Chemistry:Chromium(II) silicide
From HandWiki
| Names | |
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| IUPAC name
Chromium(2+) silicide
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| Identifiers | |
3D model (JSmol)
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| EC Number |
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PubChem CID
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| 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
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Formula units (Z)
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3 |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 1 mg/m3[5] |
REL (Recommended)
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TWA 0.5 mg/m3[5] |
IDLH (Immediate danger)
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250 mg/m3[5] |
| Related compounds | |
Other cations
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Molybdenum disilicide Tungsten disilicide |
Related compounds
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Chromium(IV) silicide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
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
- ↑ 1.0 1.1 Haynes, William M., ed (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.57. ISBN 9781498754293.
- ↑ 2.0 2.1 Mattheiss, L. F. (1991). "Electronic structure ofCrSi2and related refractory disilicides". Physical Review B 43 (15): 12549–12555. doi:10.1103/PhysRevB.43.12549. PMID 9997056. Bibcode: 1991PhRvB..4312549M.
- ↑ Shinoda, Daizaburo; Asanabe, Sizuo (1966). "Magnetic Properties of Silicides of Iron Group Transition Elements". Journal of the Physical Society of Japan 21 (3): 555. doi:10.1143/JPSJ.21.555. Bibcode: 1966JPSJ...21..555S.
- ↑ Engström, Ingvar; Lönnberg, Bertil (1988). "Thermal expansion studies of the group IV‐VII transition‐metal disilicides". Journal of Applied Physics 63 (9): 4476–4484. doi:10.1063/1.340168. Bibcode: 1988JAP....63.4476E.
- ↑ 5.0 5.1 5.2 NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0141.html.
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