1-Heptyne

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Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil372. ± 1.KAVGN/AAverage of 31 out of 33 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus192.1KN/ABoord, Greenlee, et al., 1946Uncertainty assigned by TRC = 0.5 K; TRC
Tfus192.22KN/AHenne and Greenlee, 1945Uncertainty assigned by TRC = 0.1 K; TRC
Tfus192.15KN/ACampbell and Eby, 1941Uncertainty assigned by TRC = 1.5 K; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
9.06351.AStephenson and Malanowski, 1987Based on data from 336. to 373. K. See also Eisen and Orav, 1970 and Boublik, Fried, et al., 1984.; AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C7H12+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
10.044 ± 0.005PECarlier, Dubois, et al., 1975LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H7+10.1C2H5EIWagner-Redeker, Levsen, et al., 1981LLK
C6H9+9.9CH3EIWagner-Redeker, Levsen, et al., 1981LLK

References

Go To: Top, Phase change data, 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.

Boord, Greenlee, et al., 1946
Boord, C.E.; Greenlee, K.W.; Perilstein, W.L., The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Weight, Am. Pet. Inst. Res. Proj. 45, Eighth Annu. Rep., Ohio State Univ., June 30, 1946. [all data]

Henne and Greenlee, 1945
Henne, A.L.; Greenlee, K.W., Preparation and Physical Constants of Acetylenic Compounds, J. Am. Chem. Soc., 1945, 67, 484-5. [all data]

Campbell and Eby, 1941
Campbell, K.N.; Eby, L.T., The Reduction of Multiple Carbon-Carbon Bonds III. Further Studies on the Preparation of Olefins from Acetylenes, J. Am. Chem. Soc., 1941, 63, 2683. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Eisen and Orav, 1970
Eisen, O.; Orav, A., Eesti NSV Tead. Akad. Toim. Keem. Geol., 1970, 19, 3, 202. [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [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]


Notes

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