)2P(=O)-CH2-N(CH2OH)-CH2-COOH ---- HCl / Δ (above arrow) H2O (below arrow) ----> (HO)2P(=O)-CH2-NH-CH2-COOH
I hope this is clear. Maybe lay out as A → B ↓ C (below B) ← D (below A), in an on-its-side 'U' shape? The other diagram is to illustrate the different ionic states of glyphosate and the pH ranges in which they predominate. The four pKa values are 0.8 and 6.0 (phosphonates), 2.3 (carboxylate), and 11.0 (amine). Basically, I'm thinking a column of the five structures for increasing pH, with these contents:
Many Thanks. EdChem ( talk) 02:30, 21 December 2015 (UTC)
(CH3O)2P(=O)H + (HOCH2)2NCH2-COOH | (CH3O)2P(=O)-CH2-N(CH2OH)-CH2-COOH |
(HO)2P(=O)-CH2-NH-CH2-COOH |
Hi, I was looking for some news in the NMR field and I've discovered that my old Ph.D. supervisor has received another award from the RSC. He is Lyndon Emsley: cited on Nature, published a Science this year, recipient of the Grand Prix Charles-Leopold Mayer in 2012, now head of the RMN lab at EPFL, member of Academia Europaea, h-index of 63 etc etc...
I think I could make a decent article about him in few minutes and I don't think there is any "conflict of interest", my Ph.D. ended 3 years ago (and I was already a skilled wikipedian at the time and I never though of writing an article about him).
Do you see any potential issue? May I start my draft?-- Alexmar983 ( talk) 02:34, 21 October 2015 (UTC)
EdJohnston, Graeme Bartlett, Smokefoot: the draft is complete. I have to expand the "Research" section and find a reliable source for his year of birth.-- Alexmar983 ( talk) 12:30, 29 October 2015 (UTC)
@ Smokefoot, Graeme Bartlett, and EdJohnston: etc. So now Draft:Lyndon Emsley has a bigger scientific part (some articles on high IF journals still have to be cited, more information about paramgnetic protein is possible), and a slightly reduced biography. It may need more calibration or cut. I was thinking to write more biogrphies of NMR spectroscopists in the future so if you have any feedback, I am listening. I have no hurry at all, I am not very present on enWiki so the work is very "diluted".-- Alexmar983 ( talk) 11:42, 31 December 2015 (UTC)
I have prepared the red links for the new page, and there are some sources to be added in the protein part. Whilst refining the article, I am starting Draft:Geoffrey Bodenhausen. That also will take some time.-- Alexmar983 ( talk) 12:53, 4 January 2016 (UTC)
So It has been moved. I am reading Wikipedia:Drafts#Deleting_a_draft and I am not sure what to do with the draft redirect. Can someone link me to the best guidelines? Thanks. Also, I've inserted a quality template in the article talk.-- Alexmar983 ( talk) 18:19, 7 January 2016 (UTC)
Formula sample: Lead(II) phosphate and other inorganic compounds. What is more important: Pb3(PO4)2 or the info from the current box: O8P2Pb3 = "| Pb=3 | P=2 | O=8"? My opinion: Pb3(PO4)2. -- Alchemist-hp ( talk) 19:17, 11 January 2016 (UTC)
Could a native speaker please merge Gold#Chemistry and Gold#Chemistry 2? The user who noticed it is currently inactive. -- Leyo 02:13, 16 January 2016 (UTC)
Is there a reason why we have pages on Glutamic acid and Glutamine? One is simply the zwitterion of the other. -- Project Osprey ( talk) 13:38, 18 January 2016 (UTC)
Would someone please check the report of a problem in a formula at Talk:Acid dissociation constant/Archive 1#Reaction equilibrium formula error. Johnuniq ( talk) 21:55, 22 January 2016 (UTC)
There is a RfC at Talk:Climate change denial. Please contribute if you are interested. Biscuittin ( talk) 00:10, 28 January 2016 (UTC)
Hello everyone,
I have been working on the forensic chemistry article trying to bring it up to FA standards. So far I have gotten it to GA. If anyone has any interest in this area, suggestions on how to improve this article would be greatly appreciated it. Also, pretty sure it falls under the {{ chemistry}} purview but I'm not entirely sure if I should be adding WikiProject banners that I am not a part of. Thanks! -- Majora ( talk) 00:36, 28 January 2016 (UTC)
I've created a new article titled Holmium–magnesium–zinc quasicrystal. I am uncertain of a couple of things:
Michael Hardy ( talk) 01:05, 30 January 2016 (UTC)
This article is unsourced, but I found these citations. http://arxiv.org/ftp/cond-mat/papers/0308/0308479.pdf and http://jmicro.oxfordjournals.org/content/50/3/187.full.pdf. Please, someone, insert the citations and relevant material in the article. Petergans ( talk) 09:57, 2 February 2016 (UTC)
Forgive my presumptuousness, but I'm not sure where else to put this. In my work, I am producing a wiki documenting a lot of historic materials science and therefore one using a lot of chemical notation, and the layout performed by Chem wasn't quite what I was looking for. I started to improve upon the {{ Chem}} template, but after conferring with some wikipedia higher-ups, I switched to a parser keyword instead so that it would interact more nicely with stacked templates and infoboxes.
