CRYSTAL STRUCTURES OF TWO DINUCLEAR CADMIUM(II) COMPLEXES WITH SCHIFF BASES AS LIGANDS

Two new cadmium(II) complexes, Cd-2(L1)(2)(NCS)(2) (1) and Cd-2(L2)(2)(NCS)(2) (2), where L1 and L2 are the deprotonated forms of 2-[(3-dimethylaminopropylimino)methyl]-6-ethoxyphenol and 2-methoxy-6-[(pyridin-2-ylmethylimino)methyl]phenol, respectively, have been isolated as crystalline products and characterized by elemental analysis, IR spectroscopy, and single crystal X-ray diffraction method. Both compounds are structurally similar and are phenolate-O-bridged dinuclear cadmium(II) complexes. Each Cd(II) cation in the complexes is octahedrally coordinated. The Cd center dot center dot center dot Cd distances in (1) and (2) are 3.618(2) angstrom and 3.571(2) angstrom, respectively.