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Questions tagged [pnictogen]

For questions about the group 15 elements — nitrogen, phosphorus, arsenic, antimony, and bismuth: their synthesis, or physical and chemical properties.

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3 answers
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Why there is no P−O−Cl bond in phosphoryl chloride?

Why is the structure of $\ce{POCl3}$ not like the left? I know the elements in period 3 or higher don’t have to follow the octet rule, but the left structure doesn’t seem to have any problems:
Kodori's user avatar
  • 21
0 votes
1 answer
143 views

Why is phosphoric acid a weak acid?

What is the reason for the phosphoric acid $\ce{H3PO4}$ being a weak acid despite having a structure similar to that of sulfuric acid $\ce{H2SO4}?$ I found some sources claiming that the resonance of ...
Kampann's user avatar
  • 19
5 votes
2 answers
197 views

Synthesizing Cyclotetrazane from Hydrazine and Diazene?

Could cyclotetrazane — a compound with nitrogen atoms arranged in a square configuration — be synthesized? A hydrogen atom would be bonded to each vertex (nitrogen atom): Could cyclotetrazane be made ...
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0 votes
1 answer
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Non-octet structures of stable nitrogen compounds

A question in my exercise book demonstrates that nitrogen cannot form non-octet structures since the most common examples — nitrogen dioxide and nitrogen monoxide — are unstable/reactive. For example, ...
Freeby Freeby's user avatar
5 votes
1 answer
328 views

Why is pyramidal structure observed in trisilylphosphine?

Why does trisilylphosphine $\ce{P(SiH3)3}$ (ICSD Entry: 72676, [1]) have a pyramidal structure while trisilylamine $\ce{N(SiH3)3}$ (ICSD Entry: 201428, [2]) is planar? I think since silicon has a ...
Substitute_Y's user avatar