Zhu Li-Cai
School of Chemistry and Environment, South China Normal University, Guangzhou 510631, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1683. doi: 10.1107/S1600536811045673. Epub 2011 Nov 5.
In the title compound, Yb(2)(C(5)H(2)N(2)O(4))(2)(SO(4))(H(2)O)(2), the Yb(III) ion is eight-coordinated by four O atoms and one N atom from three imidazole-4,5-dicarboxyl-ate ligands, two O atoms from one SO(4) (2-) anion (site symmetry 2), as well as one O atom of a water mol-ecule, giving a bicapped trigonal-prismatic coordination geometry. The metal coordination units are connected by bridging imidazole-4,5-dicarboxyl-ate and sulfate ligands, generating a heterometallic layer. The layers are stacked along the a axis via N-H⋯O, O-H⋯O, and C-H⋯O hydrogen-bonding inter-actions, generating a three-dimensional framework.
在标题化合物[Yb₂(C₅H₂N₂O₄)₂(SO₄)(H₂O)₂]ₙ中，Yb(III)离子由来自三个咪唑-4,5-二羧酸根配体的四个O原子和一个N原子、来自一个SO₄²⁻阴离子（位点对称性2）的两个O原子以及一个水分子的一个O原子八配位，形成一个双帽三角棱柱配位几何构型。金属配位单元通过桥连的咪唑-4,5-二羧酸根和硫酸根配体相连，形成一个异金属层。这些层通过N-H⋯O、O-H⋯O和C-H⋯O氢键相互作用沿a轴堆叠，形成一个三维框架。
