Ditopic pyridyl-benzothiazole – pyridylmethylene-2-thiohydantoin conjugates: synthesis and study in complexation with CuCl2статья
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Дата последнего поиска статьи во внешних источниках: 18 мая 2022 г.
Аннотация:New ditopic ligands (L) consisting of 2-(2-pyridyl)benzothiazole and 5-pyridylmethylene-2-thioimidazol-4-one moieties linked with polymethylene chains of various lengths (compounds 4) or triazole-containing linker (compounds 9, 11) were synthesized and their coordination properties in the reactions with CuCl2 were investigated. All the obtained copper complexes had the LCuCl2 composition. Ligands 4 with polymethylene linkers coordinate CuCl2 initially at the 5-pyridylmethylene-2-thioimidazolone moiety, but then copper chloride migrates to the 2-pyridylbenzothiazole fragment. In contrast, ligands 9, 11 with the triazole-containing linkers coordinate CuCl2 at 5-pyridylmethylene-2-thio-imidazolone and triazole fragments, and then the structure of the complex in the solution does not change. In DMF, the initially formed Cu2+ complexes may be reduced to Cu1+ compounds, based on electrochemical investigation data.