Research Article: Poly[[diaqua­(1,10-phenanthroline-κ2N,N′)(μ3-4-sulfonato­benzene-1,2-di­car­boxyl­ato-κ4O1:O2,O2′:O4)erbium(III)] dihydrate]

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Kou-Lin Zhang, Jian-Guo Lin, Seik Weng Ng.


The 4-sulfophthalate trianion in the polymeric complex, {[Er(C8H3O7S)(C12H8N2)(H2O)2]·2H2O}n, bridges three water/phenanthroline-coordinated ErIII ions to form a three-dimensional network architecture. The metal atom is further chelated by a carboxyl­ate group and is covalently bonded to a monodentate carboxyl­ate group as well as to a monodentate sulfonate group in a distorted square anti­prismatic geometry. The coordinating water molecules and the lattice water molecules, one of which is disordered over two positions [major component 65 (3)%], are hydrogen bonded to the network.

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For a related aqua­(1,10-phenanthroline)EuIII derivative, see: Xiao et al. (2010 ▶).