One-dimensional uranium-organic framework in catena-poly[[di-mu2-hydroxido-bis[dioxouranium(VI)]]-di-mu2-2-pyridylacetato-kappa(3)O,N:O';kappa(3)O:O',N].
In the title compound, {[UO2(C7H6NO2)(OH)]}n, the U atom is in a seven-coordinated pentagonal-bipyramidal environment. Each uranyl ion is bound to the N and one of the O atoms of a 2-pyridylacetate ligand, to one O atom from a second ligand and to two bridging hydroxide groups, all located in the equatorial plane. Hydroxide bridging gives uranyl dimers, which are assembled into planar and rectilinear ribbons by carboxylate bridges. 12-Membered rings are defined by proximal dimers in the ribbons, with two intra-ring hydrogen bonds involving the hydroxide groups and two carboxylate O atoms.
Thuéry
Pierre
P
CEA/Saclay, DSM/DRECAM/SCM (CNRS URA 331), Bâtiment 125, 91191 Gif-sur-Yvette, France. pierre.thuery@cea.fr