Trimethylstibine

Trimethylstibine is an organoantimony compound with the formula Sb(CH3)3. It is a colorless pyrophoric and toxic liquid.[2] It is synthesized by treatment of antimony trichloride and methyl Grignard reagent.[3] It is produced by anaerobic bacteria in antimony-rich soils.[4] In contrast to trimethylphosphine, trimethylstibine is a weaker Lewis base. It is used in the production of some III-V semiconductors.

Trimethylstibine
Names
Systematic IUPAC name
Trimethylstibane[1]
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.933
EC Number
  • 209-824-7
MeSH trimethylantimony
Properties
C
3SbH
9
Molar mass 166.86 g mol−1
Appearance Colourless liquid
Density 1.523 g cm−3 (at 15°C)
Melting point −62 °C (−80 °F; 211 K)
Boiling point 81 °C (178 °F; 354 K)
Thermochemistry
Std enthalpy of
formation (ΔfH⦵298)
 24-26 kJ mol−1
Std enthalpy of
combustion (ΔcH⦵298)
 -2.896--2.946 MJ mol−1
Related compounds
Related compounds
 Trimethylamine
Trimethylphosphine
Trimethylarsine
Triphenylstibine
Trimethylbismuth
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

References
  1. "trimethylantimony - PubChem Public Chemical Database". The PubChem Project. USA: National Center for Biotechnology Information. 26 March 2005. Descriptors Computed from Structure. Retrieved 25 September 2011.
  2. Wiberg, Nils; Wiberg, Egon; Holleman, A. F. (2001), Inorganic Chemistry, Academic Press, p. 766, ISBN 0-12-352651-5, retrieved 2009-07-17
  3. Sabina C. Grund, Kunibert Hanusch, Hans J. Breunig, Hans Uwe Wolf "Antimony and Antimony Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2006, Wiley-VCH, Weinheim. doi:10.1002/14356007.a03_055.pub2
  4. Craig, P. J. (2003), Organometallic Compounds in the Environment (2 ed.), Wiley and Sons, p. 295, ISBN 978-0-471-89993-8, retrieved 2009-07-17


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