Characterization of tantalum pentachloride containing melts by Raman spectroscopy
Raman spectroscopy has been used to obtain information on various TaCl/sub 5/ containing melts. In molten TaCl/sub 5/, studied between 220 and 350/sup 0/C, a gradual dissociation of molecular Ta/sub 2/Cl/sub 10/(D/sub 2h/) to monomeric TaCl/sub 5/(D/sub 3h/) appears to take place. Evidence for a stable octahedral TaCl/sub 6//sup -/ ion in molten KTaCl/sub 6/ at 420/sup 0/C is presented. The binary TaCl/sub 5/-AlCl/sub 3/ system at approx. 200/sup 0/C contains noninteracting Ta/sub 2/Cl/sub 10/ and Al/sub 2/Cl/sub 6/ molecules. The complexes formed when TaCl/sub 5/ is dissolved in AlCl/sub 3/-NaCl and AlCl/sub 3/-KCl melts depend on acidity and temperature: TaCl/sub 6//sup -/(O/sub h/) is present only in basic to slightly acidic melts; TaCl/sub 5/(D/sub 3h/) is mainly stable in neutral and acidic melts at high temperature; Ta/sub 2/Cl/sub 10/ is found only in acidic melts at lower temperatures.
- Research Organization:
- Univ. of Tennessee, Knoxville
- OSTI ID:
- 5879274
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 18:9; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
DATA
DATA FORMS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
INFORMATION
ISOLATED VALUES
NUMERICAL DATA
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
RAMAN SPECTRA
SODIUM CHLORIDES
SODIUM COMPOUNDS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TANTALUM CHLORIDES
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS