Synthesis, Crystal Structure and I2 Capture of a Cd(Ⅱ) Coordination Polymer Based on a Linear Bipyridyl Benzene Ligand  

作　　者：张有娟 刘雷雷 张艳 王志鹏 董小芳 李青青 陈静 

机构地区：[1]College of Chemistry and Chemical Engineering,Anyang Normal University [2]College of Chemistry and Molecular Engineering,Zhengzhou University

出　　处：《Chinese Journal of Structural Chemistry》2018年第5期779-786,共8页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(No.21071006);Henan Province Key Laboratory of New Optoelectronic Functional Materials(No.aynu201703);Anyang Normal University Breeding Fund

摘　　要：A new complex with formula [Cd（3-pbpmb）2 I2]n 1（3-pbpmb = 1,4-bis（pyridine-3-ylmethoxy）benzene）, has been solvothermally synthesized and characterized. The crystal belongs to monoclinic system, space group P21/n with a = 8.2905（17）, b = 16.078（3）, c = 13.213（3）A, β = 99.44（3）°, Mr = 950.86, V = 1737.3（6） A^3, Z = 2, Dc = 1.818 g/cm^3, F（000） = 924, m = 2.450 mm（-1）, the final R = 0.0198 and w R = 0.0467 for 3053 observed reflections（I ＆gt; 2σ（I））. The Cd（Ⅱ） ion is coordinated by four N atoms of four 3-pbpmb ligands and two iodine ions to furnish a distorted octahedral coordination geometry. The Cd（Ⅱ） ion and its own symmetry-related ions are bridged by N atoms from two 3-pbpmb ligands to generate a ＂zigzag＂ 1-D chain coordination polymer. These 1D chains are further connected into a three-dimensional（3D） framework by C–H×××pinteractions and intermolecular C–H×××I hydrogen bond. Interestingly, 1 displays efficient sorption of molecular iodine gas（up to 111 wt%）, but invalid sorption of molecular water gas.A new complex with formula [Cd（3-pbpmb）2 I2]n 1（3-pbpmb = 1,4-bis（pyridine-3-ylmethoxy）benzene）, has been solvothermally synthesized and characterized. The crystal belongs to monoclinic system, space group P21/n with a = 8.2905（17）, b = 16.078（3）, c = 13.213（3）A, β = 99.44（3）°, Mr = 950.86, V = 1737.3（6） A^3, Z = 2, Dc = 1.818 g/cm^3, F（000） = 924, m = 2.450 mm（-1）, the final R = 0.0198 and w R = 0.0467 for 3053 observed reflections（I ＆gt; 2σ（I））. The Cd（Ⅱ） ion is coordinated by four N atoms of four 3-pbpmb ligands and two iodine ions to furnish a distorted octahedral coordination geometry. The Cd（Ⅱ） ion and its own symmetry-related ions are bridged by N atoms from two 3-pbpmb ligands to generate a ＂zigzag＂ 1-D chain coordination polymer. These 1D chains are further connected into a three-dimensional（3D） framework by C–H×××pinteractions and intermolecular C–H×××I hydrogen bond. Interestingly, 1 displays efficient sorption of molecular iodine gas（up to 111 wt%）, but invalid sorption of molecular water gas.

关 键 词：crystal structure Cd（Ⅱ） compound coordination polymer I2 capture 

分 类 号：O641.4[理学—物理化学]