Bicyclo[4.1.0]heptane

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Gas phase 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas2. ± 4.2kJ/molCcbChang, McNally, et al., 1970ALS
Δfgas11.0kJ/molN/ATimofeeva, Kozina, et al., 1970Value computed using ΔfHliquid° value of -27.0±1.7 kj/mol from Timofeeva, Kozina, et al., 1970 and ΔvapH° value of 38.0 kj/mol from Chang, McNally, et al., 1970.; DRB

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
119.96298.15Chang S., 1970These values were calculated by a method of force field; their uncertainties may exceed 5-10 J/mol*K.; GT
164.72400.
204.39500.

Gas phase ion energetics data

Go To: Top, Gas phase 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 compiled as indicated in comments:
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 C7H12+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.03 ± 0.02EIWinters and Collins, 1968RDSH
9.46PEHeilbronner, Gleiter, et al., 1973Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H3+12.53 ± 0.12?EIWinters and Collins, 1968RDSH
C3H5+11.90 ± 0.10?EIWinters and Collins, 1968RDSH
C4H5+12.42 ± 0.10?EIWinters and Collins, 1968RDSH
C4H6+10.10 ± 0.09?EIWinters and Collins, 1968RDSH
C4H7+10.27 ± 0.08?EIWinters and Collins, 1968RDSH
C5H7+9.53 ± 0.07C2H5EIWinters and Collins, 1968RDSH
C5H8+9.37 ± 0.07C2H4EIWinters and Collins, 1968RDSH
C6H9+9.30 ± 0.09CH3EIWinters and Collins, 1968RDSH

Mass spectrum (electron ionization)

Go To: Top, Gas phase 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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

Due to licensing restrictions, this spectrum cannot be downloaded.

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 CONTINENTAL OIL CO., PONCA CITY, OKLA, USA
NIST MS number 27633

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase 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.

Chang, McNally, et al., 1970
Chang, Sho-ju.; McNally, D.; Shary-Tehrany, S.; Hickey, S.M.J.; Boyd, R.H., The heats of combustion and strain energies of bicylo[n.m.O]alkanes, J. Am. Chem. Soc., 1970, 92, 3109-3118. [all data]

Timofeeva, Kozina, et al., 1970
Timofeeva, L.P.; Kozina, M.P.; Skuratov, S.M.; Nefedov, O.M.; Novitskaya, N.N., Heats of combustion of norcarane and 1-cyclohexylnorcarane, Moscow Univ. Chem. Bull. (Engl. Transl.), 1970, 25, 19-21. [all data]

Chang S., 1970
Chang S., The heats of combustion and strain energies of bicyclo[n.m.0]alkanes, J. Am. Chem. Soc., 1970, 92, 3109-3118. [all data]

Winters and Collins, 1968
Winters, R.E.; Collins, J.H., Mass spectrometric studies of structural isomers. I. Mono- and bicyclic C7H12 molecules, J. Am. Chem. Soc., 1968, 90, 1235. [all data]

Heilbronner, Gleiter, et al., 1973
Heilbronner, E.; Gleiter, R.; Hoshi, T.; Meijere, A., The interaction of Walsh-orbitals in diademane and related hydrocarbons, Helv. Chim. Acta, 1973, 56, 1594. [all data]


Notes

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