2-Propanone, 1,3-difluoro-


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 by: John E. Bartmess

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Individual Reactions

C3H3F2O- + Hydrogen cation = 2-Propanone, 1,3-difluoro-

By formula: C3H3F2O- + H+ = C3H4F2O

Quantity Value Units Method Reference Comment
Δr350.3 ± 3.1kcal/molG+TSFarid and McMahon, 1980gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Δr343.1 ± 3.0kcal/molIMRBFarid and McMahon, 1980gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale

(CAS Reg. No. 1064658-34-9 • 42949672952-Propanone, 1,3-difluoro-) + 2-Propanone, 1,3-difluoro- = CAS Reg. No. 1064658-34-9

By formula: (CAS Reg. No. 1064658-34-9 • 4294967295C3H4F2O) + C3H4F2O = CAS Reg. No. 1064658-34-9

Quantity Value Units Method Reference Comment
Δr50.9 ± 6.5kcal/molTherClair and McMahon, 1980gas phase; Between MeCHO, PhCOMe; value altered from reference due to change in acidity scale

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

Quantity Value Units Method Reference Comment
Proton affinity (review)182.3kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity175.2kcal/molN/AHunter and Lias, 1998HL

De-protonation reactions

C3H3F2O- + Hydrogen cation = 2-Propanone, 1,3-difluoro-

By formula: C3H3F2O- + H+ = C3H4F2O

Quantity Value Units Method Reference Comment
Δr350.3 ± 3.1kcal/molG+TSFarid and McMahon, 1980gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr343.1 ± 3.0kcal/molIMRBFarid and McMahon, 1980gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale; B

References

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

Farid and McMahon, 1980
Farid, R.; McMahon, T.B., The gas phase acidities of fluorinated acetones. An ICR investigation of the role of fluorine substituents in the stabilization of planar carbanions, Can. J. Chem., 1980, 58, 2307. [all data]

Clair and McMahon, 1980
Clair, R.L.; McMahon, T.B., An ion cyclotron resonance study of base-induced elimination reactions of fluorinated alcohols and unimolecular loss of HF from chemically activated fluoroalkoxide ions, Int. J. Mass Spectrom. Ion Phys., 1980, 33, 21. [all data]

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]


Notes

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