I'm wondering if you would be kind enough to review and kibbitz on the layout and rendering (as well as any features you can think to add)
Here's a page talking about the update:
Perhaps the next feature would be one that adds a comment when the equation isn't balanced?
You can contact me directly via wikipedia's email here
Thanks for your time! Riventree ( talk) 16:27, 6 June 2015 (UTC)
It's an alternative, not a new version of the chem template. There were three main issues I wanted to address:
{{Chem|H|2|S||O|4}}
is awkward and error prone {{#Chem: H2SO4}}
produces the same (actually, slightly better) layout.There's a bunch of other stuff too. Crystal notation, ΔH notation, etc. Have a look at the link above, it has a fairly good description of the features. Riventree ( talk) 20:45, 10 June 2015 (UTC)
Sooo.... I'm new to contributing to MediaWiki/Wikipedia on the infrastructure side. How do I do what Christian75 was talking about? "Publish somewhere on enwiki in the module namespace"? I have the php, css, test page, and doc page ready to go... I just don't know where to put it where people can check it out.
Help, help! Send instructions or a link (I promise I read everywhere I could think of, but apparently not the right places yet)
Riventree ( talk) 01:56, 11 June 2015 (UTC)
Riventree ( talk) 05:08, 14 June 2015 (UTC)
{{Chem|H|2|O}}
→ H{{Infobox drug/chem styled|O=1|H=2}}
→
H2
O (used by {{
Infobox drug}}{{Chembox Elements/molecular formula|O=1|H=2}}
→ H2O (used by {{
Chembox}}){{Chem2|H2O}}
→ H2O (Christian75 21:48 below){{Chem2|X2+}}
→ X+2 seems to be ambiguous: It may stand for X2+ and X2+. How do we deal with that issue? --
Leyo 09:21, 13 July 2015 (UTC)
{{Chem2|X2+}}
→ X+2{{Chem2|X+2}}
→ X+2|charge=
, but that would not work in the full reaction option Chris75 has build. -
DePiep (
talk) 12:26, 13 July 2015 (UTC)
{{Chem2|X2+}}
→ X+2{{Chem2|X(2+)}}
→ X2+
Christian75 (
talk) 14:02, 13 July 2015 (UTC)There will be a new tag <ce>
deployed with the math extension on
Thursday, 11 February 2016
which comes with the functionality of the mhchem LaTeX extension. It would be great to move the documentation
https://demo.formulasearchengine.com/wiki/Mhchem
to a place where people that edit Wikipdia would find it.-- Physikerwelt ( talk) 21:21, 8 February 2016 (UTC)
Can someone please take a look at Draft:Meso-zeaxanthin. I'm also posting at Wikipedia:WikiProject Molecular and Cell Biology, since I think it could be evaluated by someone from either group. Thanks in advance. Onel5969 TT me 13:06, 4 February 2016 (UTC)
![]() Hello, |
Could someone please give all the examples on Help:Displaying_a_formula#Examples_3 titles? That would make it easier to search for them. I can't do it because I don't know anything about chemistry. -- Ysangkok ( talk) 23:59, 27 February 2016 (UTC)
The usage and primary topic of " plasma" is under discussion, see talk:plasma (physics) -- 70.51.46.39 ( talk) 05:51, 11 March 2016 (UTC)
I've long needed help from chemists on the William Lofland Dudley article. As there are no chemistry articles in the GA queue, I thought I would bring attention to it. Cake ( talk) 16:16, 11 March 2016 (UTC)
I've proposed to add it to WP:VA, however it has never gained any votes for more than one month. This is no acceptable, since analytical chemistry is a vital topic and there should be many people willing to participate in the voting of the proposal. So I notified it here to encourage members of this WikiProject to participate.-- RekishiEJ ( talk) 06:19, 20 March 2016 (UTC)
There's an edit-a-thon going on this Sunday at ACS headquarters in Washington, D.C. on the topic of Computers in Chemistry. If you have any suggestions for articles to improve or create, please add them at Wikipedia:Meetup/DC/ACS March 2016. You can also sign up to participate remotely yourself. Antony–22 ( talk⁄ contribs) 01:21, 16 March 2016 (UTC)
@ Ian (Wiki Ed): A number of homework essays are being dropped onto Wikipedia by students at UCLA. Here is one two courses:
The topics are pretty esoteric. The instructors appear to have no editing experience in Wikipedia nor have they demonstrated any involvement with refining the articles. To me, these things are unfortunate because good talent is being wasted on themes that are ill-conceived and unsupervised. Some of the topics are somewhere between fictional and proposals, such as Iron complexes in cancer treatment (hint: there are none). I guess once the students are done, these articles can be refashioned, but it would have been nice if they were better conceived from the start. -- Smokefoot ( talk) 19:22, 20 March 2016 (UTC)
Alexander Street Press (ASP) is an electronic academic database publisher. Its "Academic Video Online" collection includes videos in a range of subject areas, including news programs (notably shows like 60 minutes), music and theatre, lectures and demonstrations, and documentaries. The Academic Video Online: Premium collection would be useful for researching topics related to science, history, music and dance, anthropology, business, counseling and therapy, news, nursing, drama, and more. For more details see their website.
