THE THORIUM DIOXIDE-THORIUM TETRAFLUORIDE SYSTEM
The thorium dioxide --thorium tetrafluoride system has been studied by x- ray diffraction. Thorium tetrafluoride dissolves in thoria to the extent of about 25 mole%, the cell constant a increasing from 5.586 to 5.633 kX. The arrangement of the anions in these mixed crystals is discussed. No solid solubility of thoria in thorium tetrafluoride was observed. Thorium oxyfluoride, ThOF/sub 2/, was formed by the reaction of equimolar mixtures of thorin and the tetrafluoride at 900 deg in an inert atmosphere. Diffraction photographs showed that the true unit cell of the oxyfluoride is orthorhombic and not hexagonal as previously suggested. The deviation from hexagonal symmetry is probably due to the oxygen and fluorine atoms' segregating into distinct sets of lattice sites. Attempts to prepare disordered thorium oxyfluoride with a random anion distribution were unsuccessful. (auth)
- Research Organization:
- Atomic Energy Research Establishment, Harwell, Berks, Eng.
- NSA Number:
- NSA-12-005253
- OSTI ID:
- 4310595
- Journal Information:
- Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc., Journal Name: Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.; ISSN JCSOA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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