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
收藏
页码：2099 / 2106
页数：8
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