Liu Lei-Lei, Zhao Feng
College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, Henan, People's Republic of China.
Acta Crystallogr C. 2013 Jan;69(Pt 1):29-32. doi: 10.1107/S0108270112048974. Epub 2012 Dec 13.
The solvothermal reaction of Zn(OAc)(2)·2H(2)O with 3,3'-(diazenediyl)dibenzoic acid (H(2)ADB) in H(2)O at 393 K afforded the title complex, Zn(C(14)H(8)N(2)O(4))(H(2)O). The asymmetric unit contains half a Zn(II) cation, half an ADB ligand and half a water molecule. Each Zn(II) centre lies on a crystallographic twofold rotation axis and is five-coordinated by four O atoms of bridging carboxylate groups from four ADB ligands and one O atom from a water molecule, forming a distorted trigonal-bipyramidal coordination geometry. The [Zn(H(2)O)] subunits are bridged by carboxylate groups to give one-dimensional Zn(μ-COO)(4)(H(2)O) chains. The chains are linked by ADB ligands into two-dimensional sheets, and these sheets are further connected to neighbouring sheets via hydrogen bonds (OW-HW...O), forming a three-dimensional hydrogen-bond-stabilized structure with an unprecedented 3(7)4(17)5(2)6(2) topology.
在393 K下，将Zn(OAc)₂·2H₂O与3,3'-（重氮二亚基）二苯甲酸（H₂ADB）在水中进行溶剂热反应，得到了标题配合物[Zn(C₁₄H₈N₂O₄)(H₂O)]ₙ。不对称单元包含半个Zn(II)阳离子、半个ADB配体和半个水分子。每个Zn(II)中心位于一个晶体学二重旋转轴上，由来自四个ADB配体的桥连羧酸根基团的四个O原子和来自一个水分子的一个O原子进行五配位，形成扭曲的三角双锥配位几何构型。[Zn(H₂O)]亚基通过羧酸根基团桥连，形成一维[Zn(μ-COO)₄(H₂O)]ₙ链。这些链通过ADB配体连接成二维片层，并且这些片层通过氢键（OW-HW...O）进一步连接到相邻片层，形成具有前所未有的3(7)4(17)5(2)6(2)拓扑结构的三维氢键稳定结构。
