Crown ether styryl dyes - 23. Synthesis and complexation of cis-isomers of photochromic dithia-15(18)-crown-5(6) ethers

被引：10

作者：

Alfimov, MV ^{[1
]}

Vedernikov, AI ^{[1
]}

Gromov, SP ^{[1
]}

Fedorov, YV ^{[1
]}

Fedorova, OA ^{[1
]}

机构：

[1] Russian Acad Sci, Photochem Ctr, Moscow 117421, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 1997年 / 46卷 / 12期

关键词：

styryl dyes; benzodithia-15(18)-crown-5(6) ethers; synthesis; photoisomerization; Hg2+ and Mg2+ ions; anion-"capped" complex; UV spectroscopy; H-1 NMR spectroscopy;

D O I：

10.1007/BF02495260

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel styryl dye containing benzodithia-18-crown-6 and N-(4-sulfobutyl)benzothiazolium fragments was synthesized. The complex formation of the cis-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 the trans- to the corresponding cis-isomer was attributed to the formation of an anion-"capped" complex.

引用

页码：2099 / 2106

页数：8

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