Mixed-ligand complexes of cobalt(III) with dithiocarbamates and a cyclic tetradentate secondary amine
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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] (ClO4)(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 gt 4-morpholine-dtc gt N-methyl-piperazine-dtc.
Кључне речи:cobalt(III) / macrocycles / dithiocarbamates / synthesis / complexes
Извор:Journal of Coordination Chemistry, 1997, 41, 1-2, 19-25
- Gordon Breach Sci Publ Ltd, Reading