Cadmium（Ⅱ） Nitrite Complex Based on the Bis（2-benzimidazole） and Aromatic Carboxylate Ligands

• 作者: CHEN Qiang FENG Guo-Dong JIANG Luan LI Zong-Xiao LUO Xiao-Lin YANG De-Suo
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: 亚硝酸盐 苯并咪唑 羧酸配合物 X-射线衍射分析 超分子结构 镉 芳香 BDC
• 年，卷（期）: 2012,（4）
• 页码范围: 529-534
• 页数: 6页
• 分类号: O626.23|TS251.7
• 语种: 英文

摘要

A new cadmium(Ⅱ) nitrite complex Cd2(H2C3PIm)2(BDC)(NO2)2(1,H2C3PIm = 2,2'-(1,3-propanediyl)bis(1H-benzimidazole),H2BDC = 1,4-benzenedicarboxylic acid) has been synthesized by solvothermal reaction in formamide,and its structure(C42H36Cd2N10O8,Mr = 1033.61) was determined by single-crystal X-ray diffraction analysis.The crystal belongs to the monoclinic system,space group P21/n with a = 0.9859(5),b = 0.8936(5),c = 2.3188(5) nm,β = 97.576(5)°,V = 2.025(16) nm3,Z = 2,Dc = 1.695 g/cm3,μ(MoKα) = 1.118 mm-1,F(000) = 1036,S = 1.017,the final R = 0.0304 and wR = 0.0752 for 3761 reflections with I 〉 2σ(I).The centrosymmetric complex 1 contains a dimer in which two distorted octahedral Cd(II) centers are bridged by BDC ligand and chelated by H2C3PIm.The units of the complex are linked via weak N-H···O hydrogen bonds between the nitrito and the BDC ligands,leading to the formation of a 1D zigzag chain along the b axis.The π-π packing interactions contribute to the formation of a three-dimensional supramolecular architecture.The complex exhibits strong photoluminescence at room temperature.