Synthesis,Crystal Structure,and Cytotoxic Property of Dibromobis{4-bromo-2-[（2- phenylaminoethylimino）methyl]phenolato}dizinc（II）

The title phenolic oxygen bridged dinuclear Schiff base zinc（II） complex [Zn2Br2- （C15H14BrN2O）2] was synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 9.2279（17）, b = 12.096（2）, c = 16.286（3） A, α = 75.402（3）, β = 87.464（3）, γ= 72.746（3）°, V = 1679.1（5） A^3, Z = 2, Dc = 1.833 g/cm^3, Mr = 926.94, λ（MoKα） = 0.71073 A, μ= 6.221 mm^-1, F（000） = 904, the final R = 0.0601 and wR = 0.1155. A total of 7453 unique reflections were collected, of which 3425 with I 〉 2σ（I） were observed. One Zn atom is six-coordinate in an octahedral geometry, and the other one is four-coordinate in a tetrahedral geometry. The Zn...Zn distance is 3.106（2） A. In the crystal structure, molecules are linked through intermolecular hydrogen bonds typed N-H...Br and C-H...Br, forming zigzag chains running along the b axis. The complex shows potent cytotoxic property to both normal and carcinoma cells.