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In the article Carex rosea, you can read: "In Canada, C. rosea is distributed from Nova Scotia and southern Quebec west to MN and eastern NE". What is MN and NE in Canada? Dipsacus fullonum ( talk) 12:46, 16 January 2023 (UTC)
At the article Hexachlorophosphazene, I noticed a clarification template (and yet another improperly formatted reason) attached to an unbalanced chemical reaction, which is part of the hypothesized polymerization mechanism:
NH3 + [PCl4+ → "HN=PCl3" + HCl | (1) |
There is a missing H and a loss of +1 charge unit on the right-hand side, and no explanation for the scare quotes on the complex molecule (a hypothetical phosphine imide intermediate), so I assumed that the correct reaction is one of the following, which are likely equally valid due to the nucleophile property of imides:
NH3 + [PCl4+ → HN=PCl3 + HCl + H+ | (2a) |
NH3 + [PCl4+ → [H2N−PCl3+ + HCl | (2b) |
In the article, I used Eq. 2a for continuity with te later steps, but I need someone to double-check Greenwood & Earnshaw, 2nd edition (the source that was used in this section) or other scientific literature on this topic to confirm that the correct equation is not something else entirely. – LaundryPizza03 ( d c̄) 13:12, 16 January 2023 (UTC)
Many details of the preparative reaction mechanism remain unclear but it is thought that NH4Cl partly dissociates into NH3 and HCl, and that PCl5 reacts in its ionic form PCl4+PCl6− (p. 499). Nucleophilic attack by NH3 on PCl4+ then occurs with elimination of HCl and the {HN=PCl3} attacks a second PCl4+ to give [Cl3P=N–PCl3+ and HCl. After 1 h the major (insoluble) intermediate product is [Cl3P=N–PCl3+PCl6− (i.e. P3NCl12, p. 536) and this then slowly reacts with more NH3 to give HCl and {Cl3P=N–PCl2=NH}, etc.[1]
Science desk | ||
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< January 15 | << Dec | January | Feb >> | Current desk > |
Welcome to the Wikipedia Science Reference Desk Archives |
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The page you are currently viewing is a transcluded archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
In the article Carex rosea, you can read: "In Canada, C. rosea is distributed from Nova Scotia and southern Quebec west to MN and eastern NE". What is MN and NE in Canada? Dipsacus fullonum ( talk) 12:46, 16 January 2023 (UTC)
At the article Hexachlorophosphazene, I noticed a clarification template (and yet another improperly formatted reason) attached to an unbalanced chemical reaction, which is part of the hypothesized polymerization mechanism:
NH3 + [PCl4+ → "HN=PCl3" + HCl | (1) |
There is a missing H and a loss of +1 charge unit on the right-hand side, and no explanation for the scare quotes on the complex molecule (a hypothetical phosphine imide intermediate), so I assumed that the correct reaction is one of the following, which are likely equally valid due to the nucleophile property of imides:
NH3 + [PCl4+ → HN=PCl3 + HCl + H+ | (2a) |
NH3 + [PCl4+ → [H2N−PCl3+ + HCl | (2b) |
In the article, I used Eq. 2a for continuity with te later steps, but I need someone to double-check Greenwood & Earnshaw, 2nd edition (the source that was used in this section) or other scientific literature on this topic to confirm that the correct equation is not something else entirely. – LaundryPizza03 ( d c̄) 13:12, 16 January 2023 (UTC)
Many details of the preparative reaction mechanism remain unclear but it is thought that NH4Cl partly dissociates into NH3 and HCl, and that PCl5 reacts in its ionic form PCl4+PCl6− (p. 499). Nucleophilic attack by NH3 on PCl4+ then occurs with elimination of HCl and the {HN=PCl3} attacks a second PCl4+ to give [Cl3P=N–PCl3+ and HCl. After 1 h the major (insoluble) intermediate product is [Cl3P=N–PCl3+PCl6− (i.e. P3NCl12, p. 536) and this then slowly reacts with more NH3 to give HCl and {Cl3P=N–PCl2=NH}, etc.[1]