Supramolecular aggregation of sandwich double-decker lanthanum complexes with tetra-15-crown-5-phthalocyanineстатья
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Дата последнего поиска статьи во внешних источниках: 7 декабря 2017 г.
Аннотация:The reactions of the neutral radical [(R4Pc2-)La 3+(R4Pc-.)]0 and anionic [La 3+(R4Pc2-)2]- forms (R4Pc2- is 4,5,4′,5′,4″,5″, 4‴,5‴-tetrakis(1,4,7,10,13-pentaoxatridecamethylene) phthalocyaninate ion) of sandwich double-decker lanthanum tetra-15-crown-5- phthalocyaninate with alkali-metal thiocyanates and their behavior in solutions were studied. To confirm the composition and structure of the resulting supramolecular aggregates, the curves of titration of the complexes by alkali-metal thiocyanate solutions were obtained using UV and visible electronic absorption spectroscopy. The interaction of [La3+(R 4Pc2-)2]- with K+, Rb+, and Cs+ was found to be accompanied by the nonlinear positive cooperative effect.