Synthesis and Crystal Structure of One Mixed- ligand Coordination Polymer Based on the Novel Terphenyl-2,5,2＇,5＇-tetracarboxylic Acid Ligand

• 作者: FAN Li-Ming WEI Pei-Hai ZHANG Liang-Dong ZHANG Lu-Qing ZHANG Shu-Xiang ZHANG Xiu-Tang
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: 配位聚合物 晶体结构 混合配体 三联苯 四乙酸 X-射线衍射分析 过渡金属阳离子 基础
• 年，卷（期）: 2012,（10）
• 页码范围: 1518-1523
• 页数: 6页
• 分类号: O614.121|O625.13
• 语种: 英文

摘要

Solvothermal reaction of aromatic terphenyl-2,5,2',5'-tetracarboxylic acid (Hnqptc) ligand and the transitional metal cation of Mn11 in the presence of 3-(2-pyridyl)pyrazole (pp) affords one new coordination polymer, [Mn(qptc)0.5(pp)2]n·n(H2O) (1). The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR, TGA, and magnetism. The carboxyl groups of qptc4 exhibit a μ1-η1:η0 coordination mode, and the qptc4- acts as a H-shaped ligand linking the Mn11 centers together to form a 2D polymeric [Mn(qptc)0.5]n layer. The crystal of 1 crystallizes in orthorhombic, space group Pbca with a = 9.3119(12), b = 20.848(3), c = 26.134(3) A, V= 5073.4(11) A3, Z= 8, C27HIgMnN6O5,Mr=562.42, Dc = 1.473 g/cm3, F(000) = 2304 and μ(MoKa) = 0.571 mm-1. The final R = 0.0468 and wR = 0.1196 for 4429 observed reflections with I 〉 2σ(I) and R = 0.0797 and wR = 0.1383 for all data.