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2-Propanone, 1,1,1-trifluoro-

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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)723.9kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity692.0kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
10.67 ± 0.01PECocksey, Eland, et al., 1971LLK
11.00 ± 0.02PEYoung and Cheng, 1976Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CF3+14.6?EIMajer, Olavesen, et al., 1971LLK
CH3+14.60?EIMajer, Patrick, et al., 1961RDSH
C2H3O+11.45?EIMajer, Olavesen, et al., 1971LLK
C2H3O+11.45CF3EIMajer, Patrick, et al., 1961RDSH

De-protonation reactions

C3H2F3O- + Hydrogen cation = 2-Propanone, 1,1,1-trifluoro-

By formula: C3H2F3O- + H+ = C3H3F3O

Quantity Value Units Method Reference Comment
Deltar1461. ± 8.8kJ/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Deltar1466. ± 15.kJ/molG+TSCumming and Kebarle, 1978gas phase; B
Quantity Value Units Method Reference Comment
Deltar1431. ± 8.4kJ/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Deltar1436. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; B

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.

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Cocksey, Eland, et al., 1971
Cocksey, B.J.; Eland, J.H.D.; Danby, C.J., The effect of alkyl substitution on ionisation potential, J. Chem. Soc., 1971, (B), 790. [all data]

Young and Cheng, 1976
Young, V.Y.; Cheng, K.L., The photoelectron spectra of halogen substituted acetones, J. Chem. Phys., 1976, 65, 3187. [all data]

Majer, Olavesen, et al., 1971
Majer, J.R.; Olavesen, C.; Robb, J.C., Wavelength effect in the photolysis of halogenated ketones, J. Chem. Soc. B, 1971, 48. [all data]

Majer, Patrick, et al., 1961
Majer, J.R.; Patrick, C.R.; Robb, J.C., Appearance potentials of the acetyl radical-ion, J. Chem. Soc. Faraday Trans., 1961, 57, 14. [all data]

Taft, 1987
Taft, R.W., The Nature and Analysis of Substitutent Electronic Effects, Personal communication. See also Prog. Phys. Org. Chem., 1987, 16, 1. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]


Notes

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