TRICOORDINATE HYPERVALENT 3-MEMBERED THIAHETEROCYCLES

被引：3
|
作者：
ZOLLER, U
机构：
[1] Haifa University-Oranim, Division of Chemical Studies, Kiryat Tivon 36910, P. O.
来源：
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 1991年 / 58卷 / 1-4期
关键词：
D O I：
10.1080/10426509108040635
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Tricoordinate hypervalent three-membered thiaheterocyclic intermediates of type 1 connect the starting zwitterionic imidazolium sulfinates 2, thiourea dioxides 3 and phosphine sulfide-S-dioxides 4 with the corresponding products of their thermal fragmentation, imidazolium thione 5, thioureas 6 and phosphine sulfides 7, on the reaction surface. The relative thermodynamic stability of these hypervalent, significantly ionic σ-bonding systems, explain their observed characteristic mode of thermally-allowed non-linear cheletropic fragmentation. © 1991, Taylor and Francis Group, LLC. All rights reserved.
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页码：275 / 279
页数：5
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