Informatics Educational Institutions & Programs
| Names | |
|---|---|
| IUPAC name
Chromium(2+) silicide
| |
| Identifiers | |
3D model (JSmol)
|
|
| ECHA InfoCard | 100.031.472 |
| EC Number |
|
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| |
| 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
| |
Formula units (Z)
|
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 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.[2]
References
- ^ a b Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.57. ISBN 9781498754293.
- ^ a b 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.
- ^ 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.
- ^ 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.
- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).
