Cytotoxic Copper(II) Complexes Based on 2,2'-Bipyridine/1,10-
Phenanthroline and 5-(4-Chlorophenyl)-1H-tetrazole:
Synthesis and Structures

Yu. A. Golubeva; Голубева Ю. А.; K. S. Smirnova; Смирнова К. С.; L. S. Klyushova; Клюшова Л. С.; A. S. Berezin; Березин А. С.; E. V. Lider; Лидер Е. В.

doi:10.31857/S0132344X2260062X

Cytotoxic Copper(II) Complexes Based on 2,2'-Bipyridine/1,10- Phenanthroline and 5-(4-Chlorophenyl)-1H-tetrazole: Synthesis and Structures

Authors: Golubeva Y.A.¹, Smirnova K.S.¹, Klyushova L.S.², Berezin A.S.¹, Lider E.V.¹
Affiliations:
1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2. Research Institute of Molecular Biology and Biophysics, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
Issue: Vol 49, No 9 (2023)
Pages: 516-529
Section: Articles
URL: https://journal-vniispk.ru/0132-344X/article/view/137305
DOI: https://doi.org/10.31857/S0132344X2260062X
EDN: https://elibrary.ru/WACYDM
ID: 137305

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Abstract
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Abstract

Five coordination compounds [Cu2(Bipy)2L4]·C2H5OH (Iа, Ib), [Cu2(Dmbipy)2L4] (II),
[Cu2(Phen)2L4]·H2O (IIIa), [Cu2(Dmphen)2L4] (IVa), and [Cu2(Phendione’)2L4]·2C2H5OH·2H2O (V) are
synthesized from 5-(4-chlorophenyl)-1H-tetrazole (HL), where Bipy is 2,2'-bipyridine, Dmbipy is 4,4'-
dimethyl-2,2'-bipyridine, Phen is 1,10-phenanthroline, Dmphen is 4,7-dimethyl-1,10-phenanthroline, and
Phendione’ is 6-ethoxy-6-hydroxy-1,10-phenanthrolin-5-one. The crystal structures of the complexes are
determined by X-ray diffraction (XRD) of single crystals (CIF files CCDC nos. 2225368 (Ia), 2225369 (Ib),
2225370 (II), 2225372 (IIIa), 2225373 (IVa), and 2225371 (V)). The compounds are binuclear due to the
bridging function of the tetrazolate anion, and the coordination number of copper is five in all synthesized
complexes. The cytotoxic activity of the complexes against the Hep2 and HepG2 cancer cell lines and noncancerous
human fibroblasts MRC-5 is studied. The complexes exhibit pronounced cytotoxic properties, and
compound V has the maximum selectivity index with respect to the cancer cells.

Keywords

copper(II) complexes, 5-(4-chlorophenyl)-1H-tetrazole, 1,10-phenanthroline, XRD, cytotoxicity

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