S-33 AND O-17 NMR OF COMPOUNDS CONTAINING THE SO2 MOIETY - A GENERALIZATION OF THE CHLORINE EFFECT

被引：8

作者：

BARBARELLA, G ^{[1
]}

CHATGILIALOGLU, C ^{[1
]}

TUGNOLI, V ^{[1
]}

机构：

[1] UNIV BOLOGNA,DEPARTIMENTO BIOCHIM,I-40126 BOLOGNA,ITALY

来源：

JOURNAL OF MAGNETIC RESONANCE | 1990年 / 88卷 / 02期

关键词：

D O I：

10.1016/0022-2364(90)90184-B

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

33S and 17O chemical shifts of substrates CH3SO2Y for Y = Br, I, SeC6H4 and p-CH3C6H4SO2Y for Y = F, Cl, Br, I are reported. Evidence is provided for the existence of n → σ* conjugative interactions between the oxygen lone-pair molecular orbitals of the sulfonyl group and the vacant σ* (S-Y) MO. The trend of oxygen chemical shifts is rationalized in terms of conjugative interactions and electronegativity effects which may operate in the same or in opposite directions. © 1990.

引用

页码：277 / 283

页数：7

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