Synthesis,Crystal Structure and Thermal Behavior of a New 2D Barium(Ⅱ) Coordination Polymer with 1H-benzimi-dazole-5,6-dicarboxylate as the Single Ligand  

作　　者：李琳 张玉涛 程劲松 赵荣飞 

机构地区：[1]Department of Chemistry,Biology and Agriculture,Anshun University

出　　处：《Chinese Journal of Structural Chemistry》2011年第4期563-567,共5页结构化学（英文）

基　　金：supported by the Anshun university

摘　　要：The self-assembly of 1H-benzimidazole-5,6-dicarboxylic acid with barium chloride under hydrothermal conditions afforded a new 2D coordination polymer,[Ba2（L）（HL）Cl]n（1,L = 1H-benzimidazole-5,6-dicarboxylate）,which was characterized by elemental analysis,infrared spectroscopy,thermogravimetric analysis,and single-crystal X-ray diffraction.Compound 1 is of monoclinic system,space group P21/c with a = 10.0145（6）,b=25.6854（15）,c=7.3116（4） ？,β = 99.4980（10）°,V = 1854.95（19）3,C18H9Ba2ClN4O8,Z = 4,Mr=719.42,Dc = 2.576 g/cm3,μ（MoKα） = 4.427 mm-1,F（000） = 1352,the final R = 0.0202 and wR=0.0465 for 3051 observed reflections with I 2σ（I）.It exhibits an interesting two-dimensional network structure and high thermal stability（up to 420 ℃）.The self-assembly of 1H-benzimidazole-5,6-dicarboxylic acid with barium chloride under hydrothermal conditions afforded a new 2D coordination polymer,[Ba2（L）（HL）Cl]n（1,L = 1H-benzimidazole-5,6-dicarboxylate）,which was characterized by elemental analysis,infrared spectroscopy,thermogravimetric analysis,and single-crystal X-ray diffraction.Compound 1 is of monoclinic system,space group P21/c with a = 10.0145（6）,b=25.6854（15）,c=7.3116（4） ？,β = 99.4980（10）°,V = 1854.95（19）3,C18H9Ba2ClN4O8,Z = 4,Mr=719.42,Dc = 2.576 g/cm3,μ（MoKα） = 4.427 mm-1,F（000） = 1352,the final R = 0.0202 and wR=0.0465 for 3051 observed reflections with I 2σ（I）.It exhibits an interesting two-dimensional network structure and high thermal stability（up to 420 ℃）.

关 键 词：coordination polymer hydrothermal synthesis crystal structure thermal behavior 

分 类 号：O634[理学—高分子化学]