SYNTHESIS, CRYSTAL-STRUCTURE AND SPECTROSCOPIC PROPERTIES OF BIS(DIPHENYLDITHIOPHOSPHINATO)CADMIUM(II)

Reacting cadmium(II) perchlorate with the ammonium salt of diphenyldithiophosphinic acid in ethanol yielded the title compound, which crystallized in the triclinic space group P1BAR with a = 9.273(1), b = 10.426(1), c = 13.845(3) angstrom, alpha = 94.38(1), beta = 103.16(1), gamma = 104.63(1)-degrees and Z = 2. The crystal contains dimeric complexes in which two cadmium atoms and two bridging ligands form an eight-membered ring, the coordination of each metallic centre being made up to four by an additional S,S-dentate chelating diphenyldithiophosphinate ligand. Solid state vibrational spectra (IR and Raman) and multinuclear NMR spectra in DMSO solution (C-13, P-31 and Cd-113) are discussed and compared with those of aliphatic cadmium(II) dithiophosphinates.