Cheng Shao-Min, Wang Xian-Fei, Yang Fang, Chen Hang, Liu Wen-Long
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China.
Acta Crystallogr C Struct Chem. 2014 Jul;70(Pt 7):693-6. doi: 10.1107/S2053229614013667. Epub 2014 Jun 14.
In the title polymer, [Pb(C9H4O6)]n, the asymmetric unit contains a monomer of a Pb(II) cation with a doubly deprotonated 3-carboxybenzene-1,2-dicarboxylate dianion (1,2,3-Hbtc(2-)). Each Pb(II) centre is seven-coordinated by seven O atoms of bridging carboxy/carboxylate groups from five 1,2,3-Hbtc(2-) ligands, forming a distorted pentagonal bipyramid. The Pb(II) cations are bridged by 1,2,3-Hbtc(2-) anions, yielding two-dimensional chiral layers. The layers are stacked above each other to generate a three-dimensional supramolecular architecture via a combination of C-H···O interactions. The thermogravimetric and optical properties are also reported.
在标题聚合物[Pb(C₉H₄O₆)]ₙ中，不对称单元包含一个Pb(II)阳离子单体和一个双去质子化的3-羧基苯-1,2-二羧酸二价阴离子（1,2,3-Hbtc(2-)）。每个Pb(II)中心由来自五个1,2,3-Hbtc(2-)配体的桥连羧基/羧酸根基团的七个O原子七配位，形成一个扭曲的五角双锥。Pb(II)阳离子由1,2,3-Hbtc(2-)阴离子桥连，产生二维手性层。这些层相互堆叠，通过C-H···O相互作用的组合形成三维超分子结构。还报道了热重和光学性质。
