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ISSN electronic edition: 1336-9075
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Cis-Palladium(II) complex incorporating 3-(2-pyridyl)-5-methyl-1,2,4-triazole: structure and cytotoxic activity

Borys V. Zakharchenko, Dmytro M. Khomenko, Roman O. Doroschuk, Ilona V. Raspertova, Sergiu Shova, Anna G. Grebinyk, Iryna I. Grynyuk, Svitlana V. Prylutska, Olga P. Matyshevska, Mykola S. Slobodyanik, Marcus Frohme, and Rostislav D. Lampeka

Taras Shevchenko National University of Kyiv, Kiev, Ukraine



Received: 27 January 2021  Accepted: 12 May 2021


The structure of complex cis-Pd(HLMe)Cl2 was studied both in solution and in solid state using multinuclear (1H, 13C, 15N) NMR spectroscopy and X-ray structural analysis. Complex was evaluated for cytotoxic activity. Thus, the results showed that cis-Pd(HLMe)Cl2 has a pronounced cytotoxicity toward human leukemic lymphoblast’s CCRF-CEM and cervix adenocarcinoma HeLa cells. Moreover, it was found that cis-Pd(HLMe)Cl2 is more toxic than cisplatin: its IC50 value at 24 h incubation was lower by more than an order for CCRF-CEM cells and by three orders for HeLa cells as compared with cisplatin IC50. Depending on the concentration, cis-Pd(HLMe)Cl2 is accelerated or slowed hemolysis of erythrocytes. Observed differential biological effects of cis-Pd(HLMe)Cl2 suggest the dependence of the agent’s interactions with cells on the molecular structure of palladium ligand and the cell type.

Keywords: Palladium; 1,2,4-Triazole; NMR spectroscopy; Cytotoxicity; Cancer cells; Hemolysis of erythrocytes

Full paper is available at

DOI: 10.1007/s11696-021-01699-4


Chemical Papers 75 (9) 4899–4906 (2021)

Tuesday, June 18, 2024

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