三维配位聚合物{[La(pta)(H_2O)_2]·H_2O}_n的合成与晶体结构  

Synthesis and 3D Structure of Coordination Polymer {[La(pta)(H_2O)_2]·H_2O}_n

作　　者：王宏胜[1,2] 索海峰[1] 夏军[2] 翟滨[2] 

机构地区：[1]许昌学院化学化工学院,河南许昌461000 [2]南开大学化学学院,天津300071

出　　处：《稀土》2015年第4期62-66,共5页Chinese Rare Earths

基　　金：河南省重点科技攻关项目(132102210263)

摘　　要：在水热条件下,合成了一种La3+的三维配位聚合物{[La(pta)(H2O)2]·H2O}n(H3pta=2,4,6-吡啶三甲酸),得到该配合物的无色块状晶体,对其进行了元素分析和红外光谱测试。X射线单晶衍射分析表明,La3+与八个氧原子和一个氮原子配位。其中六个氧原子来自pta阴离子的羧基氧原子,两个来自配位水分子;氮原子来自吡啶环。该配合物的晶体属单斜晶系,P21/c空间群,晶胞参数为:a=0.68636(14)nm,b=1.1979(2)nm,c=1.3651(3)nm,α=γ=90°,β=99.65(3)°,Z=4,V=1.1065(4)nm3。Abstract： A 3D La3 ＊ coordination polymer {[La（pta）（H2O）2]·H2O}n（ 1 ） （2,4,6 - H3pta = 2,4,6 - pyridinetri- carboxylic acid） was synthesized by hydrothermal method. The colourless block crystals were obtained. Elemental analysis and infrared spectroscopy were tested, X - ray single crystal diffraction analysis showed La3 ＋ ions coordinated with eight oxygen atoms and one nitrogen atom. Two oxygen atoms were from coordintion water molecules and the other six ones from pta anions. The nitrogen atom was from the pyridyl group. It crystallized in monoclinie crystal system and P21/c space group and the crys- tallographic data for complexl： a=0.68636（14）nm,b=1.1979（2）nm,c=1.3651（3）nm,α=γ=90°,β=99.65（3）°,Z=4,V=1.1065（4）nm3.

关 键 词：配位聚合物 镧 水热合成 晶体结构 2 4 6-吡啶三甲酸 

分 类 号：O614.331[理学—无机化学] O611.2[理学—化学]