Molybdenum diarsenide

Molybdenum diarsenide

Identifiers
CAS Number	2006-24-5
3D model (JSmol)	Interactive image
InChI InChI=1S/2As.Mo Key: SUNOQBBRKUWPGB-UHFFFAOYSA-N
SMILES [Mo].[As].[As]
Properties
Chemical formula	As2Mo
Molar mass	245.79 g·mol^−1
Appearance	black solid[1]
Density	8.07 g·cm^−3[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Molybdenum diarsenide is an arsenide of molybdenum, with the chemical formula MoAs₂. Other arsenides of molybdenum are Mo₂As₃ and Mo₅As₄.^[2][3]

Preparation

Molybdenum diarsenide can be prepared by the reaction of molybdenum and arsenic at 570 °C.^[1]

Properties

Molybdenum diarsenide is a black solid,^[1] and is a superconductor at 0.41 K.^[4] It crystallises in the monoclinic crystal system, with space group (No. 12).^[5] It has the same structure as molybdenum diphosphide. It is insoluble in concentrated hydrochloric acid or hydrogen peroxide, but easily soluble in nitric acid, hot concentrated sulfuric acid and aqua regia.^[6]

References

1. "Molybdenum Arsenide, MoAs2". arsenic.atomistry.com. Retrieved 2023-07-01.
2. Murray, J.J.; Taylor, J.B.; Usner, L. (Aug 1972). "Halogen transport of molybdenum arsenides and other transition metal pnictides". Journal of Crystal Growth. 15 (3): 231–239. Bibcode:1972JCrGr..15..231M. doi:10.1016/0022-0248(72)90123-6.
3. Taylor, J. B.; Calvert, L. D.; Hunt, M. R. (1965-11-01). "The Arsenides of Tungsten and Molybdenum: WAs₂, W₂As₃, MoAs₂, Mo₂As₃, and Mo₅As₄". Canadian Journal of Chemistry. 43 (11): 3045–3051. doi:10.1139/v65-419. ISSN 0008-4042.
4. Jane E. Macintyre (1994). Dictionary of Inorganic Compounds, Supplement 2. CRC Press. p. 6. ISBN 978-0-412-49100-9.
5. Wang, Jialu; Li, Lin; You, Wei; Wang, Tingting; Cao, Chao; Dai, Jianhui; Li, Yuke (2017-11-15). "Magnetoresistance and robust resistivity plateau in MoAs2". Scientific Reports. 7 (1): 15669. arXiv:1610.08594. Bibcode:2017NatSR...715669W. doi:10.1038/s41598-017-15962-w. ISSN 2045-2322. PMC 5688174. PMID 29142314.
6. Reece H. Vallance (1938). J. Newton Friend (ed.). A Text Book Of Inorganic Chemistry Volume VI Part IV Arsenic. Charles Griffin. pp. 71–72.