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Structure and properties of M/sup I/M/sub 2//sup IV/(PO/sub 4/)/sub 3/ in quadrivalent actinoid phosphates

Journal Article · · Sov. Radiochem. (Engl. Transl.); (United States)
OSTI ID:5389554
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A survey is presented on the crystallographic and IR features of double actinoid-alkali phosphates of the form M/sup (I)/M/sub 2//sup (IV)/ (PO/sub 4/)/sub 3/; it is found that the compounds Li/sup -/, Na/sup -/, K/sup -/, Rb/sup -/, CsTh/sub 2/(PO/sub 4/)/sub 3/, Li/sup -/, Na/sup -/, KU/sub 2/(PO/sub 4/)/sub 3/, NaNp/sub 2/(PO/sub 4/)/sub 3/ have monoclinic structures and form an isostructural series. Double salts do not occur in the uranium-rubidium and uranium-cesium systems. Sodium plutonium phosphate is orthorhombic, which indicates a morphotropic transition in the NaM/sub 2//sup (IV)/ (PO/sub 4/)/sub 3/ series at the Np-Pu boundary. Some regularities have been established in the structures and effects of M/sup (I)/ and M/sup (IV)/.

OSTI ID:
5389554
Journal Information:
Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:1; ISSN SVRDA
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CESIUM COMPOUNDS
CESIUM PHOSPHATES
CLASSIFICATION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLOGRAPHY
DIFFRACTION
DOCUMENT TYPES
ENERGY LEVELS
EXCITED STATES
INFRARED SPECTRA
LITHIUM COMPOUNDS
LITHIUM PHOSPHATES
MONOCLINIC LATTICES
NEPTUNIUM COMPOUNDS
NEPTUNIUM PHOSPHATES
ORTHORHOMBIC LATTICES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PLUTONIUM COMPOUNDS
PLUTONIUM PHOSPHATES
POTASSIUM COMPOUNDS
POTASSIUM PHOSPHATES
REVIEWS
RUBIDIUM COMPOUNDS
RUBIDIUM PHOSPHATES
SCATTERING
SODIUM COMPOUNDS
SODIUM PHOSPHATES
SPACE GROUPS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
THORIUM COMPOUNDS
THORIUM PHOSPHATES
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
URANIUM PHOSPHATES
VALENCE
VIBRATIONAL STATES
X-RAY DIFFRACTION