Browsing by Author "Gulea, A. P."

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    CRYSTAL STRUCTURE OF NITRATE tris(4-ALLYLTHIOSEMICARBAZIDE)- CHROMIUM(III) HYDRATE
    (Springer Verlag, 2016) Chumakov, Yu. M; Petrenko, P. A.; Graur, V. O.; Tsapkov, V. I.; Gulea, A. P.
    The crystal structure of nitrate tris(4-allylthiosemicarbazide)chromium(III) hydrate [CrL3](NO3)3(H2O)1.05 (I), where L is 4-allylthiosemicarbazide, is determined. The asymmetric unit of the cell of the crystal structure of I contains a complex of a chromium ion with three bidentate coordinated molecules L. The outer coordination sphere of the central atom contains a disordered water molecule and three nitrate ions. The coordination polyhedron of the chromium atom in complex I is an octahedron. In the crystal, the complexes of the compound under study are joined with each other by the outer-sphere nitrato groups into a three-dimensional branched net of hydrogen bonds.
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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.