Liu Lei-Lei, Zhou Yan, Li Ping, Tian Jiang-Ya
College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, Henan, People's Republic of China.
Acta Crystallogr C Struct Chem. 2014 Feb;70(Pt 2):178-81. doi: 10.1107/S2053229613034591. Epub 2014 Jan 11.
In poly[[μ2-1,2-bis(pyridin-4-yl)ethene-κ(2)N:N'][μ2-2,2'-(diazenediyl)dibenzoato-κ(3)O,O':O'']cadmium(II)], [Cd(C14H8N2O4)(C12H10N2)]n, the asymmetric unit contains one Cd(II) cation, one 2,2'-(diazenediyl)dibenzoate anion (denoted L(2-)) and one 1,2-bis(pyridin-4-yl)ethene ligand (denoted bpe). Each Cd(II) centre is six-coordinated by four O atoms of bridging/chelating carboxylate groups from three L(2-) ligands and by two N atoms from two bpe ligands, forming a distorted octahedron. The Cd(II) cations are bridged by L(2-) and bpe ligands to give a two-dimensional (4,4) layer. The layers are interlinked through bridging carboxylate O atoms from L(2-) ligands, generating a two-dimensional bilayered structure with a 3(6)4(13)6(2) topology. The bilayered structures are further extended to form a three-dimensional supramolecular architecture via a combination of hydrogen-bonding and aromatic stacking interactions.
在聚[[μ2 - 1,2 - 双（吡啶 - 4 - 基）乙烯 - κ(2)N:N'][μ2 - 2,2' - （重氮二基）二苯甲酸根 - κ(3)O,O':O'']镉（II）]，[Cd(C14H8N2O4)(C12H10N2)]n中，不对称单元包含一个Cd(II)阳离子、一个2,2' - （重氮二基）二苯甲酸根阴离子（表示为L(2 - )）和一个1,2 - 双（吡啶 - 4 - 基）乙烯配体（表示为bpe）。每个Cd(II)中心由来自三个L(2 - )配体的桥连/螯合羧酸根基团的四个O原子和来自两个bpe配体的两个N原子六配位，形成一个扭曲的八面体。Cd(II)阳离子由L(2 - )和bpe配体桥连，形成二维（4,4）层。这些层通过来自L(2 - )配体的桥连羧酸根O原子相互连接，生成具有3(6)4(13)6(2)拓扑结构的二维双层结构。通过氢键和芳香堆积相互作用的组合，双层结构进一步扩展形成三维超分子结构。
