Journal of the Chemical Society A Inorganic Physical Theoretical · 1968 · 26 citations · 0 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistryPhysical ChemistrySolid-state ChemistryCoordination ChemistryCrystal ChemistryCrystal SystemsInorganic SpectroscopyLanthanide ChemistryMetal OxidesAntimony ChemistryCrystallographic SymmetryInfrared Absorption SpectraInfrared SpectraNeptunium MaterialsOrthorhombic SymmetryThorium ChemistryUnit Cell Parameters
Actinide(IV) oxydihalides of the type MOX2(M = Th, Pa, U, and Np; X = Cl, Br, and I) have been prepared by reaction of the appropriate tetrahalide with antimony sesquioxide, Sb2O3, at 400° in a vaccum. Unit cell parameters are reported for the isostructural series of oxydichlorides which possess orthorhombic symmetry, space-group Pbam. Infrared spectra have been recorded for all the compounds and the results are compared with previous assignments for UOCl2. Metal–oxygen vibrations occur in the region 600–225 cm.–1.