Two coordination polymers called [Ni（L）2]n（1） and [Ni（2,2？-bpy）22（H2O）]n （2）（HL = 4-benzoimidazol-1-yl-methyl benzoic acid, 2,2？-bpy = 2,2＇-dipyridine） were synthesized by solvothermal reaction simultaneously and characterized by elemental analyses, thermogravimetric analysis, X-ray powder diffraction, IR spectroscopy and single-crystal X-ray diffraction analysis. Complex 1 crystallizes in monoclinic system, space group P21/c with a = 14.673（3）, b = 10.773（2）, c = 16.566（3） ？, V = 2559.2（8） A^3, Z = 4 and F（000） = 1160. 2 also crystallizes in monoclinic system, space group C2/c with a = 15.404（3）, b = 12.652（3）, c = 6.5362（13） ？, V = 1246.2（5） A^3, Z = 4 and F（000） = 712. The bridging L ligand connects the Ni^Ⅱ cations into a 2D network in complex 1, while 2 shows a 1D structure formed through the two O atoms of SO4^（2-） ions connecting the molecule. The catalytic properties indicate that complex 1 shows good catalytic activities for the cyanosilylation of 4-chlorobenzaldehyde. In addition, fluorescence property of complex 1 which quenches the excitation intensity in solid state was investigated at room temperature.
