THE HALIDES OF NIOBIUM AND TANTALUM. PART VI

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.

DOI:https://doi.org/10.1039/jr9620000150· OSTI ID:4807485

Fairbrother, F; Nixon, J F

Complex formation between dimethyl sulfide, diethyl sulfide, and tetrahydrothiophen and niobium pentachloride and pentabromide, and tantalum pentachloride, pentabromide, and pentaiodide was studied. The following crystalline 1: 1 complexes were isolated, and their compositions established by analysis and vapor pressure measurements: NbCl/sub 5/, Me/sub 2/S; NbBr/sub 5/, Me/sub 2/S; TaCl/sub 5/,Me/sub 2/S; TaBr/sub 5/,Me/sub 2/S(mp 108 deg ); NbCl/sub 5/,Et/sub 2/S(mp approximates 17 deg ); TaCl/sub 5/,Et/sub 2/S (liquid)-all of which distilled or sublimed unchangedand NbBr/sub 5/,Et/sub 2/S, TaBr/sub 5/Et/ sub 2/S, and TaI/sub 5/, Et/sub 2/S which decomposed on heating into their original components. There was also some evidence for TaCl/sub 5/2Me/sub 2/S, melting incongruently at about 15 deg . The halides are more soluble in the sulfides than in diethyl ether, and the oomplexes more stable. There is very little splitting of the sulfide on heating. Tetrahydrothiophen formed 1: 2 complexes: NbCl/sub 5/,2STACH/sub 2!/sub 4/S,NbBr/sub 5/,2STACH/sub 2/!/sub 4/S, TaCl/sub 5/,2STACH/sub 2/!/sub 4/S,TaBr/sub 5/,2STACH/sub 2/!/sub 4/S, and TaI/ sub 5/,2STACH/sub 2/!/sub 4/S. Except for TaI/sub 5/,2STACH/ sub 2!/sub 4/S these were insoluble in tetrahydrothiophen. (auih)

• Research Organization: The University, Manchester, Eng.
• NSA Number: NSA-16-011629
• OSTI ID: 4807485
• 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

Related Subjects

CHEMISTRY
CRYSTALS
DECOMPOSITION
DISTILLATION
ETHERS
ETHYL RADICALS
EVAPORATION
HALIDES
HEATING
MELTING POINTS
METHYL RADICALS
NIOBIUM BROMIDES
NIOBIUM CHLORIDES
NIOBIUM COMPLEXES
NIOBIUM COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PRESSURE
QUALITATIVE ANALYSIS
SOLUBILITY
STABILITY
SUBLIMATION
SULFIDES
TANTALUM BROMIDES
TANTALUM CHLORIDES
TANTALUM COMPLEXES
TANTALUM COMPOUNDS
TANTALUM IODIDES
THERMODYNAMICS
VAPORS