Xu Yong-Jun, Yang Xiao-Xi, Zhao Hong-Bin
College of Chemistry and Environmental Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2009 Feb 21;65(Pt 3):m310. doi: 10.1107/S160053680900542X.
In the title complex, Pr(C(6)H(4)NO(3))(C(2)O(4))(H(2)O)(2), each Pr(III) ion is coordinated by eight O atoms from two 2-oxynicotinate ligands, two oxalate ligands and two water mol-ecules, displaying a distorted bicapped square-anti-prismatic geometry. The carboxyl-ate groups link adjacent praseodymium metal centres, forming layers parallel to the bc plane. The crystal packing is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.
在标题配合物[Pr(C₆H₄NO₃)(C₂O₄)(H₂O)₂]ₙ中，每个Pr(III)离子由来自两个2-氧代烟酸配体、两个草酸根配体和两个水分子的八个O原子配位，呈现出扭曲的双帽四方反棱柱几何构型。羧酸根基团连接相邻的镨金属中心，形成平行于bc平面的层。晶体堆积通过分子间的O—H⋯O和N—H⋯O氢键得以稳定。
