Lithium phosphide
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| Other names
Trilithium phosphide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.031.824 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Li3P | |
| Molar mass | 51.79 g·mol−1 |
| Appearance | Red-brown crystals |
| Density | 1.43 |
| Structure | |
| cubic | |
| Related compounds | |
Other cations
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Scandium phosphide Lanthanum phosphide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lithium phosphide is an inorganic compound of lithium and phosphorus with the chemical formula Li
3P. This dark colored compound is formally the Li+ salt of P3-. It is a hazardous to handle because of its high reactivity toward air.[1]
Synthesis[edit]
Heating red phosphorus and lithium in an argon atmosphere:[1]
- 12Li + P4 → 4Li3P
Reaction of monolithium phosphide and lithium:
- LiP + 2Li → Li3P
Physical and chemical properties[edit]
Lithium phosphide forms red-brown crystals of hexagonal systems, space group P63/mmc,[2] cell parameters a = 0.4264 nm, c = 0.7579 nm, Z = 2.[3][4]
The compound react with water to release phosphine:[5]
- Li3P + 3H2O → 3LiOH + PH3
Uses[edit]
The compound is proposed to be used as a potential electrolyte for solid-state devices.[6]
Related compounds[edit]
Reaction of lithium with red phosphorus at 870 °C gives Li3P7.[7]
Further reading[edit]
- Nazri, Gholamabbas (1 April 1989). "Preparation, structure and ionic conductivity of lithium phosphide". Solid State Ionics. 34 (1–2): 97–102. doi:10.1016/0167-2738(89)90438-4.
Safety[edit]
Alkali metal phosphides are dangerous compounds when exposed to oxygen or moisture.[8]
References[edit]
- ^ a b E. Donges (1963). "Phosphides, Arsenides, Antimonides and Bismuthides of Alkali Metals from the Elements". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 985.
- ^ "mp-736: Li3P (hexagonal, P6_3/mmc, 194)". materialsproject.org. Retrieved 10 December 2021.
- ^ Seel, Max; Pandey, Ravi (1990). "Band Structure and Electronic Properties of Lithium Phosphide Li3P". MRS Proceedings. 210. doi:10.1557/PROC-210-155. Retrieved 10 December 2021.
- ^ Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 765. Retrieved 10 December 2021.
- ^ Dong, Yongkwan; DiSalvo, Francis J. (15 April 2007). "Reinvestigation of trilithium phosphide, Li 3 P". Acta Crystallographica Section E. 63 (4): i97–i98. doi:10.1107/S1600536807008422.
- ^ Wan, Chaoying; Huang, Xingyi; Bowen, Chris (23 June 2021). Two-dimensional Inorganic Nanomaterials for Conductive Polymer Nanocomposites. Royal Society of Chemistry. ISBN 978-1-83916-260-2. Retrieved 10 December 2021.
- ^ Manriquez, V.; Hönle, W.; von Schnering, H. G. (1986). "Zur Chemie und Strukturchemie von Phosphiden und Polyphosphiden. 42. Trilithiumheptaphosphid Li3P7: Darstellung, Struktur und Eigenschaften". Zeitschrift für Anorganische und Allgemeine Chemie. 539 (8): 95–109. doi:10.1002/zaac.19865390810.
- ^ Toxic Substances Control Act (TSCA) Chemical Substance Inventory. U.S. Government Printing Office. 1979. p. 9. Retrieved 10 December 2021.