Photo-and thermochromic spiranes 30*. Comparative study by X-ray structural analysis of the structure of spiropyrans of the indoline series containing a condensed furan fragment

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作者：
B. S. Lukyanov
A. N. Utenyshev
V. V. Tkachev
S. M. Aldoshin
V. I. Minkin
M. B. Lukyanova
Yu. S. Alekseenko
机构：
[1] Southern Federal University,Institute of Physical and Organic Chemistry
[2] Russian Academy of Sciences,Institute of Problems of Chemical Physics
[3] Chernogolovka,Southern Scientific Center
[4] Russian Academy of Sciences,undefined
来源：
Chemistry of Heterocyclic Compounds | 2008年 / 44卷
关键词：
indoline; spiropyran; condensed furan fragment; X-ray structural analysis;
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摘要：
The structure of an indoline spiropyran of molecular formula C29H33NO2 has been studied by X-ray crystallographic analysis. Structural parameters have been determined for this spiropyran, containing a condensed furan fragment with a tert-butyl group, in comparison with the structure of other spiropyrans of this series. The observation in the absorption spectrum of a photoinduced cis-cis isomer is linked with its stabilization by the steric effect of the bulky tert-butyl group and the strength of barriers at 77 K.
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页码：163 / 169
页数：6
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