Transition metal complexes of phenylacetates and substituted phenyacetates with neutral hydrazine as a ligand.

ABSTRACT

Some hydrazine carboxylates of the type Co(PhAc)2(N2H4)2 , where M = Co, Ni, Cd and Mn , M(Di-PhAc)21.5N2H4.H2O, M = Co, Ni and Cd, M(2,4 di-Cl PhAc)21.5N2H4.H2O where M = Co, Ni and Cd, have been prepared and studied. The compositions of the complexes have been determined by chemical analyses. The electronic spectra suggest the octahedral geometry for the metal complexes. The IR absorption bands of N-N stretching in the range 958 – 975 cm-1 unambiguously prove the bidentate bridging nature of the N2H4 ligand. All prepared complexes undergo two, three or multi step decomposition and the final products are found to be the respective metal oxide, metal carbonate, metal of mixture of metal oxide and metal carbonate or metal as indicated by thermal analysis. In order to know the isomorphous nature among the complexes the X–ray patterns have been compared.