Silicon tetrafluoride

• Formula: F₄Si
• Molecular weight: 104.0791
• IUPAC Standard InChI: InChI=1S/F4Si/c1-5(2,3)4 Copy

  
• IUPAC Standard InChIKey: ABTOQLMXBSRXSM-UHFFFAOYSA-N Copy
• CAS Registry Number: 7783-61-1
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Silane, tetrafluoro-; Silicon fluoride (SiF4); Tetrafluorosilane; SiF4; Silicon fluoride; UN 1859
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Vibrational and/or electronic energy levels
• Data at other public NIST sites:
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
• Options:
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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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View table.

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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Antoine Equation Parameters

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

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Enthalpy of sublimation

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^- + F₄Si = (F^- • F₄Si)

CN^- +  = (CN^- • )

By formula: CN^- + F₄Si = (CN^- • F₄Si)

 +  = ( • )

By formula: Cl^- + F₄Si = (Cl^- • F₄Si)

C₆H₅NO₂^- +  = C₆H₅F₄NO₂Si^-

By formula: C₆H₅NO₂^- + F₄Si = C₆H₅F₄NO₂Si^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

 +  = C₆H₄F₄O₂Si^-

By formula: C₆H₄O₂^- + F₄Si = C₆H₄F₄O₂Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

F₅Si^- +  = F₉Si₂^-

By formula: F₅Si^- + F₄Si = F₉Si₂^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

C₆H₄NO₃^- +  = C₆H₄F₄NO₃Si^-

By formula: C₆H₄NO₃^- + F₄Si = C₆H₄F₄NO₃Si^-

C₆H₄BrNO₂^- +  = C₆H₄BrF₄NO₂Si^-

By formula: C₆H₄BrNO₂^- + F₄Si = C₆H₄BrF₄NO₂Si^-

C₆H₄BrNO₂^- +  = C₆H₄BrF₄NO₂Si^-

By formula: C₆H₄BrNO₂^- + F₄Si = C₆H₄BrF₄NO₂Si^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₁₀H₇NO₂^- +  = C₁₀H₇F₄NO₂Si^-

By formula: C₁₀H₇NO₂^- + F₄Si = C₁₀H₇F₄NO₂Si^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₇H₄N₂O₂^- +  = C₇H₄F₄N₂O₂Si^-

By formula: C₇H₄N₂O₂^- + F₄Si = C₇H₄F₄N₂O₂Si^-

C₈H₃F₆NO₂^- +  = C₈H₃F₁₀NO₂Si^-

By formula: C₈H₃F₆NO₂^- + F₄Si = C₈H₃F₁₀NO₂Si^-

C₈H₉NO₂^- +  = C₈H₉F₄NO₂Si^-

By formula: C₈H₉NO₂^- + F₄Si = C₈H₉F₄NO₂Si^-

C₁₃H₁₀O^- +  = C₁₃H₁₀F₄OSi^-

By formula: C₁₃H₁₀O^- + F₄Si = C₁₃H₁₀F₄OSi^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₆H₄NO₃^- +  = C₆H₄F₄NO₃Si^-

By formula: C₆H₄NO₃^- + F₄Si = C₆H₄F₄NO₃Si^-

C₇H₄N₂O₂^- +  = C₇H₄F₄N₂O₂Si^-

By formula: C₇H₄N₂O₂^- + F₄Si = C₇H₄F₄N₂O₂Si^-

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:
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Proton affinity at 298K

Gas basicity at 298K

Protonation entropy at 298K

Ionization energy determinations

Appearance energy determinations

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes

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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

CN^- +  = (CN^- • )

By formula: CN^- + F₄Si = (CN^- • F₄Si)

C₆H₄BrNO₂^- +  = C₆H₄BrF₄NO₂Si^-

By formula: C₆H₄BrNO₂^- + F₄Si = C₆H₄BrF₄NO₂Si^-

C₆H₄BrNO₂^- +  = C₆H₄BrF₄NO₂Si^-

By formula: C₆H₄BrNO₂^- + F₄Si = C₆H₄BrF₄NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₆H₄ClNO₂^- +  = C₆H₄ClF₄NO₂Si^-

