Abstract
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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For Part 22, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2213–2220, December, 1997.
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Alfimov, M.V., Vedernikov, A.I., Gromov, S.P. et al. Crown ether styryl dyes. Russ Chem Bull 46, 2099–2106 (1997). https://doi.org/10.1007/BF02495260
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DOI: https://doi.org/10.1007/BF02495260