Acta Cryst. (2007). E63, m385-m387  [ doi:10.1107/S1600536806046538 ]

catena-Poly[[(isonicotinato)uranyl(VI)]--oxalato]

D.-S. Liu, T.-Q. Shi, S.-F. Liu, S.-M. Ying and X.-F. Li

Abstract: The repeat unit of the title compound, [U(C₆H₅NO₂)(C₂O₄)O₂]_n, consists of a uranyl unit, an oxalate anion and a zwitterionic isonicotinic acid. The U atoms and the isonicotinic acid ligand are located on a crystallographic twofold rotation axis, while the oxalate lies on an inversion centre. Each UO₂ unit is coordinated by two oxalate ligands and one isonicotinic ligand. In the crystal structure, the UO₈ hexagonal bipyramids are connected by oxalate groups to form chains, and adjacent chains are linked into two-dimensional sheets by bifurcated N-HO hydrogen bonds.

Online 10 January 2007

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