Zhang Wenjun, Chen Yanmei, Lei Tao, Li Yahong, Li Wu
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):m569-70. doi: 10.1107/S1600536811012360. Epub 2011 Apr 13.
The title compound {(C(3)H(5)N(2))(2)[Pr(2)(C(7)H(3)NO(4))(4)(H(2)O)(4)]}(n), has a chain structure featuring a dimeric unit consisting of two Pr(III) atoms within a dodecahedral environment. Each of the metal cations is coordinated by two N atoms and two O atoms from two pyridine-2,5-dicarboxyl-ate ligands, two O atoms from another two pyridine-2,5-dicarboxyl-ate ligands and two water O atoms. The Pr(III) ions are bridged by two ligands along the c axis, forming the dimeric unit, and these are connected by four ligands along the b axis, forming a chain. N-H⋯O and O-H⋯O hydrogen bonds are found in the structure.
标题化合物{(C₃H₅N₂)₂[Pr₂(C₇H₃NO₄)₄(H₂O)₄]}ₙ具有链状结构，其特征是在十二面体环境中由两个Pr(III)原子组成的二聚体单元。每个金属阳离子由来自两个吡啶 - 2,5 - 二羧酸酯配体的两个N原子和两个O原子、来自另外两个吡啶 - 2,5 - 二羧酸酯配体的两个O原子以及两个水分子的O原子配位。Pr(III)离子沿c轴由两个配体桥联形成二聚体单元，这些二聚体单元沿b轴通过四个配体相连形成链状结构。结构中存在N - H⋯O和O - H⋯O氢键。
