Crystal structure and chemical properties of bis(N-picolinylidene-N′-salicyloylhydrazinato)nickel(II)

Abstract

The synthesis, spectral and magnetic properties, and X-ray crystal structure of the title complex are described. Crystals are orthorhombic, space group Aba2, with unit-cell dimensions: a= 12·61(1), b= 18·08(1), c= 10·84(1)Å, Z= 4. The structure was solved from diffractometer data by Patterson and Fourier methods and refined by least-squares techniques to R 3·5% for 1112 independent reflections. It consists of complex molecules in which the nickel atom is octahedrally co-ordinated by two ligand anions related by a two-fold axis. These anions act as terdentate ligands through a hydrazide nitrogen [Ni–N 1·991(3)Å], the pyridine nitrogen [Ni–N 2·132(4)Å], and the hydrazide oxygen [Ni–O 2·086(3)Å].