文献类型：期刊文献

英文题名：A new CdII coordination polymer with a self-penetrating architecture induced by the molecular conformation of a rigid bithiophene ligand.

作者：Ji, Ning-Ning Shi, Zhi-Qiang Hu, Hai-Liang

第一作者：Ji, Ning-Ning

通信作者：Shi, Zhi-Qiang

机构：[1] College of Chemistry and Chemical Engineering, Taishan University, Taian, Shandong, 271021, China; [2] College of Chemical Engineering, Guizhou Institute of Technology, Guiyang, Guizhou, 550003, China; [3] State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu, 210093, China

第一机构：College of Chemistry and Chemical Engineering, Taishan University, Taian, Shandong, 271021, China

通信机构：College of Chemistry and Chemical Engineering, Taishan University, Taian, Shandong, 271021, China

年份：2018

卷号：74

期号：2

起止页码：218-223

外文期刊名：Acta Crystallographica Section C: Structural Chemistry

收录：EI(收录号：20180704780423)

语种：英文

外文关键词：Architecture - Benzoic acid - Crystal structure - Geometry - Luminescence - Conjugated polymers - Molecules - X ray diffraction - Cadmium compounds - Topology - Dendrimers - Chelation - Conformations - Single crystals

摘要：The design and synthesis of coordination polymers with a self-penetrating architecture has attracted much interest not only due to their interesting structures but also due to their potential applications. 5,5′-Bis(pyridin-4-yl)-2,2′-bithiophene (bpbp), as a conjugated bithiophene ligand, can exhibit trans and cis conformations and this can lead to the construction of a self-penetrating architecture. In addition, the semi-rigid ancillary ligand 4,4′-oxybis(benzoic acid) (H2oba) can adopt different coordination modes, resulting in coordination polymers with high-dimensional skeletons. A new CdII coordination polymer based on mixed ligands, namely poly[diaquapentakis[μ-5,5′-bis(pyridin-4-yl)-2,2′-bithiophene-κ2N:N′]bis(nitrato-κ2O,O′)tetrakis(μ3-4,4′-oxydibenzoato)-κ10O:O,O′:O′′,O′′′;κ6O:O′:O′′-pentacadmium(II)], [Cd5(C14H14O5)4(NO3)2(C18H12N2S2)5(H2O)2]n, (I), has been synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy and elemental analysis. Single-crystal X-ray diffraction indicates that there are three crystallographically independent CdII cations, three bpbp ligands, two deprotonated oba2- ligands, one nitrate ligand and one coordinated water molecule in the asymmetric unit. One CdII centre is seven-coordinated, exhibiting a distorted {CdN2O5} pentagonal bipyramidal geometry, while the other two Cd centres are both six-coordinated, showing slightly distorted {CdN2O4} octahedral geometries. The most interesting feature is the co-existence of trans and cis conformations in a single net, allowing structural interpenetration via self-threading and yet the expected self-penetrating structure was obtained. Topological analysis shows that the whole three-dimensional framework can be classified as a 3-nodal (4,6,6)-c net with Schl?fli symbol {613.82}2{66}, which is a new topology. Furthermore, the luminescence properties of (I) were examined in the solid state at room temperature.A self-penetrating architecture has been synthesized via molecular conformation control operating on a rigid 2,2′-bithiophene ligand under solvothermal conditions. The most interesting feature is the co-existence of trans and cis conformations in a single net, allowing the structural interpenetration of self-threading and yet the expected self-penetrating structure was obtained. ? 2018 International Union of Crystallography.