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

Mass spectrum (electron ionization)

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

Spectrum

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin J.T. CLERC, ORGANIC CHEM. LAB., ETH, ZURICH, SWITZ.
NIST MS number 65099

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References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics 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.

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

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