Coordination Compounds of Cobalt(II), Nickel(II), and Copper(II) Halides with 2-Methyl-1,2,4-Triazolo[1,5-a]benzimidazole

New coordination compounds of Co(II), Ni(II), and Cu(II) halides with 2-methyl-1,2,4-triazolo[1,5-a]benzimidazole (L), [Co(L) 2 Cl 2 ] ( Ia ), [Ni(L) 2 (H 2 O) 4 ]Cl 2 · 4H 2 O ( II ), and [Сu 2 (L) 4 (µ-Br) 2 Br 2 ] ( IIIa ), are synthesized. The complexes are studied by X-ray structure analysis (С...

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Bibliographic Details
Published in:Russian journal of coordination chemistry 2018-12, Vol.44 (12), p.755-764
Main Authors: Dyukova, I. I., Kuz’menko, T. A., Komarov, V. Yu, Sukhikh, T. S., Vorontsova, E. V., Lavrenova, L. G.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Cobalt compounds
Coordination compounds
Copper
Copper compounds
Diffuse reflectance spectroscopy
Halides
Infrared spectroscopy
Inorganic Chemistry
Ligands
Nickel
Physical Chemistry
Spectrum analysis
Structural analysis
Synthesis
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Summary:New coordination compounds of Co(II), Ni(II), and Cu(II) halides with 2-methyl-1,2,4-triazolo[1,5-a]benzimidazole (L), [Co(L) 2 Cl 2 ] ( Ia ), [Ni(L) 2 (H 2 O) 4 ]Cl 2 · 4H 2 O ( II ), and [Сu 2 (L) 4 (µ-Br) 2 Br 2 ] ( IIIa ), are synthesized. The complexes are studied by X-ray structure analysis (СIF files CCDC nos. 1825006–1825008), electronic (diffuse reflectance) spectroscopy, and IR spectroscopy. In compounds Ia , II , and IIIa , ligand L is coordinated to the metal by the N 4 atom of the triazole fragment. The study of the cytotoxic effect of the ligand and synthesized complexes on the Hep-2 line (laryngeal cancer cells) shows a considerably higher activity of the copper(II) complex than that of the ligand.
ISSN:1070-3284
1608-3318
DOI:10.1134/S107032841812014X