摘要
利用水热合成制备了一个新颖的基于柔性多羧酸配体的碱土金属配合物Sr(BuTA)0.5(H2O)2(1)(H4BuTA=1,2,3,4-丁四酸)。利用元素分析及X-射线单晶衍射对其进行了表征。结构分析结果表明标题化合物1属于单斜晶系,P21/c空间群,晶胞参数为a=0.870 03(5)nm,b=0.793 03(5)nm,c=1.268 07(5)nm,β=127.689(3)°,晶胞体积V=0.692 36(7)nm3,Z=4,Dcalc=2.290 g.cm-3,F(000)=468,μ=7.768 cm-1,R=0.015 8,wR=0.037 7。在化合物1中,每个Sr(Ⅱ)的配位环境为八配位的反四棱柱配位构型。在配合物中金属和配体互相连接形成一个三维的框架结构,其拓扑为(46)2(412.612.84)。在其结构中配体是少见的八连接点。对配合物1的热稳定性也做了测试。
A alkaline earth metal-organic complex,namely,Sr（BuTA）0.5（H2O）2（1）（H4BuTA=1,2,3,4-Butanetetra-carboxylic acid）,was obtained in water system by hydrothermal method based on flexible multi-carboxylate ligand.The title complex was characterized by elemental analysis and X-ray crystallography.The result of structural analysis shows that the complex 1 crystallizes in monoclinic,space group P21/c with a=0.870 03（5） nm,b=0.793 03（5） nm,c=1.268 07（5） nm,β=127.689（3）°,V=0.692 36（7） nm3,Z=4,Dc=2.290 g·cm-3,F（000）=468,μ=7.768 cm-1,the final R=0.015 8,wR=0.037 7.In complex 1,the coordination environment of Sr,is eight-coordinated with square antiprismatic geometry.The metal ions and ligands link each other to form a 3D framework of（46）2（412.612.84） topology,in which the BuTA2-anions act as rare 8-connected topological blocks.The thermal stability of complex 1 was also investigated.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2011年第11期2303-2307,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.20901004)资助项目
关键词
晶体结构
锶配合物
拓扑
羧酸配体
crystal structure
Sr
complex
topochemistry
carboxylate ligand
