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 SM ISO690:2012SAMUSI, Nina, TSAPKOV, Victor I., GULYA, Aurelian. Coordination compounds of copper(II), nickel(II), and cobalt(II) with β-thiosemicarbazones of isatin and N-methylisatin. In: Russian Journal of General Chemistry, 2004, vol. 74, pp. 1428-1432. ISSN 1070-3632. DOI: https://doi.org/10.1007/s11176-005-0026-3 |
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  Russian Journal of General Chemistry |
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| Volumul 74 / 2004 / ISSN 1070-3632 /ISSNe 1608-3350 | ||||||
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| DOI:https://doi.org/10.1007/s11176-005-0026-3 | ||||||
| Pag. 1428-1432 | ||||||
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Isatin thiosemicarbazone (HL) reacts in aquoeus-ethanolic medium with copper(II) chloride and bromide (pH 7-7.5, ethanolic KOH) to give coordination compounds CuLX·nH2O (X = Cl, Br; n = 3, 4). In the presence of amines (A = C5H5N, 3-CH3C5H 4N, and 4-CH3C5H4N), complexes CuALX·2H2O and CuA2LX·H2O (X = Cl, Br) are formed. With nickel(II) or cobalt(II) chlorides, thiosemicarbazone HL, and pyridine (1:1:3) as starting compounds, compounds MPy 2LCl·H2O (M = Ni, Co) are isolated. Under similar conditions, N-methylisatin β-thiosemicarbazone (HL') reacts with chlorides of the above-noted metals in the presence of pyridine to give complexes MPy 2L'Cl·H2O (M = Cu, Ni, Co). All the complexes are monomeric and have a pseudooctahedral structure of the coordination unit. Thiosemicarbazones HL and HL1 in these complexes behave as tridentate monodeprotonated O,N,S-ligands. Thermolysis of these substances passes through the stages of dehydration (60-90°C), deaquation (135-140°C) or deamination (160-215°C), and complete thermal decomposition (560-670°C). |
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