Difluorooxosilane

• Formula: F₂OSi
• Molecular weight: 82.0817
• IUPAC Standard InChI: InChI=1S/F2OSi/c1-4(2)3 Copy

  
• IUPAC Standard InChIKey: KSMSUXMVDODGKV-UHFFFAOYSA-N Copy
• CAS Registry Number: 14041-22-6
• Chemical structure:
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• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • Ion clustering data
  • Vibrational and/or electronic energy levels
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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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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: F^- + F₂OSi = (F^- • F₂OSi)

References

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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]

Damrauer, Simon, et al., 1991
Damrauer, R.; Simon, R.; Krempp, M., Effect of Substituents on the Gas-Phase Acidity of Silanols, J. Am. Chem. Soc., 1991, 113, 12, 4431, https://doi.org/10.1021/ja00012a009 . [all data]

Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B., Trends in Gas Phase Fluoride Ion Affinities of the Main Group Oxyfluorides and Fluoride Sulfides. Fluoride Adducts of FAsO, FPO, FPO2, F2SiO, F4SO, FBO, F2SiS, FPS, FAsS, F2S2, and S2O., Inorg. Chem., 1987, 26, 24, 4018, https://doi.org/10.1021/ic00271a011 . [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

Notes

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• 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
  ΔrH°	Enthalpy of reaction at standard conditions

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