Crown ether styryl dyesSynthesis and complexation ofcis-isomers of photochromic dithia-15(18)-crown-5(6) ethers

被引：0
|
作者：
M. V. Alfimov
A. I. Vedernikov
S. P. Gromov
Yu. V. Fedorov
O. A. Fedorova
机构：
[1] Photochemistry Center of the Russian Academy of Sciences,
来源：
Russian Chemical Bulletin | 1997年 / 46卷
关键词：
styryl dyes; benzodithia-15(18)-crown-5(6) ethers; synthesis; photoisomerization; Hg; and Mg; ions; anion-“capped” complex; UV spectroscopy; H NMR spectroscopy;
D O I：
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中图分类号：
学科分类号：
摘要：
A novel styryl dye containing benzodithia-18-crown-6 andN-(4-sulfobutyl)benzothiazolium fragments was synthesized. The complex formation of thecis-isomers of several photochromic styryl dyes containing dithia-15(18)-crown-5(6) fragments with Hg2+ and Mg2+ ions was studied. The stability constants of the complexes with Mg2+ and the relative stability constants of the complexes with Hg2+ (with respect to benzo-1,10-dithia-18-crown-6 ether) were measured. The fact that the stability constant increases 11-fold on going from thetrans- to the correspondingcis-isomer was attributed to the formation of an anion-“capped” complex.
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页码：2099 / 2106
页数：7
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