N-15 NMR OF NITRANIONS - OPPOSITE SHIFT EFFECTS OF SIGMA-CHARGE AND PI-CHARGE

被引：15

作者：

BARCHIESI, E ^{[1
]}

BRADAMANTE, S ^{[1
]}

机构：

[1] UNIV MILAN,CNR,CTR SPECIALI SIST ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY

来源：

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY | 1990年 / 3卷 / 03期

关键词：

D O I：

10.1002/poc.610030302

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Nitranions of pyrrole, aromatic and heteroaromatic amines, carboxamides and pyridyl carbanions are generated by deprotonation either of NH or CH acids. The positive or negative displacements undergone by the 15N nucleus relative to the neutral precursor depend on whether a σ or π charge is increased. They are associated with the symmetry of the nitrogen orbital in which the electron pair is either generated or that to which it is delocalized. Copyright © 1990 John Wiley & Sons Ltd.

引用

页码：139 / 142

页数：4

共 43 条

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