Lithium arsenide

Lithium arsenide
Names
	Other names Litium monoarsenide
Identifiers
CAS Number	12044-22-3 ;
PubChem CID	82878;
	InChI InChI=1S/As.Li Key: FKQOMXQAEKRXDM-UHFFFAOYSA-N;
Properties
Chemical formula	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). 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 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

Chain of As atoms in LiAs. The As-As distances are about 245 pm.,^[3]
structure of As₇^3- cage in Li₃As₇.^[4]

The arsenic-rich arsenides are often classified as zintl phases.

Li₃As₇ adopts a structure akin to the heptaphosphide.^[4]^[5]

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]

10.1107/S0365110X59000111^{[clarification needed]}

References

^ 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.
^ 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.
^ ^a ^b Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 211. Retrieved 13 January 2022.
^ ^a ^b 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.
^ None Available (2014). "Materials Data on Li3As7 by Materials Project". LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). doi:10.17188/1283621. OSTI 1283621.
^ Cromer, D. T. (1 January 1959). "The crystal structure of LiAs". Acta Crystallographica. 12 (1): 36–41. Bibcode:1959AcCry..12...36C. doi:10.1107/S0365110X59000111. Retrieved 13 January 2022.

[Brauer-1] 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.

[2] 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.

[Donnay-3] Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 211. Retrieved 13 January 2022.

[Schnering-4] 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.

[5] None Available (2014). "Materials Data on Li3As7 by Materials Project". LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). doi:10.17188/1283621. OSTI 1283621.

[6] Cromer, D. T. (1 January 1959). "The crystal structure of LiAs". Acta Crystallographica. 12 (1): 36–41. Bibcode:1959AcCry..12...36C. doi:10.1107/S0365110X59000111. Retrieved 13 January 2022.

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