Fu Wei Wei, Li Juan, Liu Shu Ting, Zhao Dan, Zhou Xue, Tong Yang
Key Laboratory of Functional Organometallic Materials of General Colleges and Universities in Hunan Province, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, People's Republic of China.
Acta Crystallogr C Struct Chem. 2017 Jun 1;73(Pt 6):498-502. doi: 10.1107/S2053229617007653. Epub 2017 May 31.
The bifunctional pyridine-2,3-dicarboxylic acid (Hpdc) ligand has one N atom and four O atoms, which could bind more than one Ag centre with diverse binding modes. A novel infinite one-dimensional Ag coordination polymer, namely catena-poly[[silver(I)-(μ-pyridine-2,3-dicarboxylato-κN:O)-silver(I)-tris(μ-5-methyl-1,3,4-thiodiazol-2-amine-κN:N')] monohydrate ethanol monosolvate], {[Ag(CHNO)(CHNS)]·HO·CHOH}, has been synthesized using Hpdc and 5-methyl-1,3,4-thiadiazol-2-amine (tda), and characterized by single-crystal X-ray diffraction. One Ag atom is located in a four-coordinated AgN tetrahedral geometry and the other Ag atom is in a tetrahedral AgNO geometry. A dinuclear Ag cluster formed by three tda ligands with a paddelwheel configuration is bridged by the dianionic pdc ligand into a one-dimensional coordination polymer. Interchain N-H...O hydrogen bonds extend the one-dimensional chains into an undulating two-dimensional sheet. The sheets are further packed into a three-dimensional supramolecular framework by interchain N-H...O hydrogen bonds.
双功能的吡啶-2,3-二羧酸（Hpdc）配体含有一个氮原子和四个氧原子，它能以多种结合模式与多个银中心结合。一种新型的无限一维银配位聚合物，即链状聚[[银（I）-（μ-吡啶-2,3-二羧基-κN:O）-银（I）-三（μ-5-甲基-1,3,4-噻二唑-2-胺-κN:N'）]一水合物乙醇单溶剂合物]，{[Ag(CHNO)(CHNS)]·HO·CHOH}，已通过Hpdc和5-甲基-1,3,4-噻二唑-2-胺（tda）合成，并通过单晶X射线衍射进行了表征。一个银原子位于四配位的AgN四面体几何构型中，另一个银原子处于四面体AgNO几何构型中。由三个具有桨轮构型的tda配体形成的双核银簇通过双阴离子pdc配体桥连形成一维配位聚合物。链间N-H...O氢键将一维链扩展为起伏的二维片层。这些片层通过链间N-H...O氢键进一步堆积成三维超分子框架。
