Chromium(II) silicide

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Chromium(II) silicide
Names
IUPAC name
Chromium(2+) silicide
Identifiers
3D model (
JSmol
)
ECHA InfoCard
 100.031.472 Edit this at Wikidata
EC Number
  • 234-633-0234-633-0
  • InChI=1S/Cr.2Si
    Key: CHXGWONBPAADHP-UHFFFAOYSA-N
  • [Si-]#[Si-].[Cr+2]
Properties
CrSi2
Molar mass 108.167 g/mol
Appearance white powder
Odor odorless
Density 4.91 g/cm3[1]
Melting point 1,490 °C (2,710 °F; 1,760 K)[1]
insoluble
Band gap 0.35 eV (indirect)[2]
-0.5×10−6 emu/g[3]
Structure[4]
Hexagonal, hP9
P6222, No. 180
a = 0.44268 nm, c = 0.63751 nm
3
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3[5]
REL (Recommended)
 TWA 0.5 mg/m3[5]
IDLH
(Immediate danger)
 250 mg/m3[5]
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 [77 °F], 100 kPa).

Chromium(II) silicide or chromium disilicide is an

thermoelectric semiconductor with an indirect bandgap of 0.35 eV.[2]

References

  1. ^
    ISBN 9781498754293
    .
  2. ^
    PMID 9997056
    .
  3. doi:10.1143/JPSJ.21.555
    .
  4. doi:10.1063/1.340168
    .
  5. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).


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