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Cyclopentanol

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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 as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C5H10O+ (ion structure unspecified)

Proton affinity at 298K

Proton affinity (kJ/mol) Reference Comment
798. ± 6.Cao and Holmes, 2001MM

Ionization energy determinations

IE (eV) Method Reference Comment
9.72PITraeger, 1985LBLHLM
9.58 ± 0.06EIHolmes, Yuan, et al., 1977LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H5O+9.72C2H5PITraeger, 1985LBLHLM
C3H6O+9.98C2H4EIHolmes and Lossing, 1980LLK
C5H8+9.66 ± 0.06H2OEIHolmes, Yuan, et al., 1977LLK
C5H8+9.49H2OEILewis and Hamill, 1970RDSH
H2O+13.23C5H8EILewis and Hamill, 1970RDSH

De-protonation reactions

C5H9O- + Hydrogen cation = Cyclopentanol

By formula: C5H9O- + H+ = C5H10O

Quantity Value Units Method Reference Comment
Deltar1602. ± 19.kJ/molD-EAAlconcel and Continetti, 2002gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise; B
Quantity Value Units Method Reference Comment
Deltar1535. ± 4.6kJ/molN/AGarver, Yang, et al., 2011gas phase; B
Deltar1569. ± 20.kJ/molH-TSAlconcel and Continetti, 2002gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise; 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.

Cao and Holmes, 2001
Cao, J.; Holmes, J.L., Determination of the proton affinities of secondary alcohols from the dissocation of proton-bound molecular trios, European J. Mass Spectrom., 2001, 7, 243-247. [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]

Holmes, Yuan, et al., 1977
Holmes, J.L.; Yuan, D.; Rye, R.T.B., Metastable ion studies VII-Loss of water from the molecular ion of cyclopentanol, Org. Mass Spectrom., 1977, 12, 254. [all data]

Holmes and Lossing, 1980
Holmes, J.L.; Lossing, F.P., Gas-phase heats of formation of keto and enol ions of carbonyl compounds., J. Am. Chem. Soc., 1980, 102, 1591. [all data]

Lewis and Hamill, 1970
Lewis, D.; Hamill, W.H., Excited states of neutral molecular fragments from appearance potentials by electron impact in a mass spectrometer, J. Chem. Phys., 1970, 52, 6348. [all data]

Alconcel and Continetti, 2002
Alconcel, L.S.; Continetti, R.E., Dissociation dynamics and stability of cyclopentoxy and cyclopentoxide, Chem. Phys. Lett., 2002, 366, 5-6, 642-649, https://doi.org/10.1016/S0009-2614(02)01633-0 . [all data]

Garver, Yang, et al., 2011
Garver, J.M.; Yang, Z.B.; Kato, S.; Wren, S.W.; Vogelhuber, K.M.; Lineberger, W.C.; Bierbaum, V.M., Gas Phase Reactions of 1,3,5-Triazine: Proton Transfer, Hydride Transfer, and Anionic sigma-Adduct Formation, J. Am. Soc. Mass Spectrom., 2011, 22, 7, 1260-1272, https://doi.org/10.1007/s13361-011-0133-9 . [all data]


Notes

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