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Silicon tetrafluoride

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Reaction thermochemistry data

Go To: Top, 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. 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

Fluorine anion + Silicon tetrafluoride = (Fluorine anion bullet Silicon tetrafluoride)

By formula: F- + F4Si = (F- bullet F4Si)

Quantity Value Units Method Reference Comment
Deltar>121.8 ± 2.1kJ/molN/AKawamata, Neigishi, et al., 1996gas phase; B
Deltar285. ± 21.kJ/molIMRBMurphy and Beauchamp, 1977gas phase; Fluoride Affinity: <BF3, >iPr2BF; B
Deltar251. ± 17.kJ/molIMRELarson and McMahon, 1985gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
Quantity Value Units Method Reference Comment
Deltar226. ± 17.kJ/molIMRELarson and McMahon, 1985gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B
Deltar210.kJ/molICRLarson and McMahon, 1984gas phase; switching reaction(F-)H2O, DG+-8. kJ/mol; 70 ARS/YAM; M

CN- + Silicon tetrafluoride = (CN- bullet Silicon tetrafluoride)

By formula: CN- + F4Si = (CN- bullet F4Si)

Quantity Value Units Method Reference Comment
Deltar114. ± 4.2kJ/molIMRELarson, Szulejko, et al., 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar130.J/mol*KN/ALarson, Szulejko, et al., 1988gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Quantity Value Units Method Reference Comment
Deltar76.6 ± 2.1kJ/molIMRELarson, Szulejko, et al., 1988gas phase; B,M

Chlorine anion + Silicon tetrafluoride = (Chlorine anion bullet Silicon tetrafluoride)

By formula: Cl- + F4Si = (Cl- bullet F4Si)

Quantity Value Units Method Reference Comment
Deltar97.9 ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar92.J/mol*KN/ALarson and McMahon, 1985gas phase; switching reaction,Thermochemical ladder(Cl-)t-C4H9OH, Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar70.3 ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B,M

C6H5NO2- + Silicon tetrafluoride = C6H5F4NO2Si-

By formula: C6H5NO2- + F4Si = C6H5F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar146. ± 8.4kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar64.9 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4FNO2- + Silicon tetrafluoride = C6H4F5NO2Si-

By formula: C6H4FNO2- + F4Si = C6H4F5NO2Si-

Quantity Value Units Method Reference Comment
Deltar138. ± 8.4kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar58.2 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4ClNO2- + Silicon tetrafluoride = C6H4ClF4NO2Si-

By formula: C6H4ClNO2- + F4Si = C6H4ClF4NO2Si-

Quantity Value Units Method Reference Comment
Deltar134. ± 8.4kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar50.2 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H7NO2- + Silicon tetrafluoride = C7H7F4NO2Si-

By formula: C7H7NO2- + F4Si = C7H7F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar146. ± 13.kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar65.3 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

p-Benzoquinone anion + Silicon tetrafluoride = C6H4F4O2Si-

By formula: C6H4O2- + F4Si = C6H4F4O2Si-

Quantity Value Units Method Reference Comment
Deltar100. ± 8.4kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar55.2 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4N2O4- + Silicon tetrafluoride = C6H4F4N2O4Si-

By formula: C6H4N2O4- + F4Si = C6H4F4N2O4Si-

Quantity Value Units Method Reference Comment
Deltar87.9 ± 4.2kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B
Quantity Value Units Method Reference Comment
Deltar17.6 ± 2.5kJ/molTDAsWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

F5Si- + Silicon tetrafluoride = F9Si2-

By formula: F5Si- + F4Si = F9Si2-

Quantity Value Units Method Reference Comment
Deltar40. ± 8.4kJ/molIMREHiraoka, Nasu, et al., 2000gas phase; B
Quantity Value Units Method Reference Comment
Deltar21.5kJ/molIMREHiraoka, Nasu, et al., 2000gas phase; B

C6H4FNO2- + Silicon tetrafluoride = C6H4F5NO2Si-

By formula: C6H4FNO2- + F4Si = C6H4F5NO2Si-

Quantity Value Units Method Reference Comment
Deltar52.3 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4ClNO2- + Silicon tetrafluoride = C6H4ClF4NO2Si-

By formula: C6H4ClNO2- + F4Si = C6H4ClF4NO2Si-

Quantity Value Units Method Reference Comment
Deltar49.0 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4FNO2- + Silicon tetrafluoride = C6H4F5NO2Si-

By formula: C6H4FNO2- + F4Si = C6H4F5NO2Si-

Quantity Value Units Method Reference Comment
Deltar52.3 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4ClNO2- + Silicon tetrafluoride = C6H4ClF4NO2Si-

By formula: C6H4ClNO2- + F4Si = C6H4ClF4NO2Si-

Quantity Value Units Method Reference Comment
Deltar56.9 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H7NO2- + Silicon tetrafluoride = C7H7F4NO2Si-

By formula: C7H7NO2- + F4Si = C7H7F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar63.6 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H7NO2- + Silicon tetrafluoride = C7H7F4NO2Si-

By formula: C7H7NO2- + F4Si = C7H7F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar65.7 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4N2O4- + Silicon tetrafluoride = C6H4F4N2O4Si-

By formula: C6H4N2O4- + F4Si = C6H4F4N2O4Si-

Quantity Value Units Method Reference Comment
Deltar30.1 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4N2O4- + Silicon tetrafluoride = C6H4F4N2O4Si-

