Chemistry:Lithium arsenide
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Litium monoarsenide
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3D model (JSmol)
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CompTox Dashboard (EPA)
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| Properties | |
| AsLi3 | |
| Molar mass | 95.74 g·mol−1 |
| Appearance | red-brown |
| Density | 3.71 g/cm3 |
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 arsenide describes inorganic compounds with the chemical formula LixAs where x can range from about 0.5 to 3. A common derivative is Li3As, which is prepared by the reduction of arsenic with a solution of lithium in ammonia.[1] It can also be produced by heating the elements.[2]
- 3 Li + As → Li3As
Other lithium arsenides
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![Chain of As atoms in LiAs. The As-As distances are about 245 pm.,[3]](/wiki/images/thumb/7/7b/26472-ICSD.png/120px-26472-ICSD.png)
Chain of As atoms in LiAs. The As-As distances are about 245 pm.,[3] -
![structure of As73- cage in Li3As7.[4]](/wiki/images/thumb/b/b5/As7_3-.svg/120px-As7_3-.svg.png)
structure of As73- cage in Li3As7.[4]
![Chain of As atoms in LiAs. The As-As distances are about 245 pm.,[3]](/wiki/File:26472-ICSD.png)
![structure of As73- cage in Li3As7.[4]](/wiki/File:As7_3-.svg)
The arsenic-rich arsenides are often classified as zintl phases.
- Lithium monoarsenide (LiAs) forms monoclinic crystals, space group P21/c,[3] cell parameters a = 0.579 nm, b = 0.524 nm, c = 1.070 nm, β = 117.4°, Z = 8.[6]
References
- ↑ 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.
- ↑ 3.0 3.1 Donnay, Joseph Désiré Hubert (1963) (in en). Crystal Data; Determinative Tables. American Crystallographic Association. p. 211. https://books.google.com/books?id=x5ghAQAAMAAJ&dq=Lithium+arsenide+LiAs&pg=PA211. Retrieved 13 January 2022.
- ↑ 4.0 4.1 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.
- ↑ "Materials Data on Li3As7 by Materials Project". LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). 2014. doi:10.17188/1283621. https://www.osti.gov/biblio/1283621.
- ↑ Cromer, D. T. (1 January 1959). "The crystal structure of LiAs". Acta Crystallographica 12 (1): 36–41. doi:10.1107/S0365110X59000111. Bibcode: 1959AcCry..12...36C. http://scripts.iucr.org/cgi-bin/paper?S0365110X59000111. Retrieved 13 January 2022.
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