Syntheses, Structures and Characterization of Two New Pb^II Polymers Built on a Kinked Flexible Thiodiacetic Acid Ligand

作     者：侯向阳 王潇 付峰 王记江 

作者机构：Department of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Chemical Reaction Engineering Yan'an University 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2013年第32卷第9期

页      面：1339-1347页

核心收录：

学科分类：07[理学] 070305[理学-高分子化学与物理] 0703[理学-化学] 

基　　金：Supported by Scientific Research Program Funded by Shaanxi Provincial Education Department(No.11JK0583) 

主　　题：lead thiodiacetic acids crystal structure characterization 

摘      要：Two new PbII metal-organic coordination polymers,namely,[Pb（tda）]n（1） and [Pb（tda）（phen）]n（2）（H2 tda = thiodiglycolic acid,phen = 1,10-phenanthroline）,were synthesized under hydrothermal conditions and characterized by elemental analysis,IR,UV spectra,TG technique and X-ray crystallography.Complex 1 crystallizes in the orthorhombic system,space group Iba2 with a = 9.0417（14）,b = 19.360（4）,c = 7.5741（12）,C4H4O4PbS,Mr = 355.32,V = 1325.8（4）3,Dc = 3.560 g·cm-3,F（000） = 1264,μ（MoKa） = 25.711 mm-1,S = 1.086 and Z = 8.The final refinement gave R = 0.0387 and wR = 0.0986 for 3077 observed reflections with I 2σ（I）.Complex 1 is a 2D infinite grid-like（4,4） topological structure constructed by PbII atoms and tda anions,in which tda ligands exhibit bis（syn,syn-bridging bidentate,chelating-bridging tetradentate） mode.Complex 2 crystallizes in the triclinic system,space group P1 with a = 8.3570（17）,b = 8.7591（18）,c = 10.895（2）,α = 76.00（3）,β = 80.50（3）,γ = 77.61（3）°,C16H12N O4PbS,Mr = 535.53,V = 750.4（3）3,Dc = 2.370 g·cm-3,F（000） = 504,μ（MoKa） = 11.405 mm-1,S = 1.018 and Z = 2.The final refinement gave R = 0.0332 and wR = 0.0629 for 3360 observed reflections with I 2σ（I）.Complex 2 is a 1D chain structure,in which phen ligands are attached on both sides of the 1D chain and tda ligand exhibits a bis（syn,syn-bridging bidentate,chelating tridentate） mode.Finally,complex 2 is extended into a 2D supramolecular structure by strong π···π stacking interactions.