Diborane

• Formula: B₂H₆
• Molecular weight: 27.670
• IUPAC Standard InChI: InChI=1S/B2H2/c1-3-2-4-1 Copy

  
• IUPAC Standard InChIKey: GCXMMZWJUYHRTG-UHFFFAOYSA-N Copy
• CAS Registry Number: 19287-45-7
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Diborane(6); Boron hydride (B2H6); Diboron hexahydride; Boroethane; Boron hydride; UN 1911; B2H6
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  = ( • )

By formula: H^- + H₆B₂ = (H^- • H₆B₂)

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Workman and Squires, 1988
Workman, D.B.; Squires, R.R., Hydride Binding Energies of Boranes, Inorg. Chem., 1988, 27, 11, 1846, https://doi.org/10.1021/ic00284a003 . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Ruscic, Mayhew, et al., 1988
Ruscic, B.; Mayhew, C.A.; Berkowitz, J., Photoionization studies of (BH₃)_n(n=1,2), J. Chem. Phys., 1988, 88, 5580. [all data]

Asbrink, Svensson, et al., 1981
Asbrink, L.; Svensson, A.; Von Niessen, W.; Bieri, G., 30.4 nm He(II) photoelectron spectra of organic molecules, J. Electron Spectrosc. Relat. Phenom., 1981, 24, 293. [all data]

Lloyd and Lynaugh, 1970
Lloyd, D.R.; Lynaugh, N., Photoelectron studies of boron compounds. I. Diborane, borazine and B-trifluoroborazine, Phil. Trans. Roy. Soc. (London), 1970, A268, 97. [all data]

Brundle, Robin, et al., 1970
Brundle, C.R.; Robin, M.B.; Basch, H.; Pinsky, M.; Bond, A., Experimental and theoretical comparison of the electronic structures of ethylene and diborane, J. Am. Chem. Soc., 1970, 92, 3863. [all data]

Rose, Frey, et al., ibid.
Rose, T.; Frey, R.; Brehm, B., The electronic states of the diborane ion determined by photoelectron spectroscopy, Chem. Commun. 1969,,1518; Erratum,, ibid., 1970, ,460. [all data]

Wilson and McGee, 1967
Wilson, J.H.; McGee, H.A., Jr., Mass-spectrometric studies of the synthesis, energetics, and cryogenic stability of the lower boron hydrides, J. Chem. Phys., 1967, 46, 1444. [all data]

Koski, Kaufman, et al., 1958
Koski, W.S.; Kaufman, J.J.; Pachucki, C.F.; Shipko, F.J., A mass spectrometric appearance potential study of isotopically labeled diboranes, J. Am. Chem. Soc., 1958, 80, 3202. [all data]

Margrave, 1957
Margrave, J.L., A mass spectrometric appearance potential study of diborane, J. Phys. Chem., 1957, 61, 38. [all data]

Fehlner and Koski, 1964
Fehlner, T.P.; Koski, W.S., The fragmentation of some boron hydrides by electron impact, J. Am. Chem. Soc., 1964, 86, 581. [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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