Hydrazinium metal ethylenediaminetetraacetate complexes of molecular formula (N2H5)2[Mg(edta)·H2O], (N2H5)3[Mn(edta)··H2O](NO3)·H2O, N2H5[Fe(edta)·H2O], N2H5[Cu(Hedta)·H2O] and N2H5[Cd(Hedta)·H2O]·H2O have been synthesized and characterized by elemental and chemical analysis, conductivity and magnetic measurements and spectroscopic
The thermal behaviour of these complexes has been studied by thermogravimetry and differential thermal analysis. The data
set provided by the simultaneous TG-DTA curves of the complexes shows the occurrence of three or four consecutive steps such
as dehydration, ligand pyrolysis and formation of metal oxides. X-ray powder diffraction patterns of copper and cadmium complexes
show that they are not isomorphous. These studies suggest seven coordination for Mg,Mn, Fe complexes and six coordination
for Cu and Cd derivatives.