Zhang Xu, Zhang Lei, Wang Meng-Jie, Zhang Kou-Lin
Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
Acta Crystallogr C Struct Chem. 2015 Sep;71(Pt 9):776-82. doi: 10.1107/S2053229615014655. Epub 2015 Aug 8.
Two new coordination polymers (CPs) formed from 5-iodobenzene-1,3-dicarboxylic acid (H2iip) in the presence of the flexible 1,4-bis(1H-imidazol-1-yl)butane (bimb) auxiliary ligand, namely poly[μ2-1,4-bis(1H-imidazol-1-yl)butane-κ(2)N(3):N(3')cobalt(II)], [Co(C8H3IO4)(C10H14N4)]n or [Co(iip)(bimb)]n, (1), and poly[[μ2-1,4-bis(1H-imidazol-1-yl)butane-κ(2)N(3):N(3')zinc(II)] trihydrate], {[Zn(C8H3IO4)(C10H14N4)]·3H2O}n or {[Zn(iip)(bimb)]·3H2O}n, (2), were synthesized and characterized by FT-IR spectroscopy, thermogravimetric analysis (TGA), solid-state UV-Vis spectroscopy, single-crystal X-ray diffraction analysis and powder X-ray diffraction analysis (PXRD). The iip(2-) ligand in (1) adopts the (κ(1),κ(1)-μ2)(κ(1), κ(1)-μ1)-μ3 coordination mode, linking adjacent secondary building units into a ladder-like chain. These chains are further connected by the flexible bimb ligand in a trans-trans-trans conformation. As a result, a twofold three-dimensional interpenetrating α-Po network is formed. Complex (2) exhibits a two-dimensional (4,4) topological network architecture in which the iip(2-) ligand shows the (κ(1))(κ(1))-μ2 coordination mode. The solid-state UV-Vis spectra of (1) and (2) were investigated, together with the fluorescence properties of (2) in the solid state.
在柔性辅助配体1,4 - 双（1H - 咪唑 - 1 - 基）丁烷（bimb）存在下，由5 - 碘苯 - 1,3 - 二甲酸（H2iip）形成了两种新型配位聚合物（CPs），即聚[[μ2 - 1,4 - 双（1H - 咪唑 - 1 - 基）丁烷 - κ(2)N(3):N(3')](μ3 - 5 - 碘苯 - 1,3 - 二羧酸根 - κ(4)O(1),O(1'):O(3):O(3'))钴(II)]，[Co(C8H3IO4)(C10H14N4)]n或[Co(iip)(bimb)]n，（1），以及聚[[[μ2 - 1,4 - 双（1H - 咪唑 - 1 - 基）丁烷 - κ(2)N(3):N(3')](μ2 - 5 - 碘苯 - 1,3 - 二羧酸根 - κ(2)O(1):O(3))锌(II)]三水合物]，{[Zn(C8H3IO4)(C10H14N4)]·3H2O}n或{[Zn(iip)(bimb)]·3H2O}n，（2），并通过傅里叶变换红外光谱（FT - IR）、热重分析（TGA）、固态紫外 - 可见光谱、单晶X射线衍射分析和粉末X射线衍射分析（PXRD）对其进行了表征。（1）中的iip(2 - )配体采用(κ(1),κ(1)-μ2)(κ(1), κ(1)-μ1)-μ3配位模式，将相邻的二级结构单元连接成梯状链。这些链通过处于反式 - 反式 - 反式构象的柔性bimb配体进一步连接。结果，形成了一种双重三维互穿的α - Po网络。配合物（2）呈现出二维（4,4）拓扑网络结构，其中iip(2 - )配体表现出(κ(1))(κ(1))-μ2配位模式。研究了（1）和（2）的固态紫外 - 可见光谱以及（2）在固态下的荧光性质。
