Liu Huan, Lu Li-Ping
Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
Acta Crystallogr E Crystallogr Commun. 2015 Feb 7;71(Pt 3):m55-6. doi: 10.1107/S2056989015002108. eCollection 2015 Mar 1.
The reaction of ZnO and tri-ethyl-ene-tetra-minehexaacetic acid (H6TTHA) in aqueous solution after refluxing yields the binuclear title compound, [Zn2(C18H26N4O12)(H2O)2]·4H2O. There is a centre of symmetry in the [Zn2(H2TTHA)(H2O)2] mol-ecule in the crystalline state. Both Zn(II) ions are octahedrally surrounded and bound by an N2O3 donor set from the H2TTHA(4-) anion and a water mol-ecule; the N atoms are cis and the water mol-ecule is trans to an N atom. The Zn⋯Zn separation is 7.562 (1) Å. An intra-molecular C-H⋯O inter-action is observed and both carboxyl-ate H atoms are disordered over two adjacent sites. In the crystal, the components are linked by O-H⋯O and C-H⋯O hydrogen bonds generating a three-dimensonal network.
氧化锌与三乙烯四胺六乙酸（H6TTHA）在水溶液中回流反应生成双核标题化合物[Zn2(C18H26N4O12)(H2O)2]·4H2O。在晶体状态下，[Zn2(H2TTHA)(H2O)2]分子存在一个对称中心。两个Zn(II)离子均被八面体包围，并由来自H2TTHA(4-)阴离子的一个N2O3供体基团和一个水分子配位；N原子是顺式的，水分子与一个N原子是反式的。Zn⋯Zn间距为7.562 (1) Å。观察到分子内存在C-H⋯O相互作用，且两个羧酸根H原子在两个相邻位置上无序分布。在晶体中，各组分通过O-H⋯O和C-H⋯O氢键相连，形成三维网络。
