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Chromium(II) silicide

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Chromium(II) silicide
Names
IUPAC name Chromium(2+) silicide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.472 Edit this at Wikidata
EC Number
  • 234-633-0234-633-0
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/Cr.2SiKey: CHXGWONBPAADHP-UHFFFAOYSA-N
SMILES
  • #.
Properties
Chemical formula CrSi2
Molar mass 108.167 g/mol
Appearance white powder
Odor odorless
Density 4.91 g/cm
Melting point 1,490 °C (2,710 °F; 1,760 K)
Solubility in water insoluble
Band gap 0.35 eV (indirect)
Magnetic susceptibility (χ) -0.5×10 emu/g
Structure
Crystal structure Hexagonal, hP9
Space group P6222, No. 180
Lattice constant a = 0.44268 nm, c = 0.63751 nm
Formula units (Z) 3
Hazards
NIOSH (US health exposure limits):
PEL (Permissible) TWA 1 mg/m
REL (Recommended) TWA 0.5 mg/m
IDLH (Immediate danger) 250 mg/m
Related compounds
Other cations Molybdenum disilicide
Tungsten disilicide
Related compounds Chromium(IV) silicide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Chromium(II) silicide or chromium disilicide is an inorganic compound of chromium and silicon. Its chemical formula is CrSi2. It is a p-type thermoelectric semiconductor with an indirect bandgap of 0.35 eV.

References

  1. ^ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.57. ISBN 9781498754293.
  2. ^ Mattheiss, L. F. (1991). "Electronic structure ofCrSi2and related refractory disilicides". Physical Review B. 43 (15): 12549–12555. Bibcode:1991PhRvB..4312549M. doi:10.1103/PhysRevB.43.12549. PMID 9997056.
  3. Shinoda, Daizaburo; Asanabe, Sizuo (1966). "Magnetic Properties of Silicides of Iron Group Transition Elements". Journal of the Physical Society of Japan. 21 (3): 555. Bibcode:1966JPSJ...21..555S. doi:10.1143/JPSJ.21.555.
  4. Engström, Ingvar; Lönnberg, Bertil (1988). "Thermal expansion studies of the group IV-VII transition-metal disilicides". Journal of Applied Physics. 63 (9): 4476–4484. Bibcode:1988JAP....63.4476E. doi:10.1063/1.340168.
  5. ^ NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).
Chromium compounds
Chromium(0)
Organochromium(0) compounds
  • Cr(C6H6)2
  • CrC6H6(CO)3
    • Chromium(I)
    Organochromium(I) compounds
    Chromium(II)
    Organochromium(II) compounds
    Chromium(II, III)
    Chromium(III)
    Chromium(IV)
    Chromium(V)
    Chromium(VI)
    Polyatomic ion


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