Synthesis and characterization of 1,2-disubstituted vinylsilanes and their geometric differentiation with (3)J(Si-29,H-1)-coupling constants. Application of a novel heteronuclear J-resolved NMR experiment

被引：10

作者：

Bratovanov, S ^{[1
]}

Kozminski, W ^{[1
]}

Fassler, J ^{[1
]}

Molnar, Z ^{[1
]}

Nanz, D ^{[1
]}

Bienz, S ^{[1
]}

机构：

[1] UNIV ZURICH,INST ORGAN CHEM,CH-8057 ZURICH,SWITZERLAND

来源：

ORGANOMETALLICS | 1997年 / 16卷 / 14期

关键词：

D O I：

10.1021/om9701579

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The (3)J(Si-29,H-1)-coupling constants of a number of vinylsilanes have been accurately determined with the ACT-J-NMR experiment. For all investigated samples the values of the (3)J(trans)-coupling constants were found to be significantly larger than the corresponding values of the (3)J(cis)-coupling constants (8.8-20.5 Hz versus 3.1-11.9 Hz). Since substituent effects were characterized over a wide range, a conclusive assignment of the double-bond geometry of a particular vinylsilane by means of a single (3)J(Si-29,H-1)-coupling constant is now possible even though the ranges of the (3)J(cis)- and the (3)J(trans)-values overlap.

引用

页码：3128 / 3134

页数：7

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