STUDY OF THE NATURE OF THE LONG-RANGE EFFECT OF THE LONE PAIR OF THE HETEROATOM ON THE DIRECT C-13-H-1 SPIN-SPIN COUPLING-CONSTANTS IN N-VINYL DERIVATIVES OF HETEROCYCLES BY THE AM-1 METHOD

被引：3

作者：

AFONIN, AV

VASHCHENKO, AV

DANOVICH, DK

机构：

[1] Irkutsk Institute of Organic Chemistry, Academy of Sciences of the USSR, Siberian Branch

来源：

BULLETIN OF THE ACADEMY OF SCIENCES OF THE USSR DIVISION OF CHEMICAL SCIENCE | 1991年 / 40卷 / 03期

关键词：

D O I：

10.1007/BF00957984

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The main reason for the increase in a direct C-13-H-1 spin-spin coupling constant upon the spatial approach of the respective hydrogen atom and a heteroatom separated by several bonds is the increase in the s order of the C-H bond. The length of the C-H bond, however, remains practically unchanged.

引用

页码：503 / 510

页数：8

共 16 条

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