Nickel(II) complexes containing thiosemicarbazone ligands [Ni(L) 2 ] (1-3) (L = 9,10-phenanthrenequinonethiosemicarbazone (HL 1 ), 9,10-phenanthrenequinone-N-methylthio semicarbazone (HL 2 ) and 9, 10-phenanthrenequinone-N-phenylthiosemicarbazone (HL 3 )) have been synthesized and characterized by elemental analysis and spectroscopic (IR, UV-Vis, 1 H, 13 C-NMR and ESI mass) methods. The molecular structures of complexes 1 and 2 were identified by means of single-crystal X-ray diffraction analysis. The analysis revealed that the complexes possess a distorted octahedral geometry with the ligand coordinating in a uni-negative tridentate ONS fashion. The catalytic activity of complexes towards some C-C coupling reactions (viz., KumadaCorriu, Suzuki-Miyaura and Sonogashira) has been examined. The complexes behave as efficient catalysts in the Kumada-Corriu and Sonogashira coupling reactions rather than Suzuki-Miyaura coupling.

This work presents three mononuclear Ru(II) complexes of tridentate phosphine-carboxamide based ligands providing NNP coordination environment. The octahedral Ru(II) ion receives additional coordinations from co-ligands; CO, Cl and CH3OH. All...

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We report the unprecedented formation of ruthenium(ii) complexes containing dithiocarbazate ligand, together with their DFT and biological studies.