There are up to 30 one-year ASP accounts available to Wikipedians through this partnership. To apply for free access, please go to
WP:ASP. Cheers! {{u|
Checkingfax}} {
Talk}
07:02, 25 March 2016 (UTC)
This article needs some attention, especially in the wake of the recent bombings where TATP was used as the explosive. shoy ( reactions) 13:29, 25 March 2016 (UTC)
|reason=
from an attention banner to the talk page.
Boghog (
talk) 14:50, 25 March 2016 (UTC)See here. For more information contact the Task Group Chair: Eric Scerri <scerri@chem.ucla.edu>. Sandbh ( talk) 05:26, 28 March 2016 (UTC)
In Draft:Geoffrey Bodenhausen I am preparing another NMR biographical article. I can still do a lot of things to improve its style, that's not a long-term problem. My main issue are the sources. In this phase I am using NMR books to refine the paragraph about research, but i am concerned about the personal description (i.e. career) because I am in China at the moment and I can't google anything. Bing, Baidu and Yahoo can be used but I fell that I have a too short amount of on-line secondary sources.
So if you can take a look at it any and find some good source via google as well, your help will be appreciated. Thank you.-- Alexmar983 ( talk) 14:26, 29 March 2016 (UTC)
See Wikipedia_talk:WikiProject_Biography/Science_and_academia#guidelines_about_living_scientists-- Alexmar983 ( talk) 04:55, 30 March 2016 (UTC)
Glycan Notation Standardized At Last — Carbohydrate chemists agree on system to represent oligosaccharide structures: Has this already been implemented here, i.e. in the corresponding articles? -- Leyo 15:47, 30 March 2016 (UTC)
The file [ [3]] states incorrect / semi-correct oxidation numbers. Numbers given are only true for the right hand path (+2 for ketone, 0 for 2° alcohol, -2 for internal alkane). Left hand molecules have ox. states +1 for aldehyde, -1 for 1° alcohol, and -3 for terminal alkane. See [ [4]] if unsure. — Preceding unsigned comment added by 141.35.151.152 ( talk) 12:08, 31 March 2016 (UTC)
The usage and primary topic of " Mercury" is under discussion, see Talk:Mercury (planet) -- 70.51.45.100 ( talk) 05:04, 8 April 2016 (UTC)
There's discussion of whether to move the page to methylenedioxymethamphetamine as with LSD, THC etc. WP:CHEMNAME is silent about abbreviations as article names. Discussion at: Talk:MDMA#Hang_on_--_shouldn.27t_the_page_be_moved_to_Methylenedioxymethamphetamine.3F -- Middle 8 ( t • c | privacy • COI) 07:53, 9 April 2016 (UTC)
I left a question regarding the definition of the carbon allotrope carbyne at Talk:Linear acetylenic carbon. I would appreciate it if one of you experts could take a look. Cheers, AxelBoldt ( talk) 19:11, 10 April 2016 (UTC)
Do you think that template:convert should support an option that forces output to use scientific notation ? I've noticed there no such option at template talk:Convert. -- 70.51.45.100 ( talk) 05:33, 11 April 2016 (UTC)
Hello,
My partner and I will be adding a number of citations and new information to the Macrocycle page. We are both master level student in New York and are doing this for a class project. We have done a good amount of research on the topic and will attempt to rebuild off the existing information as much as possible. We are both new editing, so if there are large mistakes, please let us know.
-- Schlenk ( talk) 15:10, 26 April 2016 (UTC)
Just came across this edit on STiki and was unsure what to make of it. What do you reckon? FoCuS contribs; talk to me! 20:07, 14 February 2016 (UTC)
I don't really have time to fiddle with all of the mathematical markup. Please feel free to take the sources cited in hand and put the equations in. ☺ Uncle G ( talk) 23:13, 28 April 2016 (UTC)
Please contribute to the RFC on the MDMA talk page at Talk:MDMA#RFC: Chirality and drug class in lead . Part of it concerns the application of the chemistry MOS to drug articles. Seppi333 ( Insert 2¢) 11:17, 30 April 2016 (UTC)
![]() Hello WikiProject Chemistry, |
---|
This is more of a video, copyright, and editorial issue than a chemistry issue, but I am posting here because the issue concerns a video donation from the American Chemical Society.
