Cobalt triarsenide

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Crystal structure
Crystal structure of cobalt triarsenide
__ Co      __ As
General
Surname Cobalt triarsenide
Ratio formula CoAs 3
External identifiers / databases
CAS number 12256-04-1
Wikidata Q49474256
properties
Molar mass 283.70 g mol −1
Physical state

firmly

density

6.84 g cm −3

Melting point

942 ° C

safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cobalt triarsenide is a chemical compound of cobalt from the group of arsenides .

Occurrence

Cobalt triarsenide occurs naturally in the form of the mineral skutterudite .

Extraction and presentation

Cobalt triarsenide can be obtained by reacting cobalt with arsenic .

properties

Cobalt triarsenide has a cubic-disdodecahedral crystal structure with its own structure type with the space group Im 3 (space group no. 204) . It's a semiconductor. Template: room group / 204

Individual evidence

  1. ^ A b William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 58 ( limited preview in Google Book search).
  2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  3. ↑ Handbook of Inorganic Chemistry: Vol. 1.Abt. The elements of the sixth ... S. Hirzel, 1935, OCLC 809014271 , p. xiv ( limited preview in Google Book Search).
  4. ↑ N. Mandel, J. Donohue: The refinement of the crystal structure of skutterudite, CoAs3 . In: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry . tape 27 , 1971, p. 2288 , doi : 10.1107 / S0567740871005727 (English).
  5. ^ Terence E. Warner: Synthesis, Properties and Mineralogy of Important Inorganic Materials . John Wiley & Sons, 2012, ISBN 978-0-470-97602-9 , pp. 187 ( limited preview in Google Book search).
  6. ↑ Helmut Schrätze, Karl Ludwig Weiner: Mineralogie a textbook on a systematic basis . Walter de Gruyter, 1981, ISBN 3-11-006823-0 , p. 278 ( limited preview in Google Book search).