tert-Butyl-End-Capped Polyynes: Crystallographic Evidence of Reduced Bond-Length Alternation

被引：86

作者：

Chalifoux, Wesley A.

McDonald, Robert ^{[1
]}

Ferguson, Michael J. ^{[1
]}

Tykwinski, Rik R.

机构：

[1] Univ Alberta, Dept Chem, X Ray Crystallog Lab, Edmonton, AB T6G 2G2, Canada

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 42期

基金：

加拿大自然科学与工程研究理事会;

关键词：

alkynes; carbynes; coupling reactions; polyynes; structure elucidation; SP-CARBON CHAINS; ACETYLENIC-COMPOUNDS; OPTICAL-PROPERTIES; PROTECTIVE METHOD; TERMINAL ALKYNES; SILYLATION; RESEARCHES; OLIGOYNES; EFFICIENT; CHEMISTRY;

D O I：

10.1002/anie.200902760

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cumulene or polyyne? The synthesis and X-ray crystallographic analysis of a series of polyynes up to 20 Csp atoms in length and end-capped with tert-butyl groups has been achieved. The structural data show a distinct reduction in the bondlength alternation as a function of the polyyne length, but this trend appears to saturate before a cumulenic-like structure is achieved. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

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页码：7915 / 7919

页数：5

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