Synthesis and crystal structure of a Co(II) complex with Schiff base and imidazole ligand

The title compound, [Co(C3H4N2)(2)(C22H18N2O4)](.)5H(2)O (M-r= 659.56), has been prepared and its crystal structure was determined by X-ray diffraction method. The crystal belongs to monoclinic, space group P2(1)/n, a = 9.6808(2), b = 26.7204(5), c = 12.7993(3) angstrom, beta = 100.9340(10)degrees, V = 3250.75(12) angstrom(3), Z = 4, D, = 1.348 g/cm(3), mu = 0.586 mm(-1), F(000) = 1380, S = 1. 131, R = 0.0689 and wR = 0.1883 for 4782 observed reflections (I > 2 sigma(I)). The title crystal consists of Co(II) complex and lattice water molecules. The. Co(II) complex assumes a distorted octahedral coordination geometry, formed by one Schiff base dianion phenylenediamine-3-methoxysali-cylaldehyde and two imidazole ligands. The pi-pi stacking interaction occurs between nearly parallel benzene rings of the neighboring complexes.