摘要
The coordination polymer [Ni（dpa）（bpp）]n（H2dpa = 2,4＇-biphenyl-dicarboxylic acid,bpp = 1,3-di（4-pyridyl）propane） was hydrothermally prepared and characterized by single-crystal X-ray diffraction,FTIR spectra,elemental analysis and thermal analysis.The crystal is of triclinic system,space group P1 with a = 12.516（5）,b = 12.943（5）,c = 15.130（5） ,α = 94.331（5）,β = 91.827（5）,γ = 108.382（5）°,C54H44N4Ni2O8,Mr = 497.18,V = 2315.3（15） 3,Dc = 1.426 g/cm3,F（000） = 1032,μ = 0.875 cm-1,Z = 2,the final R = 0.0496 and wR = 0.1100 for 5365 reflections with Ⅰ 〉 2σ（Ⅰ）.X-ray diffraction analysis reveals that the carboxylate group of 2,4＇-diphenic acids acting as bridging ligands adopts two coordination modes：bis-mondentate and bidentate chelating.The compound exhibits a two-dimensional（6,3）-connected architecture.
The coordination polymer [Ni（dpa）（bpp）]n（H2dpa = 2,4＇-biphenyl-dicarboxylic acid,bpp = 1,3-di（4-pyridyl）propane） was hydrothermally prepared and characterized by single-crystal X-ray diffraction,FTIR spectra,elemental analysis and thermal analysis.The crystal is of triclinic system,space group P1 with a = 12.516（5）,b = 12.943（5）,c = 15.130（5） ,α = 94.331（5）,β = 91.827（5）,γ = 108.382（5）°,C54H44N4Ni2O8,Mr = 497.18,V = 2315.3（15） 3,Dc = 1.426 g/cm3,F（000） = 1032,μ = 0.875 cm-1,Z = 2,the final R = 0.0496 and wR = 0.1100 for 5365 reflections with Ⅰ 〉 2σ（Ⅰ）.X-ray diffraction analysis reveals that the carboxylate group of 2,4＇-diphenic acids acting as bridging ligands adopts two coordination modes：bis-mondentate and bidentate chelating.The compound exhibits a two-dimensional（6,3）-connected architecture.
基金
Supported by the National Natural Science Foundation of China (No. 20971018)
the project of Huangshan University (2008xkjq019)