The ACS applied a free license to a 4-minute video. At the end of the video is a ~5 second credit animation where they show their logo. Many videos have credits at the end, and many organizations who are willing to donate videos may not be willing to apply a free copyright license to their institutional logo.
At
I am seeking comment about whether Commons will accept videos that give credit to the creator at the end, and whether that credit can be in the form of a copyrighted logo that is shared with a note that it is a Commons:Commons:De minimis use of non-free imagery. The outcome of this discussion could influence the way that Wikimedia projects negotiate partnerships with all kinds of organizations. Right now, the ACS has only shared this one video.
Please comment at the Commons discussion, if you would. Blue Rasberry (talk) 16:37, 11 May 2016 (UTC)
A disambig has been rewritten by an IP editor. Please verify. Xx236 ( talk) 08:18, 17 May 2016 (UTC)
![]() | This is an archive of past discussions. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page. |
Archive 35 | Archive 36 | Archive 37 | Archive 38 | Archive 39 | Archive 40 | → | Archive 45 |
A discussion above has revealed a deficiency in chembox . It relates to the chemical image in section 0. When the substance is a salt many articles show nonsense images as with sodium orthovanadate. This results from the way chembox is coded, which is suitable for molecules and crystal structures, but is not suited for salts containing polyatomic ions.
I suggest that chembox needs to be modified to accomodate structures relating to such salts. There should be separate parameter sets with titles "Cation" and "Anion". The result would be separate pictures of the ions, side by side. A parameter may be left empty when an ion is monatomic. For example sodium orthovanadate would only show the anion (heading orthovanadate ion?).
I tried using the parameter | ImageNameL1 = with citric acid, which does show 2 images side by side, but it did not do what was wanted.
I would normally make such modifications myself, but in this case it is not possible because chembox is not coded in HTML, a most unsatisfactory situation. Petergans ( talk) 11:13, 25 December 2015 (UTC)
|ImageNameL1=
. Sure {{Chembox}} then expects |ImageNameR1=
. -
DePiep (
talk) 17:36, 26 December 2015 (UTC)|ImageFileL1=
, |ImageFileR1=
| |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
|ImageCaption=
which can of course be suffixed with L1, R1, L2, R2 as needed to mach the images in question. Can I ask what the justification is for having "Sodium nitrate" but omitting the Na+ counter-ion from its chembox image? Surely that would just lead to confusion? --
Project Osprey (
talk) 11:17, 27 December 2015 (UTC)
| |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Thank you editors Project Osprey and Leyo for your helpful comments on the basis of which I have made the diagram at the right. I have used existing image files which are not consistent with each other regarding ionic charge. Apart from that I think this would be a much clearer presentation to use when a crystal structure image file is not available. Petergans ( talk) 11:56, 28 December 2015 (UTC)
(moved from above) Here is one draft idea which I think complements the crystal structure image that I uploaded and more than a line formula.
. Smokefoot ( talk) 03:21, 29 December 2015 (UTC)
|Section2=
and the template can not move a data row to outside of this (Properties) block into another one (top, or Section1=Identifiers). Of course, the goal is to switch to Lua some time which could solve this and many other things. -
DePiep (
talk) 19:07, 29 December 2015 (UTC)I'm interested to know how molecular models can accommodate this. I produce a lot of these myself, and I've never found a 'right' way to depict ionic species. Certainly, some of my older files will require re-doing. My current approach with these is to show the ions side by side, but not in any way that suggests they are connected. Sometimes, as in the case of olympiadane (an example which I am rather fond of), I surround the more complex ion with many smaller ones. Other times, as in the case of Brown HT, I've put the cations close to the charged parts of the anion where I thought it made sense (opposite charges do after all attract). But I suppose that could be construed as misleading if it is implying this is how they are arranged spatially.
The alternative would be to show the ions at opposite ends of the image (perhaps there could be an established rule like the cation's always on the left), or to simply show the ions in separate images (I've done that before though, and it seems... imprecise). I'd honestly rather sidestep the issue altogether and draw only the neutral molecule (or occasionally zwitterion) forms of most dyes, but when the chemical formula specifies sodium/potassium/etc, this course of action would feel inaccurate.
Either way, I shall be redoing most of my models depicting ions over the coming months, since I'd erroneously sized the alkali metal cations to their ionic radii rather than vdW. So this would be a well-timed opportunity to set things right. Hit me up for any advice on the matter.