By formula: C₆H₄ClNO₂^- + F₄Si = C₆H₄ClF₄NO₂Si^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄FNO₂^- +  = C₆H₄F₅NO₂Si^-

By formula: C₆H₄FNO₂^- + F₄Si = C₆H₄F₅NO₂Si^-

C₆H₄NO₃^- +  = C₆H₄F₄NO₃Si^-

By formula: C₆H₄NO₃^- + F₄Si = C₆H₄F₄NO₃Si^-

C₆H₄NO₃^- +  = C₆H₄F₄NO₃Si^-

By formula: C₆H₄NO₃^- + F₄Si = C₆H₄F₄NO₃Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

C₆H₄N₂O₄^- +  = C₆H₄F₄N₂O₄Si^-

By formula: C₆H₄N₂O₄^- + F₄Si = C₆H₄F₄N₂O₄Si^-

 +  = C₆H₄F₄O₂Si^-

By formula: C₆H₄O₂^- + F₄Si = C₆H₄F₄O₂Si^-

C₆H₅NO₂^- +  = C₆H₅F₄NO₂Si^-

By formula: C₆H₅NO₂^- + F₄Si = C₆H₅F₄NO₂Si^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₇H₄F₃NO₂^- +  = C₇H₄F₇NO₂Si^-

By formula: C₇H₄F₃NO₂^- + F₄Si = C₇H₄F₇NO₂Si^-

C₇H₄N₂O₂^- +  = C₇H₄F₄N₂O₂Si^-

By formula: C₇H₄N₂O₂^- + F₄Si = C₇H₄F₄N₂O₂Si^-

C₇H₄N₂O₂^- +  = C₇H₄F₄N₂O₂Si^-

By formula: C₇H₄N₂O₂^- + F₄Si = C₇H₄F₄N₂O₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

C₇H₇NO₂^- +  = C₇H₇F₄NO₂Si^-

By formula: C₇H₇NO₂^- + F₄Si = C₇H₇F₄NO₂Si^-

C₈H₃F₆NO₂^- +  = C₈H₃F₁₀NO₂Si^-

By formula: C₈H₃F₆NO₂^- + F₄Si = C₈H₃F₁₀NO₂Si^-

C₈H₉NO₂^- +  = C₈H₉F₄NO₂Si^-

By formula: C₈H₉NO₂^- + F₄Si = C₈H₉F₄NO₂Si^-

C₁₀H₇NO₂^- +  = C₁₀H₇F₄NO₂Si^-

By formula: C₁₀H₇NO₂^- + F₄Si = C₁₀H₇F₄NO₂Si^-

C₁₃H₁₀O^- +  = C₁₃H₁₀F₄OSi^-

By formula: C₁₃H₁₀O^- + F₄Si = C₁₃H₁₀F₄OSi^-

 +  = ( • )

By formula: Cl^- + F₄Si = (Cl^- • F₄Si)

 +  = ( • )

By formula: F^- + F₄Si = (F^- • F₄Si)

F₅Si^- +  = F₉Si₂^-

By formula: F₅Si^- + F₄Si = F₉Si₂^-

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes

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

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Notes

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

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Fehlner and Turner, 1974
Fehlner, T.P.; Turner, D.W., The photoelectron spectrum of SiF₂, Inorg. Chem., 1974, 13, 754. [all data]

Jonas, Schweitzer, et al., 1973
Jonas, A.E.; Schweitzer, G.K.; Grimm, F.A.; Carlson, T.A., The photoelectron spectra of the tetrafluoro and tetramethyl compounds of the group IV elements, J. Electron Spectrosc. Relat. Phenom., 1973, 1, 29. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  Pc	Critical pressure
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tboil	Boiling point
  Tc	Critical temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation

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