Abstract
The dihydrazinium ethylenediaminetetraacetate, (N2H5)2 (H2edta) reacts with metal nitrates to form complexes of the type, N2H5[M(Hedta)˙H2O], where M = Co(II), Ni (II), Cu(II) or Zn (II). These complexes were characterised by analytical data, conductivity and magnetic susceptibility measurements, electronic and infrared spectroscopy and thermal analyses. The complexes are 1:1 electrolytes in aqueous solution.