Crystal and molecular structure of tetrachlorobis(triphenylphosphine oxide)uranium(IV)

Abstract

The crystal structure of the title compound has been determined from three-dimensional X-ray diffraction data collected on a diffratometer. The compound crystallises in space group C2/c, with a= 14.02, b= 13.21, c= 20.37Åβ= 95.87, and Z= 4. The structure was solved by Patterson and Fourier methods, and full-matrix least-squares refinement based on 2 381 reflections gave a final R 0.047. The complex has a distorted octahedral configuration with the neutral ligands co-ordinated in cis-positions; U–O is 2.242. and U–Cl 2.609 and 2.626 Å.The results are discussed in relationship to the spectral data of related compounds.