Research Article: Poly[tetra­aqua­bis­(μ4-thio­phene-2,5-dicarboxyl­ato)(μ2-thio­phene-2,5-dicarboxyl­ato)dieuropium(III)]

Date Published: August 01, 2012

Publisher: International Union of Crystallography

Author(s): Xi-Gang Du, Jun Zhang, Jia-Jia Li.


The three-dimensional coordination polymer, [Eu2(C6H2O4S)3(H2O)4]n, has been synthesized under hydro­thermal conditions. The asymmetric unit comprises one Eu3+ cation, two aqua ligands and one and a half thiophene-2,5-dicarboxylate anions (the half-anion being completed by a twofold rotation axis). The Eu3+ cation is eight-coordinated in a distorted dodeca­hedral geometry. The crystal structure features O—H⋯O hydrogen bonds.

Partial Text

For the structures and potential applications of metal hybrid compounds, see: Bo et al. (2008 ▶). For a number of lanthanide coordination polymers based on pyridine­dicarb­oxy­lic acid, see: Xu et al. (2011 ▶). For metal-organic framework structures formed by 4f metals and thiophene-2,5-dicarboxylate anions, see: Huang et al. (2009 ▶).




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