Browsing by Author "Garbuz, O. S."

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    CRYSTAL STRUCTURES OF [N′-(2- OXIDOBENZYLIDENE)-N-(PROP-2-EN-1-YL)- CARBAMOHYDRAZONOTHIOATO(2-)](1,10- PHENANTHROLINE)COPPER AND [N′-(2- OXIDOBENZYLIDENE)-N-(PROP-2-EN-1-YL)- CARBAMOHYDRAZONOTHIOATO(2-)](2,2′- BIPYRIDINE)COPPER HEMIHYDRATES
    (2022) Chumakov, Yu. M.; Graur, V. O.; Ulchina, Ya. I.; Smaglii, V. A.; Gulea, A. P.; Garbuz, O. S.; Tsapkov, V. I.
    The crystal structures and biological properties of [N′-(2-oxidobenzylidene)-N-(prop-2-en-1-yl)-carbamohydrazonothioato(2-)](1,10-phenanthroline)copper hemihydrate [Cu(1,10-Phen)(L)]·0.5H2O (I) and [N′-(2-oxidobenzylidene)-N-(prop-2-en-1-yl)-carbamohydrazonothioato(2-)](2,2′-bipyridine)copper hemihydrate [Cu(2,2′-BPy)(L)]·0.5H2O (II), where Н2L is 2-(2-hydroxybenzylidene)-N-(prop-2-en-1-yl)hydrazinecarbothioamide, are determined. The asymmetric unit of the unit cell in the crystal structures of I and II contains a copper complex with bidentate amine and a ligand coordinated by the azomethine nitrogen atom, the deprotonated phenolic oxygen atom, and the sulfur atom in the thiol form. The coordination polyhedron of the copper atom in compounds I and II is a distorted tetragonal pyramid. Obtained coordination compounds I and II exhibit antimicrobial and antifungal activities and have minimum inhibitory concentration and bactericidal concentration values in a range of 1.5-500 µg/mL. The study of the antioxidant activity shows that compounds I and II are less active than uncoordinated thiosemicarbazone H2L, but more active than trolox used in medical practice.
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    SYNTHESIS, STRUCTURE, AND BIOLOGICAL ACTIVITY OF MIXED-LIGAND AMINE-CONTAINING COPPER(II) COORDINATION COMPOUNDS WITH 2-(2-HYDROXYBENZYLIDENE)-N-(PROP-2-EN-1-YL)HYDRAZINECARBOTHIOAMIDE
    (2021) Gulea, А. P.; Graur, V. О.; Ulchina, Ia. I.; Bourosh, P. N.; Smagliic, V. A.; Garbuz, O. S.; Tsapkov, V. I.
    Сopper(II) nitrate reacts in ethanol with 2-(2-hydroxybenzylidene)-N-(prop-2-en-1-yl)hydrazinecarbo- thioamide H2L in an 1 : 1 molar ratio to form the coordination compound Cu(HL)NO3·H 2O. The introduction of amines [imidazole (Im), 3,5-dibromopyridine (3,5-Br2Py), and 4-methylpyridine (4-Pic)] into the reaction mixture in a molar ratio 1 : 1 : 2 leads to the formation of CuA(HL)NO3·nH 2O [A = Im, 3,5-Br 2Py, 4-Pic; n = 0, 3] com- plexes. The structure of the obtained compounds was determined by X-ray structural analysis. The synthesized complexes exhibit antimicrobial, antifungal, antioxidant, and anticancer activities.