By formula: C6H4N2O4- + F4Si = C6H4F4N2O4Si-

Quantity Value Units Method Reference Comment
Deltar34.3 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4NO3- + Silicon tetrafluoride = C6H4F4NO3Si-

By formula: C6H4NO3- + F4Si = C6H4F4NO3Si-

Quantity Value Units Method Reference Comment
Deltar57.3 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4BrNO2- + Silicon tetrafluoride = C6H4BrF4NO2Si-

By formula: C6H4BrNO2- + F4Si = C6H4BrF4NO2Si-

Quantity Value Units Method Reference Comment
Deltar47.3 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4BrNO2- + Silicon tetrafluoride = C6H4BrF4NO2Si-

By formula: C6H4BrNO2- + F4Si = C6H4BrF4NO2Si-

Quantity Value Units Method Reference Comment
Deltar49.0 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H4F3NO2- + Silicon tetrafluoride = C7H4F7NO2Si-

By formula: C7H4F3NO2- + F4Si = C7H4F7NO2Si-

Quantity Value Units Method Reference Comment
Deltar44.4 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C10H7NO2- + Silicon tetrafluoride = C10H7F4NO2Si-

By formula: C10H7NO2- + F4Si = C10H7F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar42.7 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H4F3NO2- + Silicon tetrafluoride = C7H4F7NO2Si-

By formula: C7H4F3NO2- + F4Si = C7H4F7NO2Si-

Quantity Value Units Method Reference Comment
Deltar40.2 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H4N2O2- + Silicon tetrafluoride = C7H4F4N2O2Si-

By formula: C7H4N2O2- + F4Si = C7H4F4N2O2Si-

Quantity Value Units Method Reference Comment
Deltar38.5 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C8H3F6NO2- + Silicon tetrafluoride = C8H3F10NO2Si-

By formula: C8H3F6NO2- + F4Si = C8H3F10NO2Si-

Quantity Value Units Method Reference Comment
Deltar30.5 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C8H9NO2- + Silicon tetrafluoride = C8H9F4NO2Si-

By formula: C8H9NO2- + F4Si = C8H9F4NO2Si-

Quantity Value Units Method Reference Comment
Deltar82.8 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C13H10O- + Silicon tetrafluoride = C13H10F4OSi-

By formula: C13H10O- + F4Si = C13H10F4OSi-

Quantity Value Units Method Reference Comment
Deltar92.0 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H4F3NO2- + Silicon tetrafluoride = C7H4F7NO2Si-

By formula: C7H4F3NO2- + F4Si = C7H4F7NO2Si-

Quantity Value Units Method Reference Comment
Deltar45.6 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C6H4NO3- + Silicon tetrafluoride = C6H4F4NO3Si-

By formula: C6H4NO3- + F4Si = C6H4F4NO3Si-

Quantity Value Units Method Reference Comment
Deltar58.2 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

C7H4N2O2- + Silicon tetrafluoride = C7H4F4N2O2Si-

By formula: C7H4N2O2- + F4Si = C7H4F4N2O2Si-

Quantity Value Units Method Reference Comment
Deltar39.7 ± 2.5kJ/molIMREWilliamson, Knighton, et al., 2001gas phase; at 150 C; B

References

Go To: Top, Reaction thermochemistry data, Notes

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

Kawamata, Neigishi, et al., 1996
Kawamata, H.; Neigishi, Y.; Kishi, R.; Iwata, S.; Nakajima, A.; Kaya, K., Photoelectron Spectroscopy of Silicon-Fluorine Binary Cluster Anions (SinFm-), J. Chem. Phys., 1996, 105, 13, 5369, https://doi.org/10.1063/1.472377 . [all data]

Murphy and Beauchamp, 1977
Murphy, M.K.; Beauchamp, J.L., Methyl and Fluorine Substituent Effects on the Gas Phase Lewis Acidities of Silanes by ICR Spectroscopy, J. Am. Chem. Soc., 1977, 99, 15, 4992, https://doi.org/10.1021/ja00457a017 . [all data]

Larson and McMahon, 1985
Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria, J. Am. Chem. Soc., 1985, 107, 766. [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]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ion cyclotron resonance halide-exchange equilibria, J. Phys. Chem., 1984, 88, 1083. [all data]

Larson, Szulejko, et al., 1988
Larson, J.W.; Szulejko, J.E.; McMahon, T.B., Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements., J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004 . [all data]

Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P., Hydration of CN-, NO2-, NO3-, and HO- in the gas phase, Can. J. Chem., 1971, 49, 3308. [all data]

Williamson, Knighton, et al., 2001
Williamson, D.H.; Knighton, W.B.; Grimsrud, E.P., Lewis acid-base interactions of SiF4 with molecular anions formed by electron capture reactions, Int. J. Mass Spectrom., 2001, 206, 1-2, 53-61, https://doi.org/10.1016/S1387-3806(00)00388-2 . [all data]

Hiraoka, Nasu, et al., 2000
Hiraoka, K.; Nasu, M.; Minamitsu, A.; Shimizu, A.; Yamabe, S., On the structure and stability of gas-phase cluster ions SiF3+(CO)(n), SiF3OH2+(SiF4)(n), SiF4H+(SiF4)(n), and F- (SiF4)(n), J. Phys. Chem. A, 2000, 104, 36, 8353-8359, https://doi.org/10.1021/jp000525d . [all data]


Notes

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