Chemistry:Cobalt arsenide
From HandWiki
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| Other names
arsanylidynecobalt, cobalt monoarsenide
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3D model (JSmol)
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PubChem CID
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| Properties | |
| CoAs | |
| Molar mass | 133.85 |
| Appearance | solid |
| Density | 6.73 g/cm3 |
| Melting point | 916 °C (1,681 °F; 1,189 K) |
| Hazards | |
| GHS pictograms |  
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| GHS Signal word | Danger |
| H301, H331, H410 | |
| P261, P264, P270, P271, P273, P301+310, P304+340, P311, P321, P330, P391, P403+233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Cobalt arsenide is a binary inorganic compound of cobalt and arsenic with the chemical formula CoAs.[2][3] The compound occurs naturally as the mineral modderite.[4][5]
Physical properties
Cobalt arsenide crystallizes in the orthorhombic system, space group Pnam, parameter parameters a = 0.515 nm, b = 0.596 nm, c = 0.351 nm, Z = 4.
Cobalt arsenide is isostructural with FeAs.[6]
At approximately 6-8 GPa, single crystals of CoAs undergo a transformation to a lower-symmetry phase.[5]
Use
CoAs is used as a semiconductor and in photo optic applications.[7]
References
- ↑ "Cobalt arsenide" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/117908#section=Safety-and-Hazards.
- ↑ Lide, David R. (29 June 2004) (in en). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. pp. 4–53. ISBN 978-0-8493-0485-9. https://books.google.com/books?id=WDll8hA006AC&dq=cobalt+arsenide+CoAs&pg=SA4-PA68-IA1. Retrieved 20 January 2022.
- ↑ (in en) Toxic Substances Control Act (TSCA) Chemical Substance Inventory. U.S. Government Printing Office. 1979. p. 16. https://books.google.com/books?id=EwXoYmUt_B0C&dq=cobalt+arsenide&pg=RA1-PA22. Retrieved 20 January 2022.
- ↑ "Modderite Mineral Data". webmineral.com. http://www.webmineral.com/data/Modderite.shtml.
- ↑ 5.0 5.1 Gramsch, Stephen (December 2004). "Crystal Chemistry of Transition Metal Arsenides and the High Pressure Behavior of CoAs". https://www.researchgate.net/publication/253858166.
- ↑ Heyding, R. D.; Calvert, L. D. (1 May 1957). "Arsenides of Transition Metals: The Arsenides of Iron and Cobalt". Canadian Journal of Chemistry 35 (5): 449–457. doi:10.1139/v57-065. https://cdnsciencepub.com/doi/pdf/10.1139/v57-065. Retrieved 20 January 2022.
- ↑ "Cobalt(III) Arsenide" (in en). American Elements. https://www.americanelements.com/cobalt-iii-arsenide-27016-73-5.
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