The crystal and molecular structure ofbis(hydrazine)zincbis(hydrazincarboxylate-N′,O)

Abstract

The crystal and molecular structure of bis(hydrazine)zinc bis(hydrazincarboxylate-N′,O), Zn(N₂H₄)₂(H₂N′–NH · COO)₂, has been determined. The crystal structure consists of single molecules bound to one another by hydrogen bonds. Each molecule is an octahedral chelate. The six corners of the coordination octahedron are occupied by two nitrogen atoms belonging to two hydrazine molecules and by two nitrogen atoms and two oxygen atoms, all belonging to two hydrazincarboxylic groups. The bond distances between zinc and surrounding atoms are: Zn–O = 2.05 Å, Zn–N = 2.25 Å and 2.17 Å. The distances between nitrogen atoms, in hydrazinic groups, are: N–N = 1.46 Å, for the hydrazine molecule, and 1.39 Å, for the hydrazinic group of the acid. In the group–NH · COO − the atoms C, N and both O lie in the same plane. The distances C–O = 1.30 Å and 1.25 Å correspond to those found in carboxylic acids and carboxylates.