Propanal, 2,2-dimethyl-

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Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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 + Propanal, 2,2-dimethyl- = (Fluorine anion • Propanal, 2,2-dimethyl-)

By formula: F- + C5H10O = (F- • C5H10O)

Quantity Value Units Method Reference Comment
Δr103. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Δr70.3 ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; B,M

Chlorine anion + Propanal, 2,2-dimethyl- = (Chlorine anion • Propanal, 2,2-dimethyl-)

By formula: Cl- + C5H10O = (Cl- • C5H10O)

Quantity Value Units Method Reference Comment
Δr62.8 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Δr91.6J/mol*KN/ALarson and McMahon, 1984gas phase; switching reaction(Cl-)CF3H, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M
Quantity Value Units Method Reference Comment
Δr35. ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M

C5H9O- + Hydrogen cation = Propanal, 2,2-dimethyl-

By formula: C5H9O- + H+ = C5H10O

Quantity Value Units Method Reference Comment
Δr1621. ± 17.kJ/molG+TSNoest and Nibbering, 1980gas phase; B
Quantity Value Units Method Reference Comment
Δr1594. ± 17.kJ/molIMRBNoest and Nibbering, 1980gas phase; B

(CAS Reg. No. 55091-58-2 • 4294967295Propanal, 2,2-dimethyl-) + Propanal, 2,2-dimethyl- = CAS Reg. No. 55091-58-2

By formula: (CAS Reg. No. 55091-58-2 • 4294967295C5H10O) + C5H10O = CAS Reg. No. 55091-58-2

Quantity Value Units Method Reference Comment
Δr191. ± 11.kJ/molN/ABartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

1,1-Dimethoxy-2,2-dimethylpropane + Water = Propanal, 2,2-dimethyl- + 2Methyl Alcohol

By formula: C7H16O2 + H2O = C5H10O + 2CH4O

Quantity Value Units Method Reference Comment
Δr33.16 ± 0.079kJ/molEqkWiberg and Squires, 1981liquid phase; ALS

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes

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:
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C5H10O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.51 ± 0.01eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
0.000521EFDDesfrancois, Abdoul-Carime, et al., 1994EA: 0.5 meV. Dipole-bound state.; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.51PITraeger, 1985LBLHLM
9.50 ± 0.01PEHernandez, Masclet, et al., 1977LLK
9.51 ± 0.01PECocksey, Eland, et al., 1971LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H5O+9.64C2H5PITraeger, 1985LBLHLM

De-protonation reactions

C5H9O- + Hydrogen cation = Propanal, 2,2-dimethyl-

By formula: C5H9O- + H+ = C5H10O

Quantity Value Units Method Reference Comment
Δr1621. ± 17.kJ/molG+TSNoest and Nibbering, 1980gas phase; B
Quantity Value Units Method Reference Comment
Δr1594. ± 17.kJ/molIMRBNoest and Nibbering, 1980gas phase; B

Mass spectrum (electron ionization)

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

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 Japan AIST/NIMC Database- Spectrum MS-NW-5375
NIST MS number 231221

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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.

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

Noest and Nibbering, 1980
Noest, A.J.; Nibbering, N.M.M., Homoconjugation vs. charge dipole stabilization interaction effects in the stabilization of carbanions in the gas phase, J. Am. Chem. Soc., 1980, 102, 6427. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Wiberg and Squires, 1981
Wiberg, K.B.; Squires, R.R., Thermochemical studies of carbonyl reactions. 2. Steric effects in acetal and ketal hydrolysis, J. Am. Chem. Soc., 1981, 103, 4473-4478. [all data]

Desfrancois, Abdoul-Carime, et al., 1994
Desfrancois, C.; Abdoul-Carime, H.; Khelifa, N.; Schermann, J.P., Fork 1/r to 1/r2 Potentials: Electron Exchange between Rydberg Atoms and Polar Molecules, Phys. Rev. Lett., 1994, 73, 18, 2436, https://doi.org/10.1103/PhysRevLett.73.2436 . [all data]

Traeger, 1985
Traeger, J.C., Heat of formation for the propanoyl cation by photoionization mass spectrometry, Org. Mass Spectrom., 1985, 20, 223. [all data]

Hernandez, Masclet, et al., 1977
Hernandez, R.; Masclet, P.; Mouvier, G., Spectroscopie de photoelectrons d'aldehydes et de cetones aliphatiques, J. Electron Spectrosc. Relat. Phenom., 1977, 10, 333. [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]


Notes

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