This article is within the scope of WikiProject Chemicals, a daughter project of WikiProject Chemistry, which aims to improve Wikipedia's coverage of chemicals. To participate, help improve this article or visit the
project page for details on the project.ChemicalsWikipedia:WikiProject ChemicalsTemplate:WikiProject Chemicalschemicals articles
This article is within the scope of WikiProject Plants, a collaborative effort to improve the coverage of
plants and
botany on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.PlantsWikipedia:WikiProject PlantsTemplate:WikiProject Plantsplant articles
Is this 72 known(?) isomers, or the result of a calculation - with 11 olefins possibly being E/Z surely that's 211 isomers, sterics nonwithstanding? —Preceding
unsigned comment added by
86.130.133.64 (
talk)
18:07, 13 May 2008 (UTC)reply
The result is from a calculation (published in a research paper, not my own and I didn't question how they arrived at that number). Don't forget, however, that there's symmetry involved, so half the stereocenters are equivalent. 26 = 64, and I'm not sure how they arrive at 72, but I think that symmetry simplifies the total number of isomers.
Jeff Dahl (
Talk •
contribs)
22:30, 13 May 2008 (UTC)reply
UPDATE: I found a source to explain why there are 72 (cited in main article). The reason is due to steric hinderance, the 72 are the only ones sterically possible.
Jeff Dahl (
Talk •
contribs)
16:34, 26 January 2009 (UTC)reply
This article is within the scope of WikiProject Chemicals, a daughter project of WikiProject Chemistry, which aims to improve Wikipedia's coverage of chemicals. To participate, help improve this article or visit the
project page for details on the project.ChemicalsWikipedia:WikiProject ChemicalsTemplate:WikiProject Chemicalschemicals articles
This article is within the scope of WikiProject Plants, a collaborative effort to improve the coverage of
plants and
botany on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.PlantsWikipedia:WikiProject PlantsTemplate:WikiProject Plantsplant articles
Is this 72 known(?) isomers, or the result of a calculation - with 11 olefins possibly being E/Z surely that's 211 isomers, sterics nonwithstanding? —Preceding
unsigned comment added by
86.130.133.64 (
talk)
18:07, 13 May 2008 (UTC)reply
The result is from a calculation (published in a research paper, not my own and I didn't question how they arrived at that number). Don't forget, however, that there's symmetry involved, so half the stereocenters are equivalent. 26 = 64, and I'm not sure how they arrive at 72, but I think that symmetry simplifies the total number of isomers.
Jeff Dahl (
Talk •
contribs)
22:30, 13 May 2008 (UTC)reply
UPDATE: I found a source to explain why there are 72 (cited in main article). The reason is due to steric hinderance, the 72 are the only ones sterically possible.
Jeff Dahl (
Talk •
contribs)
16:34, 26 January 2009 (UTC)reply