Pentauranium(V) chloride dodecaoxide U/sub 5/O/sub 12/Cl
Journal Article
·
· J. Solid State Chem.; (United States)
The structure of a new uranium oxide chloride U/sub 5/O/sub 12/Cl was determined by X-ray diffraction. It is orthorhombic, Pbmm, a = 7.111(9), b = 19.625(12), c = 4.130(2) A, Z = 2, D/sub m/ = 7.83, D/sub x/ = 8.17 Mg m/sup -3/. The final R = 0.036. The structure is strongly reminiscent of that of ..cap alpha..-U/sub 3/O/sub 8/. It consists of layers of composition U/sub 5/O/sub 7/Cl, alternating with layers of composition O/sub 5/. One U atom has a pentagonal bipyramidal oxygen coordination like in U/sub 3/O/sub 8/, the others have a rather more distorted coordination with six O atoms and one Cl atom. This latter atom covers a range of about 1.7 A along z. The enthalpy of formation of U/sub 5/O/sub 12/Cl has been determined via its enthalpy of solution in a (H/sub 2/SO/sub 4/ + Ce(SO/sub 4/)/sub 2/) solution. The value ..delta.. H/sub f//sup 0/(298.15 K) = -5854.4 +/- 8.6 kJ mole/sup -1/ has been obtained. Its thermochemical stability is compared with the other uranium oxide chlorides. 10 references, 2 figures, 3 tables.
- Research Organization:
- Netherlands Energy Research Foundation ECN, Petten
- OSTI ID:
- 5427152
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 56:2; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Thu May 01 00:00:00 EDT 1980
· J. Solid State Chem.; (United States)
·
OSTI ID:7101645
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Thu Jul 01 00:00:00 EDT 1982
· Inorg. Chem.; (United States)
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OSTI ID:6652379
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Journal Article
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Mon Nov 14 23:00:00 EST 2005
· Journal of Solid State Chemistry
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OSTI ID:20784754
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ACTINIDE COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPUTER CODES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
D CODES
DATA
DIFFRACTION
ENTHALPY
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LATTICE PARAMETERS
MONOCRYSTALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
THERMODYNAMIC PROPERTIES
URANIUM COMPOUNDS
X-RAY DIFFRACTION
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ACTINIDE COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPUTER CODES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
D CODES
DATA
DIFFRACTION
ENTHALPY
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LATTICE PARAMETERS
MONOCRYSTALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
THERMODYNAMIC PROPERTIES
URANIUM COMPOUNDS
X-RAY DIFFRACTION