— Jynto ( talk) 14:15, 31 December 2015 (UTC)
Can someone do the fusion of these 2 articles, Dichlorophen and Dichlorophene ? Without any action I will just replace the content of one article by a redirection to the other one. Thanks Snipre ( talk) 20:47, 6 January 2016 (UTC)
Hello, people of WikiProject Companies. I've created this message to notify active members of the project, especially to those who know a lot about or are interested in PCBs and benzaldehyde. If you are, I need help improving my article about the Clyde cancer cluster, an incident where, because of Whirlpool Corporation dumping PCBs in their Whirlpool Park property, and for being responsible for there being benzaldehyde in people's attics in the town, and were sued for this. It is definitely not a bad article. It just needs some small improvements. I'm not at all saying minor edits or improvements are bad, but I'm specifically looking for people who can help me long-term with a lot of co-research to improve the article to reach Good Article status. If you're interested in helping, the things needed to be improved are listed on Talk:Clyde cancer cluster#Improvements. In other words, more material needs to be added to improve the article, and I want more people to edit because I feel like I'm the sole editor. Regards, Philmonte101 ( talk)
After a deletion request on Commons initiated by Edgar181 I had a look at this user's uploads. It turned out that many of the structures are incorrect (e.g. covalent bonds in salts) or at least of inferior quality. Hence, I nominated a few dozens of these files for deletion (see c:Commons:WikiProject Chemistry/Deletion requests). I noticed that also some articles in en.wikipedia contain structures drawn by this user:
Could an inorganic chemist please check whether or not they may be left in the articles? -- Leyo 23:38, 17 December 2015 (UTC)
Thank you for all your reviews and comments. @ Graeme Bartlett, Smokefoot, Christian75, and EdChem: I would appreciate if you could also comment the related deletion requests. -- Leyo 00:29, 19 December 2015 (UTC)
I don't watch this page regularly, but here is a belated comment on this topic. The representation of the structure of a salt in terms of cation and anion structures is wrong in principle. In fact I recently removed such diagrams from the chemboxes in monosodium citrate, disodium citrate and trisodium citrate because they were misleading as to physical and chemical structure, let alone crystal structure. On the other hand, a diagram representing a structure might well be useful in some cases; it should then be clearly labelled so that the reader can see that the structure refers to a cation or anion as case may be.
The structure is Ammonium arsenate is particularly horrible. Not only because the anion is tatrahedral but also because the picture shows only one canonical form of the four that contribute to a resonance hybrid. Petergans ( talk) 17:23, 23 December 2015 (UTC)
Sodium uranate is the same compound how Sodium diuranate. Can someboby make only one article from both. Thanks, -- Alchemist-hp ( talk) 14:59, 8 January 2016 (UTC)
See Draft:Radical fluorination. Thank you, FoCuS contribs; talk to me! 18:05, 8 January 2016 (UTC)
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Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
This concerns the graphics purporting to show the electronic structure of certain ions in the chembox and stand-alone. In the case of the sulfate ion (extracted from sulphate/chembox) there is an obvious discepancy between the valence bond structure, which looks unsymmetrical and the ball-and-stck and space-filling structures below it which look symmetrical. This arises because what is shown is one canonical form of many contributing to a resonance hybrid, as shown lower down in the sulphate article (File:Sulfate-resonance-2D.png). Though a trained chemist may understand the implicit reference to other canonical forms, the apparent contradiction will be confusing for the general reader.
The issue is widespread. Here are some of the simplest examples of unsymmetrical-looking structures. Others can be seen at c:Category:Ionic structures construction kit, pyrophosphate, pyrosulfate, etc., etc..
The double bonds in these single canonical forms are needed in order that all oxygen atoms conform to the octet rule.
On the other hand, there are many instances where symmetrical, delocalized, structures are shown. Here are some of them.
Some consistency is needed between WP articles. I suggest that the style of representation shown at the left for chromate be used in chemboxes, where appropriate, for all tetrahedral ions.
A similar style should be used for ions of other stereochemistry and in the article body where there is no chembox structure.
Petergans (
talk) 08:58, 11 January 2016 (UTC)
I have two requests relating to the chemistry section of the glyphosate article. The first relates to the File:Glyphosate synthesis from dimethyl phosphite.svg which is incorrect in that the initial reactant is paraformaldehyde rather than formaldehyde itself and in that the intermediate is a tertiary amine (third substituent CH2OH) and not secondary as shown. I request a new version that shows:
HO-(-CH2-O-)n-H + H2N-CH2-COOH ----NEt3 / CH3OH ----> (HOCH2)2NCH2-COOH ---- (CH3O)2P(=O)H (above arrow) NEt3 / CH3OH (below arrow) ----> (CH3O)2P(=O)-CH2-N(CH2OH)-CH2-COOH ---- HCl / Δ (above arrow) H2O (below arrow) ----> (HO)2P(=O)-CH2-NH-CH2-COOH
I hope this is clear. Maybe lay out as A → B ↓ C (below B) ← D (below A), in an on-its-side 'U' shape? The other diagram is to illustrate the different ionic states of glyphosate and the pH ranges in which they predominate. The four pKa values are 0.8 and 6.0 (phosphonates), 2.3 (carboxylate), and 11.0 (amine). Basically, I'm thinking a column of the five structures for increasing pH, with these contents:
Many Thanks. EdChem ( talk) 02:30, 21 December 2015 (UTC)
(CH3O)2P(=O)H + (HOCH2)2NCH2-COOH | (CH3O)2P(=O)-CH2-N(CH2OH)-CH2-COOH |
(HO)2P(=O)-CH2-NH-CH2-COOH |
Hi, I was looking for some news in the NMR field and I've discovered that my old Ph.D. supervisor has received another award from the RSC. He is Lyndon Emsley: cited on Nature, published a Science this year, recipient of the Grand Prix Charles-Leopold Mayer in 2012, now head of the RMN lab at EPFL, member of Academia Europaea, h-index of 63 etc etc...
