catena-Poly[[[pentaaquaeuropium(III)]--5-sulfonatoisophthalato-4O1,O1':O3,O3'] 4,4'-bipyridine N,N'-dioxide hemisolvate trihydrate]

Acta Crystallographica Section E

Structure Reports Online

Volume 66, Part 11 (November 2010)

metal-organic compounds

xu5055 scheme

Acta Cryst. (2010). E66, m1433 [ doi:10.1107/S1600536810041838 ]

catena-Poly[[[pentaaquaeuropium(III)]--5-sulfonatoisophthalato-⁴O¹,O^1':O³,O^3'] 4,4'-bipyridine N,N'-dioxide hemisolvate trihydrate]

A.-Z. Wu and S. W. Ng

Abstract: In the crystal structure of the title compound, {[Eu(C₈H₃O₇S)(H₂O)₅]·0.5C₁₀H₈N₂O₂·3H₂O}_n, the Eu^III coordination polymer displays a ribbon motif as the 5-sulfoisopthalate anion uses one of carboxyl -CO₂ units to chelate to a Eu atom and the other to bind to other two Eu atoms; the sulfonyl -SO₃ unit is not involved in coordination. Adjacent ribbons are linked by O-HO hydrogen bonds, generating a three-dimensional network. The 4,4'-bipyridine-N,N'-dioxide molecule lies on an inversion centre and is hydrogen-bonded to the complex network. The coordination geometry of the Eu atom is a monocapped square antiprism.