The solid state conformation of oxo stabilised ylides: X-ray structures of four new polyoxo phosphorus ylides

被引：32

作者：

Aitken, RA ^{[1
]}

Karodia, N ^{[1
]}

Lightfoot, P ^{[1
]}

机构：

[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 2000年 / 02期

关键词：

D O I：

10.1039/a905747a

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The first X-ray structure determinations of a trioxo ylide 7, a tetraoxo ylide 8, a tetraoxo bis(ylide) 10 and a hexaoxo bis(ylide) 9 show these compounds to exhibit unexpected effects as regards the relative alignment of the 4-8 contiguous C=X units present. Crystal-packing forces are sufficient to over-ride the normal preference for the P=C-C=O unit in such stabilised ylides to have the syn configuration. A survey of all previous X-ray structures of acyclic oxo-stabilised phosphorus and arsenic ylides is also presented.

引用

页码：333 / 340

页数：8

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