Titanium (III) phosphide
Crystal structure | ||||||||||||||||
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__ Ti 3+ __ P 3− | ||||||||||||||||
General | ||||||||||||||||
Surname | Titanium (III) phosphide | |||||||||||||||
other names |
Titanium monophosphide |
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Ratio formula | TiP | |||||||||||||||
Brief description |
black-gray solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 78.84 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
3.94 g cm −3 |
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Melting point |
1860 ° C |
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safety instructions | ||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Titanium (III) phosphide is an inorganic chemical compound from the group of phosphides .
Extraction and presentation
Titanium (III) phosphide can be obtained from the elements by pressure synthesis.
It can also be obtained by reacting monophosphane with titanium (IV) chloride at 750 ° C. Likewise possible is the electrolytic preparation of a nearly stoichiometrically composed titanium (III) phosphide powder at 860 ° C from a solution of 10% titanium dioxide in a mixed melt which, in addition to di- and metaphosphate, also contains sodium chloride and lithium fluoride .
Finely powdered titanium hydride can be converted into phosphides with lower phosphorus contents at 800-1000 ° C with a monophosphine / hydrogen mixture (TiP 0.1-0.6 ).
properties
Titan (III) phosphide is a black-gray, metallic-looking and thermally very stable powder that is not very vulnerable to acids, even when heated. It has a hexagonal crystal structure with the space group P 6 3 / mmc (space group no. 194) (a = 3.487 Å , c = 11.65 Å).
use
Titanium (III) phosphide is used as a catalyst in organic syntheses.
Individual evidence
- ↑ a b c d e f g h Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1383.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1462-7 , pp. 488 ( limited preview in Google Book search).