Cobalt(II) selenide

Cobalt(II) selenide is an inorganic compound with the chemical formula CoSe.[3] The mineral form of this compound is known as freboldite.[4][5] Similar minerals include trogtalite (CoSe2)[6][7] and bornhardtite (Co2+Co3+2Se4).[8][9]

Cobalt(II) selenide
Names
IUPAC name
Cobalt(II) selenide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.013.778
EC Number
  • 215-155-1
  • InChI=1S/Co.Se
    Key: QVYIMIJFGKEJDW-UHFFFAOYSA-N
  • [Co]=[Se]
Properties
CoSe
Molar mass 137.89 g/mol[1]
Density 7.65 g/cm3[1]
Melting point 1,055 °C (1,931 °F; 1,328 K)[1]
Insoluble[1]
Structure[2]
Hexagonal (NiAs), hP4
P63/mmc, No. 194
a = 0.362 nm, b = 0.362 nm, c = 0.52 nm
α = 90°, β = 90°, γ = 120°
2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.59. ISBN 9781498754293.
  2. Kamimura, T.; Sato, M.; Takahashi, H.; Mori, N.; Yoshida, H.; Kaneko, T. (1992). "Pressure-induced phase transition in Fe-Se and Fe-S systems with a Ni As-type structure". Journal of Magnetism and Magnetic Materials. 104–107: 255–256. Bibcode:1992JMMM..104..255K. doi:10.1016/0304-8853(92)90787-O.
  3. University of Akron Chemical Database Archived 2012-12-15 at archive.today
  4. "Freboldite".
  5. "List of Minerals". 21 March 2011.
  6. "Trogtalite".
  7. "List of Minerals". 21 March 2011.
  8. "Bornhardtite".
  9. "List of Minerals". 21 March 2011.
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