Hydrazine mixed metal malonates - New precursors for metal cobaltites

Hydrazinium mixed metal malonate dihydrates and bis-hydrazine mixed metal malonates of the molecular formulae (N2H5)(2)[M(1/3)Co(2/3)(OOCCH2COO)(2) (H2O)(2)] and [M(1/3) Co-2/3(OOCCH2COO)(N2H4)(2)] respectively, where M = Mg, Mn, Ni, Zn or Cd have been prepared and characterized by chemical analyses, infrared spectroscopy, thermal analyses and X-ray powder diffraction. The metal cobaltites, MCo(2)O(4) where M = Mg, Mn, Ni, Zn or Cd were obtained from the above complexes as decomposition residues by heating these complexes in a pre-heated silica crucible at 500 degrees C for about fifteen minutes. The final residues were confirmed by analytical data, infrared spectra and X-ray powder diffraction patterns.