Cobalt monosilicide

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Cobalt monosilicide
MnSi lattice.png
Structures of left-handed and right-handed CoSi crystals (3 presentations, with different numbers of atoms per unit cell)
IUPAC name
Cobalt silicide
3D model (JSmol)
  • InChI=1S/Co.Si
  • [Si].[Co]
Molar mass 87.018 g/mol
Density 6.3 g/cm3
Melting point 1,415 °C; 2,579 °F; 1,688 K[2]
-0.44×10−6 emu/g[1]
Thermal conductivity 20 W/(m·K)[1]
P213 (No. 198), cP8
a = 0.4444(1) nm
Flash point Non-flammable
Related compounds
Other anions
Cobalt germanide
Other cations
Iron silicide
Manganese monosilicide
Related compounds
Cobalt disilicide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Cobalt monosilicide (CoSi) is an intermetallic compound, a silicide of cobalt. It is a diamagnetic semimetal[3] with an electrical resistivity of ca. 1 mOhm·cm.[1]


  1. ^ a b c Dutta, Paromita; Pandey, Sudhir K (10 April 2019). "Effects of correlations and temperature on the electronic structures and related physical properties of FeSi and CoSi: a comprehensive study". Journal of Physics: Condensed Matter. 31 (14): 145602. doi:10.1088/1361-648X/aafdce.
  2. ^ Gas, P.; d’Heurle, F. M. (1998). "Diffusion in silicides". In Beke, D. L. (ed.). Landolt-Börnstein - Group III Condensed Matter. Vol. 33A. Springer. pp. 1–38. doi:10.1007/10426818_13.
  3. ^ a b Stishov, Sergei M.; Petrova, Alla E. (2011). "Itinerant helimagnetic compound MnSi". Uspekhi Fizicheskikh Nauk. 181 (11): 1157. doi:10.3367/UFNr.0181.201111b.1157.