Mixed Chelate and Ternary Complexes of Nickel(II)

Department of Chemistry, Regional Engineering College, Rourkela-769 008 Manuscript received 16 December 1985, revised 2 September 1986, accepted 30 October 1986 A series of complexes of the type Ni(AA') (BB'), Ni(AA') (BB')L and Ni(AA') (BB')L,, where AA'=diethyldithio-carbamate (et2dtc) ; BB'=acetylacetonate (acac), 8-hydroxy-quinolinate (ox), dimethylglyoximate (ding), pyridinecarboxylate (pyca) ; and L =water or pyridine-N-oxide (pyNO), have been isolated by the reaction of nickel(II) salts with suitable ligands in stoichiometric ratio. The compounds were characterised on the basis of their analyses, molecular weight, molar conductance, magnetic susceptibility, infrared and electronic spectral data. Compounds having com­position Ni(AA')(BB') were found to be tetracoordinated, Ni(AA')(BB')L pentacoordi­nated and Ni(AA')(BB')L2 hexacoordinated