Sodium phosphide
Crystal structure | ||||||||||||||||
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Na + : __ / P 3− : __ | ||||||||||||||||
General | ||||||||||||||||
Surname | Sodium phosphide | |||||||||||||||
other names |
Trisodium phosphide |
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Ratio formula | Na 3 P | |||||||||||||||
Brief description |
red solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 99.94 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
1.74 g cm −3 |
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Melting point |
650 ° C (decomposition) |
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solubility |
Decomposes in water |
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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 . |
Sodium phosphide (more precisely trisodium phosphide ) is an inorganic chemical compound of sodium from the group of phosphides . In addition to Na 3 P, two other sodium phosphides are known: sodium diphosphide Na 2 P and Na 3 P 11 .
Extraction and presentation
Sodium phosphide can be obtained by reacting sodium and red phosphorus under argon .
properties
Sodium phosphide is an extremely air-sensitive red solid. It has a hexagonal crystal structure with the space group P 6 3 / mmc (space group no. 194) . This consists of two structural elements: a graphite-like NaP layer, which alternately contains Na + and P 3− and thus has a negative overall charge, and corrugated layers of Na + ions that separate the NaP layers from one another.
Individual evidence
- ↑ a b c d Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2011, ISBN 1-4398-1462-7 , pp. 488 ( limited preview in Google Book search).
- ↑ a b c Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 960.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.