Boron triiodide

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]

Boron triiodide[1]
Names
IUPAC name
triiodoborane
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.492
RTECS number
  • ED7400000
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
0D
Structure
trigonal
Thermochemistry
71 J/mol K
200 J/mol K
Std enthalpy of
formation (ΔfH⦵298)
 -37.2 kJ/mol
Hazards
Safety data sheet Sigma-Aldrich
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
3
0
Flash point −18 °C (0 °F; 255 K)
Related compounds
Related compounds
 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

Preparation

Boron triiodide can be prepared by the reaction of boron with iodine at 209.5 °C or 409.1 °F. It can also be prepared by this other method: (this reaction requires high temperature).

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References
  1. Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  2. http://www.sciencemadness.org/talk/files.php?pid=110072&aid=4171
  3. 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.
  • MSDS (link is broken)
Salts and covalent derivatives of the iodide ion
HI He
LiI BeI2 BI3 CI4 NI3 I2O4,
I2O5,
I4O9		 IF,
IF3,
IF5,
IF7		 Ne
NaI MgI2 AlI3 SiI4 PI3,
P2I4		 S ICl,
ICl3		 Ar
KI CaI2 Sc TiI4 VI3 CrI3 MnI2 FeI2 CoI2 NiI2 CuI ZnI2 Ga2I6 GeI2,
GeI4		 AsI3 Se IBr Kr
RbI SrI2 YI3 ZrI4 NbI5 Mo Tc Ru Rh Pd AgI CdI2 InI3 SnI4,
SnI2		 SbI3 TeI4 I Xe
CsI BaI2   HfI4 TaI5 W Re Os Ir Pt AuI Hg2I2,
HgI2		 TlI PbI2 BiI3 Po AtI Rn
Fr RaI2   Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
↓
La Ce Pr Nd Pm SmI2 Eu Gd TbI3 Dy Ho Er Tm Yb Lu
Ac ThI4 Pa UI3,
UI4		 Np Pu Am Cm Bk Cf EsI3 Fm Md No Lr
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