Abstract
Two isostructural cadmium(II) complexes, [Cd(L1)(NO 3 ) 2 (H 2 O)] · CH 3 OH (1) and [Cd(L2)(NO 3 ) 2 (H 2 O)] · CH 3 OH (2), derived from the Schiff bases 4-bromo-2-[(2-piperazinylethylimino)methyl]phenol (L1) and 4-chloro-2-[(2-piperazinylethylimino)methyl]phenol (L2), respectively, were prepared and structurally characterized by X-ray diffraction. Each complex consists of a mononuclear cadmium(II) complex molecule and a methanol molecule of crystallization. The Cd atom in each complex is six-coordinated by one phenolate O, one imine N and one amine N atoms of the Schiff base ligand, two O atoms from two nitrate anions, and one water O atom, forming distorted octahedral coordination. The urease inhibitory activities of the complexes were evaluated.
This work was financially supported by the Natural Science Foundation of Huaihai Institute of Technology (Z2008022), and by the Education Office of Liaoning Province (Project No. 2007T092).