基于3,4-吡啶二羧酸的二维层状聚合物的合成和晶体结构(英文)  

Synthesis and Crystal Structure of 2D Layer Lanthanum Polymer Constructed from Pyridine-3,4-dicarboxylate Ligand

作　　者：梁青[1] 宋会花[1] 

机构地区：[1]河北师范大学化学化学与材料科学学院,石家庄050016

出　　处：《无机化学学报》2009年第8期1487-1491,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20601007,50472020,20773034);河北省自然科学基金(No.B2008000143);河北省教育厅自然科学基金(No.ZH2006002);河北师范大学博士基金(No.103261)资助项目

摘　　要：A metal-organic coordination polymer {[La(PDC)(N-HPDC)].H2O}n (1) (H2PDC=pyridine-3,4-dicarboxylic acid) has been hydrothermally synthesized and structurally characterized by X-ray diffraction single-crystal structure determination,elemental analyses and IR spectroscopy. The complex crystallizes in the monoclinic system,space group P21/c with a=1.452 8(2) nm,b=0.681 59(11) nm,c=1.464 0(2) nm,β=94.270(2)°,V=1.445 6(4) nm3,Dc=2.243 Mg.m-3,Z=4,Mr=488.14,F (000)=944,μ (Mo Kα)=3.015 mm-1,R=0.031 0 and wR=0.076 2 for 2 424 observed reflections (I>2σ(I)). There are La-O-C-O-C-La double chains in the complex. The chelating carboxylate O atoms and pyridyl N atoms lead the compound to 2D layers structure,which is extended to 3D supramolecular architecture through intermolecular hydrogen bonds. It is interesting that the polymer containing one-dimensional channels. CCDC:708868.A metal-organic coordination polymer {[La（PDC）（N-HPDC）]-H2O}n （1） （H2PDC=pyridine-3,4-dicarboxylic acid） has been hydrothermally synthesized and structurally characterized by X-ray diffraction single-crystal structure determination, elemental analyses and IR spectroscopy. The complex crystallizes in the monoelinic system, space group P21/c with a=1.452 8（2） nm, b=0.681 59（11） nm, c=1.464 0（2） nm,β=94.270（2）°, V=1.445 6（4） nm3, Dc=2.243 Mg·m-3, Z=4, Mr=488.14, F （000）=944,μ（Mo Kα）=3.015 mm^-1, R=0.031 0 and wR=0.076 2 for 2424 observed reflections （1〉2σ（I））. There are La-O-C-O-C-La double chains in the complex. The chelating carboxylate 0 atoms and pyridyl N atoms lead the compound to 2D layers structure, which is extended to 3D supramolecular architecture through intermolecular hydrogen bonds. It is interesting that the polymer containing one-dimensional channels. CCDC： 708868.

关 键 词：镧(Ⅲ)配位聚合物 水热合成 晶体结构 

分 类 号：O614.331[理学—无机化学]