Abstract
Zinc(II) complexes of the types [Zn(L)nCl2(H2O)2] and [Zn(L)nCl2]H2O [n = 1 or 2, m = 1,2 and 4 and L = acetophenone or 4-hydroxyacetophenone acylhydrazones of benzoic, isonicotinic, salicylic and 4-aminobenzoic acid hydrazides and oxalic, malonic and succinic acid dihyrazides] were synthesized and characterized by elemental analyses, dehydration studies, molar conductance, infrared. NMR and electronic spectral data and powder X-ray diffraction studies. The ligands coordinate through >C˭O and >C˭N groups to the metal ions. The water molecules are in the coordination sphere in case of the 1:1 (metaUigand) complexes and the hydrazones from the dihydrazides act as quadridentate ligands bonding through the >C˭O and >C˭N groups. The zinc complexes of acetophenone benzoyl hydrazone and acetophenone oxaloyl dihydrazone, [ZnL2Cl2·H2O, cryastallize in an orthorhombic unit lattice.
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