Borane

Borane
Structural formula of borane
Ball-and-stick model of borane
Spacefill model of borane
Names
IUPAC names
Borane[1]
Systematic IUPAC name
Borane (substitutive)
Trihydridoboron (additive)
Other names
  • borine
  • boron trihydride
  • hydrogen boride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
44
  • InChI=1S/BH3/h1H3
    Key: UORVGPXVDQYIDP-UHFFFAOYSA-N
  • B
Properties
BH3
Molar mass 13.83 g·mol−1
Appearance colourless gas
Conjugate acid Boronium
Thermochemistry
187.88 kJ mol−1 K−1
106.69 kJ mol−1
Structure
D3h
trigonal planar
0 D
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Borane, also known as borine, is an unstable and highly reactive molecule with the chemical formula BH
3
. The preparation of borane carbonyl, BH3(CO), played an important role in exploring the chemistry of boranes, as it indicated the likely existence of the borane molecule.[2] However, the molecular species BH3 is a very strong Lewis acid. Consequently, it is highly reactive and can only be observed directly as a continuously produced, transitory, product in a flow system or from the reaction of laser ablated atomic boron with hydrogen.[3] It normally dimerizes to diborane in the absence of other chemicals.[4]

  1. ^ "Borane".
  2. ^ Burg, Anton B.; Schlesinger, H. I. (May 1937). "Hydrides of boron. VII. Evidence of the transitory existence of borine (BH
    3
    ): Borine carbonyl and borine trimethylammine". Journal of the American Chemical Society. 59 (5): 780–787. doi:10.1021/ja01284a002.
  3. ^ Tague, Thomas J.; Andrews, Lester (1994). "Reactions of Pulsed-Laser Evaporated Boron Atoms with Hydrogen. Infrared Spectra of Boron Hydride Intermediate Species in Solid Argon". Journal of the American Chemical Society. 116 (11): 4970–4976. doi:10.1021/ja00090a048. ISSN 0002-7863.
  4. ^ Carey, Francis A.; Sundberg, Richard J. (2007). Advanced Organic Chemistry: Part B: Reactions and Synthesis (5th ed.). New York: Springer. p. 337. ISBN 978-0387683546.