Synthesis and complexation properties of photochromic benzochromenes containing aza- and diaza-18-crown-6-ether fragmentsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Complex formation of Mg2+, Ba2+, and Pb2+ perchlorates with 3,3-diphenyl-3H-benzo[f]chromenes containing aza- and diaza-18-crown-6-ether or morpholine fragments was studied. The strong influence of the metal cations on the spectral characteristics of these organic ligands and on the kinetic of photochromic transformations was found. The results obtained were explained by the formation of carbonyl-"capped" complexes of various structures.