MIXED-LIGAND COMPLEXES OF COBALT(III) WITH DITHIOCARBAMATES AND A CYCLIC TETRADENTATE SECONDARY AMINE

Sofija P. Sovilj Faculty of Chemistry, University of Belgrade, P.O. Box 158, 11001, Belgrade, Yugoslavia

Gordana Vučković Faculty of Chemistry, University of Belgrade, P.O. Box 158, 11001, Belgrade, Yugoslavia

Ksenija Babić Faculty of Chemistry, University of Belgrade, P.O. Box 158, 11001, Belgrade, Yugoslavia

Tibor J. Sabo Faculty of Chemistry, University of Belgrade, P.O. Box 158, 11001, Belgrade, Yugoslavia

Slobodan Macura Mayo Clinic and Foundation, Mayo Graduate School, Department of Biochemistry and Molecular Biology, Rochester, Minnesota, 55905, U.S.A.

Nenad Juranić Mayo Clinic and Foundation, Mayo Graduate School, Department of Biochemistry and Molecular Biology, Rochester, Minnesota, 55905, U.S.A.

Abstract

4-Morpholine-, piperidine-, 4-piperazine- and N-methyl- piperazine-dithiocarbamate complexes of Cobalt (III) with 1, 4, 8, 11-tetraazacyclotetradecane, of general formula [Co(Rdtc)cyclam] (C10₄)₂, have been prepared and have been characterized. The complexes adopt cis-octahedral geometry with folded macrocyclic ligand and with the dithiocarbamate bound as a bidentate. trans-influence of the dithiocarbamate ligands was studied by NMR spectroscopy and established the order piperidine-dtc > 4-morpholine-dtc > N-methyl-piperazine-dtc.

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MIXED-LIGAND COMPLEXES OF COBALT(III) WITH DITHIOCARBAMATES AND A CYCLIC TETRADENTATE SECONDARY AMINE

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MIXED-LIGAND COMPLEXES OF COBALT(III) WITH DITHIOCARBAMATES AND A CYCLIC TETRADENTATE SECONDARY AMINE

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