I think I could make a decent article about him in few minutes and I don't think there is any "conflict of interest", my Ph.D. ended 3 years ago (and I was already a skilled wikipedian at the time and I never though of writing an article about him).
Do you see any potential issue? May I start my draft?-- Alexmar983 ( talk) 02:34, 21 October 2015 (UTC)
EdJohnston, Graeme Bartlett, Smokefoot: the draft is complete. I have to expand the "Research" section and find a reliable source for his year of birth.-- Alexmar983 ( talk) 12:30, 29 October 2015 (UTC)
@ Smokefoot, Graeme Bartlett, and EdJohnston: etc. So now Draft:Lyndon Emsley has a bigger scientific part (some articles on high IF journals still have to be cited, more information about paramgnetic protein is possible), and a slightly reduced biography. It may need more calibration or cut. I was thinking to write more biogrphies of NMR spectroscopists in the future so if you have any feedback, I am listening. I have no hurry at all, I am not very present on enWiki so the work is very "diluted".-- Alexmar983 ( talk) 11:42, 31 December 2015 (UTC)
I have prepared the red links for the new page, and there are some sources to be added in the protein part. Whilst refining the article, I am starting Draft:Geoffrey Bodenhausen. That also will take some time.-- Alexmar983 ( talk) 12:53, 4 January 2016 (UTC)
So It has been moved. I am reading Wikipedia:Drafts#Deleting_a_draft and I am not sure what to do with the draft redirect. Can someone link me to the best guidelines? Thanks. Also, I've inserted a quality template in the article talk.-- Alexmar983 ( talk) 18:19, 7 January 2016 (UTC)
Formula sample: Lead(II) phosphate and other inorganic compounds. What is more important: Pb3(PO4)2 or the info from the current box: O8P2Pb3 = "| Pb=3 | P=2 | O=8"? My opinion: Pb3(PO4)2. -- Alchemist-hp ( talk) 19:17, 11 January 2016 (UTC)
Could a native speaker please merge Gold#Chemistry and Gold#Chemistry 2? The user who noticed it is currently inactive. -- Leyo 02:13, 16 January 2016 (UTC)
Is there a reason why we have pages on Glutamic acid and Glutamine? One is simply the zwitterion of the other. -- Project Osprey ( talk) 13:38, 18 January 2016 (UTC)
Would someone please check the report of a problem in a formula at Talk:Acid dissociation constant/Archive 1#Reaction equilibrium formula error. Johnuniq ( talk) 21:55, 22 January 2016 (UTC)
There is a RfC at Talk:Climate change denial. Please contribute if you are interested. Biscuittin ( talk) 00:10, 28 January 2016 (UTC)
Hello everyone,
I have been working on the forensic chemistry article trying to bring it up to FA standards. So far I have gotten it to GA. If anyone has any interest in this area, suggestions on how to improve this article would be greatly appreciated it. Also, pretty sure it falls under the {{ chemistry}} purview but I'm not entirely sure if I should be adding WikiProject banners that I am not a part of. Thanks! -- Majora ( talk) 00:36, 28 January 2016 (UTC)
I've created a new article titled Holmium–magnesium–zinc quasicrystal. I am uncertain of a couple of things:
Michael Hardy ( talk) 01:05, 30 January 2016 (UTC)
This article is unsourced, but I found these citations. http://arxiv.org/ftp/cond-mat/papers/0308/0308479.pdf and http://jmicro.oxfordjournals.org/content/50/3/187.full.pdf. Please, someone, insert the citations and relevant material in the article. Petergans ( talk) 09:57, 2 February 2016 (UTC)
Forgive my presumptuousness, but I'm not sure where else to put this. In my work, I am producing a wiki documenting a lot of historic materials science and therefore one using a lot of chemical notation, and the layout performed by Chem wasn't quite what I was looking for. I started to improve upon the {{ Chem}} template, but after conferring with some wikipedia higher-ups, I switched to a parser keyword instead so that it would interact more nicely with stacked templates and infoboxes.
I'm wondering if you would be kind enough to review and kibbitz on the layout and rendering (as well as any features you can think to add)
Here's a page talking about the update:
Perhaps the next feature would be one that adds a comment when the equation isn't balanced?
