Disilicon carbide

• Formula: CSi₂
• Molecular weight: 68.1817
• CAS Registry Number: 12070-04-1
• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • 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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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 compiled as indicated in comments:
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, Gas phase 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.

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

Stearns and Kohl, 1973
Stearns, C.A.; Kohl, F.J., Mass spectrometric determination of the dissociation energies of gaseous Al₂, AlSi, and AlSiO, High Temp. Sci., 1973, 5, 113. [all data]

Guido and Gigli, 1973
Guido, M.; Gigli, G., Mass spectrometric study of the CeSiC molecules, J. Chem. Phys., 1973, 59, 3437. [all data]

Verhaegen, Stafford, et al., 1964
Verhaegen, G.; Stafford, F.E.; Drowart, J., Mass spectrometric study of the systems boron-carbon and boron-carbon-silicon, J. Chem. Phys., 1964, 40, 1622. [all data]

Drowart, DeMaria, et al., 1958
Drowart, J.; DeMaria, G.; Inghram, M.G., Thermodynamic study of SiC utilizing a mass spectrometer, J. Chem. Phys., 1958, 29, 1015. [all data]

Auwera-Mahieu, Peeters, et al., 1970
Auwera-Mahieu, A.V.; Peeters, R.; McIntyre, N.S.; Drowart, J., Mass spectrometric determination of dissociation energies of the borides and suicides of some transition metals, J. Chem. Soc. Faraday Trans., 1970, 66, 809. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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