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
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• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Gas phase 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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Phase change 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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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References

Go To: Top, Gas phase thermochemistry data, Phase change data, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Ditter, Perrine, et al., 1961
Ditter, J.F.; Perrine, J.C.; Shapiro, Isadore, Vapor Pressure of Deuterodiborane., J. Chem. Eng. Data, 1961, 6, 2, 271-271, https://doi.org/10.1021/je60010a026 . [all data]

Paridon, MacWood, et al., 1959
Paridon, Leo J.; MacWood, George E.; Hu, Jih-Heng, The Heat of Vaporization of Diborane, J. Phys. Chem., 1959, 63, 12, 1998-1999, https://doi.org/10.1021/j150582a004 . [all data]

Ditter, Perrine, et al., 1961, 2
Ditter, J.F.; Perrine, J.C.; Shapiro, I., Vapor Pressure of Deuterodiborane, J. Chem. Eng. Data, 1961, 6, 2, 271, https://doi.org/10.1021/je60010a026 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔvapH	Enthalpy of vaporization

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