Preparation, characterization, and crystal structure of cis-dichloro-[meso-bis(trans-2-hydroxycyclohexyl) sulphide-OOS]dioxouranium(VI)

Abstract

trans-Bis(2-hydroxycyclohexyl) sulphide, prepared by a simplified synthesis, and its product with uranyl chloride have been characterized. The crystal structure of the complex containing the ligand in the meso-form has been determined from three-dimensional X-ray diffraction data. Crystals are triclinic, space group P, with a= 11.274(2), b= 10.173(2), c= 9.367(2)Å, α= 111.41(5), β= 97.46(5), and γ= 111.21(5)°, with Z= 2. The structure was solved by the heavy-atom method from diffractometer data, and refined by least-squares to a final Rof 6.2%. The co-ordination polyhedron around uranium is distorted pentagonal bipyramidal. The neutral ligand is terdentate with the hydroxy-oxygens and sulphur directly bonded to uranium.