Single-crystal structures of uranium and neptunium oxychalcogenides AnOQ (An=U, Np; Q=S, Se)

• Published in: Journal of solid state chemistry Vol. 183; no. 3; pp. 547 - 550
• Main Authors: GENG BANG JIN, RAW, Adam D, SKANTHAKUMAR, S, HAIRE, Richard G, SODERHOLM, L, IBERS, James A
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier 01.03.2010
• Subjects: ACTINIDE COMPOUNDS; COHERENT SCATTERING; Condensed matter: structure, mechanical and thermal properties; CRYSTALLOGRAPHY; CRYSTALS; DIFFRACTION; DISTANCE; Distortion; Exact sciences and technology; Inorganic compounds; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; Interatomic distance; INTERATOMIC DISTANCES; MATERIALS SCIENCE; MONOCRYSTALS; Neptunium; NEPTUNIUM COMPOUNDS; OXYGEN COMPOUNDS; OXYSELENIDES; OXYSULFIDES; Physics; SCATTERING; SELENIUM COMPOUNDS; Single crystals; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; SULFUR COMPOUNDS; TRANSURANIUM COMPOUNDS; Uranium; URANIUM COMPOUNDS; X-RAY DIFFRACTION; X-rays; Monocrystals; Uranium Chalcogenides oxides; Uranium oxychalcogenides; Powder pattern; Uranium; Interatomic distances; Neptunium oxychalcogenides; XRD; Neptunium Chalcogenides oxides; Neptunium; Single-crystal X-ray structures; Crystal structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2009.12.013

The compounds UOS, UOSe, NpOS, and NpOSe have been synthesized and their structures determined by means of single-crystal X-ray diffraction methods. The results provide more detailed crystallographic information, including more precise interatomic distances, than earlier determinations from powder diffraction data. These isostructural compounds adopt the PbFCl structure type. Each An atom is surrounded by four O and five Q atoms in a distorted monocapped square-antiprismatic arrangement. AB: