CADMIUM-MOLYBDENUM COMPLEXES OF DITHIOCARBAMATES AND 8-QUINOLINOL

The heterobinuclear complexes [CdMoO2(L)3(H2O)] (L = diethyldithiocarbamate, 4-morpholinyldithiocarbamate, 1-piperidenylthiocarbamate or 8-quinolinol) were prepared by the interaction of cadmium(II) molybdate with the respective ligands in dimethylformamide. The magnetic moment, EPR and PES spectral studies suggested the presence of molybdenum in the pentavalent state. The IR spectral bands suggested the presence of Mo = O (920 cm-1) and Cd-O-Mo (780 cm-1) and bidentate dithiocarbamate ligands in the molecule. The IR, PES and thermal decomposition studies confirmed the presence of a coordinated water molecule. The H-1 and C-13 NMR chemical shifts indicated van der Wall's interactions between a set of protons coming closer due to the proximity of the dithiocarbamate ligands coordinated to the heterometal atoms. The proposed structure consists of a tetrahedral cadmium(II) and octahedral molybdenum(V) bridged by an oxo group.