You can contact me directly via wikipedia's email here
Thanks for your time! Riventree ( talk) 16:27, 6 June 2015 (UTC)
It's an alternative, not a new version of the chem template. There were three main issues I wanted to address:
{{Chem|H|2|S||O|4}}
is awkward and error prone {{#Chem: H2SO4}}
produces the same (actually, slightly better) layout.There's a bunch of other stuff too. Crystal notation, ΔH notation, etc. Have a look at the link above, it has a fairly good description of the features. Riventree ( talk) 20:45, 10 June 2015 (UTC)
Sooo.... I'm new to contributing to MediaWiki/Wikipedia on the infrastructure side. How do I do what Christian75 was talking about? "Publish somewhere on enwiki in the module namespace"? I have the php, css, test page, and doc page ready to go... I just don't know where to put it where people can check it out.
Help, help! Send instructions or a link (I promise I read everywhere I could think of, but apparently not the right places yet)
Riventree ( talk) 01:56, 11 June 2015 (UTC)
Riventree ( talk) 05:08, 14 June 2015 (UTC)
{{Chem|H|2|O}}
→ H{{Infobox drug/chem styled|O=1|H=2}}
→
H2
O (used by {{
Infobox drug}}{{Chembox Elements/molecular formula|O=1|H=2}}
→ H2O (used by {{
Chembox}}){{Chem2|H2O}}
→ H2O (Christian75 21:48 below){{Chem2|X2+}}
→ X+2 seems to be ambiguous: It may stand for X2+ and X2+. How do we deal with that issue? --
Leyo 09:21, 13 July 2015 (UTC)
{{Chem2|X2+}}
→ X+2{{Chem2|X+2}}
→ X+2|charge=
, but that would not work in the full reaction option Chris75 has build. -
DePiep (
talk) 12:26, 13 July 2015 (UTC)
{{Chem2|X2+}}
→ X+2{{Chem2|X(2+)}}
→ X2+
Christian75 (
talk) 14:02, 13 July 2015 (UTC)There will be a new tag <ce>
deployed with the math extension on
Thursday, 11 February 2016
which comes with the functionality of the mhchem LaTeX extension. It would be great to move the documentation
https://demo.formulasearchengine.com/wiki/Mhchem
to a place where people that edit Wikipdia would find it.-- Physikerwelt ( talk) 21:21, 8 February 2016 (UTC)
Can someone please take a look at Draft:Meso-zeaxanthin. I'm also posting at Wikipedia:WikiProject Molecular and Cell Biology, since I think it could be evaluated by someone from either group. Thanks in advance. Onel5969 TT me 13:06, 4 February 2016 (UTC)
![]() Hello, |
Could someone please give all the examples on Help:Displaying_a_formula#Examples_3 titles? That would make it easier to search for them. I can't do it because I don't know anything about chemistry. -- Ysangkok ( talk) 23:59, 27 February 2016 (UTC)
The usage and primary topic of " plasma" is under discussion, see talk:plasma (physics) -- 70.51.46.39 ( talk) 05:51, 11 March 2016 (UTC)
I've long needed help from chemists on the William Lofland Dudley article. As there are no chemistry articles in the GA queue, I thought I would bring attention to it. Cake ( talk) 16:16, 11 March 2016 (UTC)
I've proposed to add it to WP:VA, however it has never gained any votes for more than one month. This is no acceptable, since analytical chemistry is a vital topic and there should be many people willing to participate in the voting of the proposal. So I notified it here to encourage members of this WikiProject to participate.-- RekishiEJ ( talk) 06:19, 20 March 2016 (UTC)
There's an edit-a-thon going on this Sunday at ACS headquarters in Washington, D.C. on the topic of Computers in Chemistry. If you have any suggestions for articles to improve or create, please add them at Wikipedia:Meetup/DC/ACS March 2016. You can also sign up to participate remotely yourself. Antony–22 ( talk⁄ contribs) 01:21, 16 March 2016 (UTC)
@ Ian (Wiki Ed): A number of homework essays are being dropped onto Wikipedia by students at UCLA. Here is one two courses:
The topics are pretty esoteric. The instructors appear to have no editing experience in Wikipedia nor have they demonstrated any involvement with refining the articles. To me, these things are unfortunate because good talent is being wasted on themes that are ill-conceived and unsupervised. Some of the topics are somewhere between fictional and proposals, such as Iron complexes in cancer treatment (hint: there are none). I guess once the students are done, these articles can be refashioned, but it would have been nice if they were better conceived from the start. -- Smokefoot ( talk) 19:22, 20 March 2016 (UTC)
Alexander Street Press (ASP) is an electronic academic database publisher. Its "Academic Video Online" collection includes videos in a range of subject areas, including news programs (notably shows like 60 minutes), music and theatre, lectures and demonstrations, and documentaries. The Academic Video Online: Premium collection would be useful for researching topics related to science, history, music and dance, anthropology, business, counseling and therapy, news, nursing, drama, and more. For more details see their website.
