Chemistry:Lithium arsenide
From HandWiki
| Names | |
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| Other names
Litium monoarsenide
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3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
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| Molar mass |
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| Appearance | red-brown |
| Density | 3.71 g/cm3[citation needed] |
| Structure(LiAs)[1] | |
| Monoclinic | |
| P21/n | |
a = 9.54 Å, b = 5.24 Å, c = 5.79 Å α = 90°, β = 95.267°, γ = 90°
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Formula units (Z)
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8 |
| Structure(Low Temperature Li3As7)[2] | |
| Orthorhombic | |
| Pbca | |
a = 12.466 Å, b = 22.489 Å, c = 12.592 Å α = 100.5°, β = 101.5°, γ = 104.5°
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Lattice volume (V)
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3530.1 Å3 |
Formula units (Z)
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16 |
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Other anions
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Other cations
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Lithium arsenide describes inorganic compounds with the chemical formula Li
xAs where x can range from about 0.5 to 3. A common derivative is Li
3As, which is prepared by the reduction of arsenic with a solution of lithium in ammonia.[3] It can also be produced by heating the elements.[4]
- 3 Li + As → Li
3As
Other lithium arsenides
![Chain of As atoms in LiAs. The As–As distances are about 2.45 Å[convert: invalid option].[1]](/wiki/File:26472-ICSD.png)
![structure of As3− 7 cage in Li 3As 7.[2]](/wiki/File:As7_3-.svg)
The arsenic-rich arsenides are often classified as zintl phases.[citation needed]
References
- ↑ 1.0 1.1 Donnay, Joseph Désiré Hubert (1963) (in en). Crystal Data; Determinative Tables. American Crystallographic Association. p. 211. https://babel.hathitrust.org/cgi/pt?id=uc1.l0063993380&seq=223. Retrieved 27 January 2026.
- ↑ 2.0 2.1 Hönle, W.; Buresch, J.; Peters, K.; Chang, J. H.; Schnering, H. G. von (2002). "Crystal Structure of the Low-Temperature Modification of Trilithium Heptaarsenide, LT-Li3As7". Zeitschrift für Kristallographie - New Crystal Structures 217: 485–486. doi:10.1524/ncrs.2002.217.jg.485.
- ↑ E. Donges (1963). "Phosphides, Arsenides, Antimonides and Bismuthides of Alkali Metals from the Elements". in G. Brauer. Handbook of Preparative Inorganic Chemistry, 2nd Ed.. 2. NY, NY: Academic Press. p. 985.
- ↑ Wegner, Florian; Kamm, Franziska; Pielnhofer, Florian; Pfitzner, Arno (2022). "Li3As and Li3P revisited: DFT modelling on phase stability and ion conductivity". Zeitschrift für Anorganische und Allgemeine Chemie 648 (11). doi:10.1002/zaac.202100358.
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