2-Heptyne

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Gas phase 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas20.26 ± 0.53kcal/molChydRogers, Dagdagan, et al., 1979 

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:
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
LL - Sharon G. Lias and Joel F. Liebman

View reactions leading to C7H12+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.18PIOrlov, Boganov, et al., 1985LBLHLM
9.326 ± 0.005PECarlier, Dubois, et al., 1975LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H7+9.6C2H5EIWagner-Redeker, Levsen, et al., 1981LLK
C6H9+10.11CH3ESTTakhistov and Ponomarev, 1994LL
C6H9+9.36CH3EITakhistov and Ponomarev, 1994Unpublished result of Khlebnikova,N.S.; Orlov,V.M.; Ponomarev,D.A.; Takhistov,V.V.; LL
C6H9+9.18CH3PIOrlov, Boganov, et al., 1985LBLHLM
C6H9+9.4CH3EIWagner-Redeker, Levsen, et al., 1981LLK

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.

Rogers, Dagdagan, et al., 1979
Rogers, D.W.; Dagdagan, O.A.; Allinger, N.L., Heats of hydrogenation and formation of linear alkynes and a molecular mechanics interpretation, J. Am. Chem. Soc., 1979, 101, 671-676. [all data]

Orlov, Boganov, et al., 1985
Orlov, V.M.; Boganov, A.M.; Siretskaya, T.V.; Takhistov, V.V., Thermochemical characteristics of the molecular and fragmentation ions of substituted tert-butylacetylenes, Izv. Akad. Nauk SSSR Ser. Khim., 1985, 12, 2795. [all data]

Carlier, Dubois, et al., 1975
Carlier, P.; Dubois, J.E.; Masclet, P.; Mouvier, G., Spectres de photoelectrons des alcynes, J. Electron Spectrosc. Relat. Phenom., 1975, 7, 55. [all data]

Wagner-Redeker, Levsen, et al., 1981
Wagner-Redeker, W.; Levsen, K.; Schwarz, H.; Zummack, W., Gaseous alkyne ions, J. Am. Chem. Soc., 1981, 16, 361. [all data]

Takhistov and Ponomarev, 1994
Takhistov, V.V.; Ponomarev, D.A., Isodesmic reactions and thermochemistry of ions, Org. Mass Spectrom., 1994, 29, 395. [all data]


Notes

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