Synthesis, X-Ray Structural Characterization, and Catalytic Property of a Manganese (II) Complex With 2-Bromo-6-[(3-cyclohexylammoniopropylimino)methyl]phenolate and Thiocyanate Ligands

A new manganese(II) complex [MnL2(NCS)(2)]center dot 2H(2)O with the Schiff base ligand derived from 3-bromosalicylaldehyde with N-cyclohexylpropane-1,3-diamine has been synthesized and structurally characterized by physicochemical methods and single-crystal X-ray determination. The crystal of the complex crystallizes in monoclinic space group C2/c, with a = 24.749(2), b = 7.2957(7), c = 26.183(4) angstrom, beta = 118.70(2)degrees, V = 4171.6(8) angstrom(3), Z = 4, R (1) = 0.0893, wR (2) = 0.2305, GOOF = 1.084. X-ray analysis indicates that the complex is a mononuclear manganese species, which possesses crystallographic inversion center symmetry. The Mn atom, lying on the inversion center, is coordinated in an octahedral coordination by two phenolate O and two imine N atoms from two Schiff base ligands, and two thiocyanate N atoms. The catalytic property for epoxidation of styrene by the complex has also been tested.