摘要
常温水溶液中用1H-1,2,4-三唑-3,5-二羧酸(H3adctrz)与醋酸锌反应得到配位聚合物1H-1,2,4-三唑-3,5-二羧酸锌[Zn(Hadctrz)(H2O)3)]n,单晶经同步辐射光源衍射分析、元素分析、红外光谱进行了表征。晶体结构分析给出该配合物结晶为单斜晶系为14号空间群P21/c,其中Zn离子与氧、氮原子采取扭曲的八面体构型,价键总和(BVS)计算锌的氧化态是+2,相邻的锌离子通过μ1,4-Hadctrz桥联形成一维"之"字型结构,链间通过分子间氢键作用扩展为二维网状结构。锌离子配位使1H-1,2,4-三唑-3,5-二羧酸在DMSO溶液中的荧光淬灭。
One dimension complex [ Zn （ Hdctrz ） H2O]., （ H3 dctrz, 1 H-1, 2,4 -triazole-3,5-dicarboxylic acid ） has been synthesized under room temperature and characterized by Synchrotron Radiation Facility（ SRF）, elemental analysis, IR. Crystal structural analysis reveals that the complex crystallizes in monoclinic system with space group P21/c. Centre zinc ion displays a slightly distorted octahedral geometry. Bond valence sum（BVS） model calculation is also performed to assign the oxidation number of the zinc center. The adjacent Zn cations are linked by a pq.4-Hadctrz forming one dimensional zigzag chains, Further,these 1D chains form 2D networks by intermoleeular hydrogen bends. The fluorescence spectra of the ligands and complex 1 in DMSO show the addition of zinc can result in fluorescence quenching of ligands.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2013年第12期1674-1679,共6页
Chemical Research and Application
基金
国家自然科学基金(21271121)
高等学校博士点学科点专项科研基金博导类(20111401110002)
山西省回国留学人员科研资助项目(2013-026)
