CF3SO3 anion
- Formula: CF3O3S-
- Molecular weight: 149.070
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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 by: John E. Bartmess
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| >5.299963 | LPD | Herd, Misth, et al., 1989 | No detachment with 5.49 eV photons |
| >4.90 ± 0.20 | IMRB | Viggiano, Paulson, et al., 1987 | ΔGacid: CF3SO3H<FSO3H<H2SO4<HPO3<HI, ΔGacid(CF3SO3H)<313.6 kcal |
Protonation reactions
CF3O3S- + = CHF3O3S
By formula: CF3O3S- + H+ = CHF3O3S
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 305.4 ± 2.2 | kcal/mol | G+TS | Koppel, Taft, et al., 1994 | gas phase; Per Leito, Raamat, et al., 2009, dGacid is likely too weak by at least 1.3 kcal/mol, and possibly 5.3, due to problems in the ladder at dGacid=299 |
| ΔrH° | <313.6 ± 2.0 | kcal/mol | EIAE | Adams, Smith, et al., 1986 | gas phase; From CF3SO3H,anhydride |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 299.5 ± 2.0 | kcal/mol | IMRE | Koppel, Taft, et al., 1994 | gas phase; Per Leito, Raamat, et al., 2009, dGacid is likely too weak by at least 1.3 kcal/mol, and possibly 5.3, due to problems in the ladder at dGacid=299 |
| ΔrG° | 298.8 ± 2.5 | kcal/mol | IMRB | Viggiano, Henchman, et al., 1992 | gas phase |
References
Go To: Top, 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.
Herd, Misth, et al., 1989
Herd, C.A.; Misth, D.; Adams, N.G.,
A Study of Dissociative Electron Attachment to CF3SO3CH3 and CF3SO3C2H5 Triflate Esters Using the FALP Apparatus,
Int. J. Mass Spectrom. Ion Proc., 1989, 91, 2, 177, https://doi.org/10.1016/0168-1176(89)83007-1
. [all data]
Viggiano, Paulson, et al., 1987
Viggiano, A.A.; Paulson, J.F.; Dale, F.; Henchman, M.,
Negative Ion Chemistry of Triflic Anhydride in the Gas Phase and the Electron Affinity of CF3SO3,
J. Phys. Chem., 1987, 91, 11, 3031, https://doi.org/10.1021/j100295a077
. [all data]
Koppel, Taft, et al., 1994
Koppel, I.A.; Taft, R.W.; Anvia, F.; Zhu, S.Z.; Hu, L.Q.; Sung, K.S.; Desmarteau, D.D.; Yagupolskii, L.M.,
The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids,
J. Am. Chem. Soc., 1994, 116, 7, 3047, https://doi.org/10.1021/ja00086a038
. [all data]
Leito, Raamat, et al., 2009
Leito, I.; Raamat, E.; Kutt, A.; Saame, J.; Kipper, K.; Koppel, I.A.; Koppel, I.; Zhang, M.; Mishima, M.; Yagupolskii, L.M.; Garlyauskayte, R.Y.; Filatov, A.A.,
Revision of the Gas-Phase Acidity Scale below 300 kcal mol(-1),
J. Phys. Chem. A, 2009, 113, 29, 8421-8424, https://doi.org/10.1021/jp903780k
. [all data]
Adams, Smith, et al., 1986
Adams, N.G.; Smith, D.; Viggiano, A.A.; Paulson, J.F.; Henchman, M.J.,
Dissociative attachment reactions of electron with strong acid molecules,
J. Chem. Phys., 1986, 84, 6728. [all data]
Viggiano, Henchman, et al., 1992
Viggiano, A.A.; Henchman, M.J.; Dale, F.; Deakyne, C.A.; Paulson, J.F.,
Gas-Phase Reactions of Weak Bronsted Bases I-, PO3-, HSO4-, FSO3-, and CF3SO3- with Strong Bronsted Acids H2SO4, FSO3H, and CF3SO3H - A Quantitative Study,
J. Am. Chem. Soc., 1992, 114, 11, 4299, https://doi.org/10.1021/ja00037a039
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EAneutral Electron affinity of neutral species ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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