Boron triiodide
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Names | |||
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IUPAC name
triiodoborane
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Identifiers | |||
3D model (JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.033.492 ![]() | ||
PubChem CID
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RTECS number |
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CompTox Dashboard (EPA)
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Properties | |||
BI3 | |||
Molar mass | 391.52 g/mol | ||
Appearance | crystalline solid | ||
Density | 3.35 g/cm3 (50 °C) | ||
Melting point | 49.9 °C (121.8 °F; 323.0 K) | ||
Boiling point | 210 °C (410 °F; 483 K) | ||
soluble,hydrolysis | |||
Solubility | soluble in CCl4, CS2, benzene, chloroform | ||
Dipole moment
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0D | ||
Structure | |||
trigonal | |||
Thermochemistry | |||
Heat capacity (C)
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71 J/mol K | ||
Std molar
entropy (S |
200 J/mol K | ||
Std enthalpy of
formation (ΔfH⦵298) |
-37.2 kJ/mol | ||
Hazards | |||
Safety data sheet | Sigma-Aldrich | ||
NFPA 704 (fire diamond) | ![]()
3
0
0 | ||
Flash point | −18 °C (0 °F; 255 K) | ||
Related compounds | |||
Related compounds
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Boron trifluoride Boron trichloride Boron tribromide | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
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Infobox references | |||
Boron triiodide is a chemical compound of boron and iodine with chemical formula BI3. It has a trigonal planar molecular geometry. It is a crystalline solid, which reacts vigorously with water to form hydroiodic acid and boric acid.[2] Its dielectric constant is 5.38 and its heat of vaporization is 40.5 kJ/mol. At extremely high pressures, BI3 becomes metallic at ~23 GPa and is a superconductor above ~27 GPa. [3]
Preparation[]
Boron triiodide can be prepared by the reaction of boron with iodine at 209.5 °C or 409.1 °F.[citation needed] It can also be prepared by this other method: (this reaction requires high temperature).
References[]
- ^ Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
- ^ http://www.sciencemadness.org/talk/files.php?pid=110072&aid=4171
- ^ Hamaya, Nozomu; Ishizuka, Miyuki; Onoda, Suzue; Guishan, Jiang; Ohmura, Ayako; Shimizu, Katsuya (2010). "Pressure-induced phase transition, metallization, and superconductivity in boron triiodide". Physical Review B. 82 (9): 094506. Bibcode:2010PhRvB..82i4506H. doi:10.1103/PhysRevB.82.094506.
External links[]
- MSDS (link is broken)
Categories:
- Boron compounds
- Iodides
- Boron halides