Molybdotellurates [M(H2O)6]3[TeMo6O24], with M=Ni(II) and Co(II), were synthesized and characterized by single-crystal X-ray diffraction for compound 1 and X-ray
powder diffraction for compound 2, EDAX, IR, electronic spectra in the solid phase and in solution, and magnetic properties.
Thermogravimetry and differential scanning calorimetry of both compounds revealed a loss of 11 water molecules through an
endothermal process with ΔH=800 kJ mol−1 for the nickel compound and ΔH=833 kJ mol−1 for the cobalt compound. The residual compounds were characterized by chemical analysis, IR and XPS spectroscopy