人工晶体学报2017，Vol.46Issue(1)：168-173,6.
两种吡啶多羧酸与稀土Eu（III）配合物的结构与光致发光性质
Structure and Photoluminescence Properties of a Eu(III) Complex with Two Ligands of Mixed Pyridinecarboxylic Acid
摘要
Abstract
A 3D europium coordination polymer {[Eu2(2,4,6-Hptc)( 3,5-pdc)2(H2O)8]·6H2O}n(1) (2, 4, 6-H3 ptc = 2, 4, 6-pyridinetricarboxylic acid;3, 5-H2 pdc = 3, 5-pyridinedicarboxylic acid ) was synthesized by hydrothermal method using europium perchlorate reacting with 3,5-pyridinedicarboxylic acid and 2,4,6-pyridinetricarboxylic acid. X-ray diffraction analysis of single crystal shows that the complex is crystallized in monoclinic system, C2/c space group. The cell parameters are as follows a=2. 0106(11) nm,b=1. 1048(6) nm,c=1. 7591(10) nm,β = 112. 117(8) °,α = γ = 90°. Eu3+ ions in the complex is coordinated with nine oxygen atoms. Five O atmos are from the carboxylate of lignds and the other four O atoms are from coordination water molecules. They are formed a distorted tricapped trigonal prism. The two carboxylates of each 3,5-pdc anion coordinates with Eu3+ by chelating way and a 1D chain structure is formed. 2,4,6-Hptc anions coordinate with Eu3+ by the 2-and 4-carboxylates. The 4-carboxylate does not coordinate. The 1D chain structres formed with 3,5-pdc anions and Eu3+ are further connected by 2,4,6-Hptc anions and 1D ladder shaped structure are constructed. The complex exhibits intense characteristic luminescence of Eu3+ with excitation of UV-rays.关键词
3 ,5-吡啶二甲酸/2 ,4 ,6-吡啶三甲酸/铕/配位聚合物/晶体结构/光致发光Key words
3 , 5-pyridinedicarboxylic acid/2 , 4 , 6-pyridinetricarboxylic acid/europium/coordination polymer/crystal structure/photoluminescence分类
化学化工引用本文复制引用
王宏胜,李公春,张万强,陈新华..两种吡啶多羧酸与稀土Eu（III）配合物的结构与光致发光性质[J].人工晶体学报,2017,46(1):168-173,6.基金项目
南开大学教育部先进能源与材料重点实验室开放基金项目(2015) （2015）
河南省高等学校重点科研项目(16A150062) （16A150062）
河南省许昌市科技发展计划项目(1504009) （1504009）
