Syntheses, characterizations and structures of cadmium(II) and zinc(II) pseudohalide complexes containing pyridylpyrazole ligand

The details of syntheses, characterizations and structures of cadmium(II) and zinc(II) pseudohalide complexes of the types [M(L)(NCS)(2)], [M(L)(N-3)]PF6, [Zn(L)(NCO)]PF6 and [Cd(L)(NCO)(2)](PF6)(2) (1-6) [M = Cd-II and Zn-II; L = N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)aminomethylpyridine] are described. All the complexes are characterized using their spectroscopic and other physicochemical results. Crystal structures of [Cd(L)(NCO)](2)(PF6)(2) (3) and [Zn(L)(N-3)]PF6 (5) have been solved by single crystal X-ray diffraction measurements. Each metal center in binuclear compound 3 has double NCO- bridged distorted octahedral structure whereas in mononuclear compound 5 adopts a distorted trigonal bipyramidal geometry.