There are up to 30 one-year ASP accounts available to Wikipedians through this partnership. To apply for free access, please go to
WP:ASP. Cheers! {{u|
Checkingfax}} {
Talk}
07:02, 25 March 2016 (UTC)
This article needs some attention, especially in the wake of the recent bombings where TATP was used as the explosive. shoy ( reactions) 13:29, 25 March 2016 (UTC)
|reason=
from an attention banner to the talk page.
Boghog (
talk) 14:50, 25 March 2016 (UTC)See here. For more information contact the Task Group Chair: Eric Scerri <scerri@chem.ucla.edu>. Sandbh ( talk) 05:26, 28 March 2016 (UTC)
In Draft:Geoffrey Bodenhausen I am preparing another NMR biographical article. I can still do a lot of things to improve its style, that's not a long-term problem. My main issue are the sources. In this phase I am using NMR books to refine the paragraph about research, but i am concerned about the personal description (i.e. career) because I am in China at the moment and I can't google anything. Bing, Baidu and Yahoo can be used but I fell that I have a too short amount of on-line secondary sources.
So if you can take a look at it any and find some good source via google as well, your help will be appreciated. Thank you.-- Alexmar983 ( talk) 14:26, 29 March 2016 (UTC)
See Wikipedia_talk:WikiProject_Biography/Science_and_academia#guidelines_about_living_scientists-- Alexmar983 ( talk) 04:55, 30 March 2016 (UTC)
Glycan Notation Standardized At Last — Carbohydrate chemists agree on system to represent oligosaccharide structures: Has this already been implemented here, i.e. in the corresponding articles? -- Leyo 15:47, 30 March 2016 (UTC)
The file [ [3]] states incorrect / semi-correct oxidation numbers. Numbers given are only true for the right hand path (+2 for ketone, 0 for 2° alcohol, -2 for internal alkane). Left hand molecules have ox. states +1 for aldehyde, -1 for 1° alcohol, and -3 for terminal alkane. See [ [4]] if unsure. — Preceding unsigned comment added by 141.35.151.152 ( talk) 12:08, 31 March 2016 (UTC)
The usage and primary topic of " Mercury" is under discussion, see Talk:Mercury (planet) -- 70.51.45.100 ( talk) 05:04, 8 April 2016 (UTC)
There's discussion of whether to move the page to methylenedioxymethamphetamine as with LSD, THC etc. WP:CHEMNAME is silent about abbreviations as article names. Discussion at: Talk:MDMA#Hang_on_--_shouldn.27t_the_page_be_moved_to_Methylenedioxymethamphetamine.3F -- Middle 8 ( t • c | privacy • COI) 07:53, 9 April 2016 (UTC)
I left a question regarding the definition of the carbon allotrope carbyne at Talk:Linear acetylenic carbon. I would appreciate it if one of you experts could take a look. Cheers, AxelBoldt ( talk) 19:11, 10 April 2016 (UTC)
Do you think that template:convert should support an option that forces output to use scientific notation ? I've noticed there no such option at template talk:Convert. -- 70.51.45.100 ( talk) 05:33, 11 April 2016 (UTC)
Hello,
My partner and I will be adding a number of citations and new information to the Macrocycle page. We are both master level student in New York and are doing this for a class project. We have done a good amount of research on the topic and will attempt to rebuild off the existing information as much as possible. We are both new editing, so if there are large mistakes, please let us know.
-- Schlenk ( talk) 15:10, 26 April 2016 (UTC)
Just came across this edit on STiki and was unsure what to make of it. What do you reckon? FoCuS contribs; talk to me! 20:07, 14 February 2016 (UTC)
I don't really have time to fiddle with all of the mathematical markup. Please feel free to take the sources cited in hand and put the equations in. ☺ Uncle G ( talk) 23:13, 28 April 2016 (UTC)
Please contribute to the RFC on the MDMA talk page at Talk:MDMA#RFC: Chirality and drug class in lead . Part of it concerns the application of the chemistry MOS to drug articles. Seppi333 ( Insert 2¢) 11:17, 30 April 2016 (UTC)
![]() Hello WikiProject Chemistry, |
---|
This is more of a video, copyright, and editorial issue than a chemistry issue, but I am posting here because the issue concerns a video donation from the American Chemical Society.
The ACS applied a free license to a 4-minute video. At the end of the video is a ~5 second credit animation where they show their logo. Many videos have credits at the end, and many organizations who are willing to donate videos may not be willing to apply a free copyright license to their institutional logo.
At
I am seeking comment about whether Commons will accept videos that give credit to the creator at the end, and whether that credit can be in the form of a copyrighted logo that is shared with a note that it is a Commons:Commons:De minimis use of non-free imagery. The outcome of this discussion could influence the way that Wikimedia projects negotiate partnerships with all kinds of organizations. Right now, the ACS has only shared this one video.
Please comment at the Commons discussion, if you would. Blue Rasberry (talk) 16:37, 11 May 2016 (UTC)
A disambig has been rewritten by an IP editor. Please verify. Xx236 ( talk) 08:18, 17 May 2016 (UTC)