Fluoride crystal structures. Part XXIII. catena-Di-µ-fluoro-(dimethyl sulphoxide)dioxouranium(VI)

Abstract

The structure of the title compound has been determined by the heavy-atom method from 530 reflections, measured with a diffractometer. and refined by full-matrix least-squares methods to R 0.046. Crystals are orthorhombic, space group Ama2, a= 7.36(1), b= 14.77(2), c= 6.88(1)Å. In the structure uranium atoms are linked by di-µ-fluoro-bridges into zigzag chains with U–F 2.33 Å. The pentagonal bipyramidal co-ordination of the metal atoms is completed by two oxygen atoms in apical positions (U–O 1.74 Å) and by the oxygen atom of the dimethyl sulphoxide ligand (U–O 2.35 Å) in the fifth equatorial position.