Sodium phosphide

Crystal structure
Na + : __   / P 3− : __
General
Surname	Sodium phosphide
other names	Trisodium phosphide
Ratio formula	Na 3 P
Brief description	red solid
External identifiers / databases
CAS number 12058-85-4 EC number 235-031-0 ECHA InfoCard 100,031,834 PubChem 61547 Wikidata Q2627447
properties
Molar mass	99.94 g mol −1
Physical state	firmly
density	1.74 g cm −3
Melting point	650 ° C (decomposition)
solubility	Decomposes in water
safety instructions
GHS hazard labeling no classification available
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

1. ↑ ^{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).
2. ↑ ^{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.
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

Web links

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