Cis and trans platinum(ii) N-heterocyclic carbene isomers: synthesis, characterization and biological activity†
Abstract
The synthesis of cis and trans geometrical isomers of platinum(II) complexes with a symmetric N-heterocyclic carbene ligand (MeNHC) is reported. These complexes were obtained from 1,3-dimethylimidazolium-2-carboxylate, a masked NHC precursor. Their cytotoxicity, oxidative nature, and antibacterial behavior were investigated. The highest cytotoxic effect (IC50 = 1.21 μM) was observed with the cis-[Pt(MeNHC)2Cl2] complex in the cervix cancerous cell line HeLa.