Syntheses and Crystal Structures of Zinc(II) Complexes with Two Kinds of Benzoate Derivatives

Two novel zinc(II) complexes of [Zn(L1)2(phen)]_5H2O 1 (L1 = 4-aminobenzoic acid, phen = 1,10-phenanthroline) and [Zn(L2)2(en)] 2 (L2 = 4-methoxybenzoic acid, en = ethylenediamine) have been prepared and characterized by X-ray single crystal structural analysis. Complex 1 crystallizes in the tetragonal system, space group I41/a. The zinc atom of the central ZnO3N2 system is pentahedral coordinated by two N atoms of phen and three O atoms of 4-aminobenzoic acid. Complex 2 belongs to orthorhombic system, space group Pbcn. The zinc atom of the central ZnO2N2 system lies on a twofold symmetry axis and is tetrahedrally coordinated by two N atoms of en and two O atoms of 4-methoxybenzoic acid.