Synthesis, structure, spectroscopic studies, and complexation of novel crown ether butadienyl dyesстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Butadienyl dyes of the benzothiazole series with various fragments of benzocrown ethers 1a-c were synthesized for the first time. The structures and spectral properties of crown-containing butadienyl dyes and their complexes with alkali and alkaline-earth metal cations were studied by X-ray diffraction analysis and H-1-NMR, UV/VIS. and resonance Raman spectroscopy, To interpret the experimental results, quantum-chemical calculations were performed, In the case of Sr2+ and Ba2+ ions, the formation of strong sandwich complexes [M(1b)(2)](2+) of an unusual structure involving stacking interactions was established the dye molecules are arranged one abode another in the complex according to the 'head-to-head' pattern.