Synthesis,Crystal Structure and Luminescent Properties of a Nd（Ⅲ） Complex Constructed from 2-Pyridyl-4,5-imidazoledicarboxylic Acid

• 作者: CHENG Lei GUI Liu-Cheng HU Kun HUANG Fu-Ping LI Hai-Ye WEN Chang-Chun ZOU Hua-Hong
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: 晶体结构 反应合成 发光性能 构造复杂 Nd 吡啶 配位聚合物 钕离子
• 年，卷（期）: 2012,（4）
• 页码范围: 599-604
• 页数: 6页
• 分类号: O614.121|TB333
• 语种: 英文

摘要

A new Nd(Ⅲ) coordination polymer [Nd(pidc)(H2O)4]·pidc-·7H2O(1,pidc2-= 2-py-ridyl-4,5-imidazoledicarboxylate) has been synthesized by solvothermal reaction at 120 ℃ and structurally characterized.The complex belongs to triclinic,space group P with a = 9.022(2),b = 13.731(3),c = 13.782(3) ,α = 70.87(3),β = 71.71(3),γ = 71.71(3),V = 1488.6(7) 3,Z = 2,Dc = 1.798 g/cm3,S = 1.04,μ = 1.839 mm-1,F(000) = 814,Mr = 805.76,Rint = 0.081 and wR = 0.1644 for 5242 observed reflections(I 〉 2(I)).Each Nd3+ ion is nine-coordinated by five O atoms from three pidc ligands,and four O atoms from lattice water molecules.Each pidc is coordinated to three Nd3+ ions with a μ3-κO:κO':κO",κO'"-μ2 coordination mode into 1D chains,which can be further built into a 3D framework through intermolecular N-H···O and O-H···O hydrogen bonds.Photolu-minescent studies have shown that 1 exhibits emission at 439 nm(λex = 395 nm).