3-Heptyne

• Formula: C₇H₁₂
• Molecular weight: 96.1702
• IUPAC Standard InChI: InChI=1S/C7H12/c1-3-5-7-6-4-2/h3-5H2,1-2H3 Copy

  
• IUPAC Standard InChIKey: KLYHSJRCIZOUHE-UHFFFAOYSA-N Copy
• CAS Registry Number: 2586-89-2
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: 1-Ethyl-2-propylacetylene; hept-3-yne
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
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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

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

Enthalpy of vaporization

Reaction 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

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

2 +  =

By formula: 2H₂ + C₇H₁₂ = C₇H₁₆

Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Kovats' RI, polar column, isothermal

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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]

Farchan Laboratories, 1990
Farchan Laboratories, Research Chemicals Catalog, Farchan Laboratories, Gainesville, FL, 1990, 91. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Anonymous, 1948
Anonymous, R., , Am. Pet. Inst. Res. Proj. 6, Natl. Bur. Stand., 1948. [all data]

Lespieau and Wiemann, 1929
Lespieau, R.; Wiemann, Use of substituted epidibromohydrines in the preparation of acetylene hydrocarbons hexene and gamma-hexine, Bull. Soc. Chim. Fr., 1929, 45, 627-635. [all data]

Bourguel, 1925
Bourguel, M., Ann. Chim. (Paris), 1925, 3, 325. [all data]

Campbell and Eby, 1941
Campbell, K.N.; Eby, L.T., The preparation of higher cis and trans olefins, J. Am. Chem. Soc., 1941, 63, 216. [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]

Soják, Farkas, et al., 1991
Soják, L.; Farkas, P.; Ostrovský, I.; Janák, J.; Chrétien, J.R., Capillary gas chromatography of C₅ - C₁₃ branched alkynes on squalane and liquid crystal stationary phases, J. Chromatogr., 1991, 557, 241-253, https://doi.org/10.1016/S0021-9673(01)87136-3 . [all data]

Kuningas, Rang, et al., 1990
Kuningas, K.; Rang, S.; Kailas, T., Relationship between the structure and retention of n-alkenes and n-alkynes on silicone phases, J. Chromatogr., 1990, 520, 137-148, https://doi.org/10.1016/0021-9673(90)85094-C . [all data]

Rang, Kuningas, et al., 1976
Rang, S.; Kuningas, K.; Orav, A.; Eisen, O., Capillary gas chromatography of n-alkynes. I. Retention indices, J. Chromatogr., 1976, 119, 451-460, https://doi.org/10.1016/S0021-9673(00)86807-7 . [all data]

Orav and Eisen, 1972
Orav, A.; Eisen, O., The retention indexes for alkenes, alkynes and cyclenes on capillary columns, Izv. Akad. Nauk Est. SSR, Khim. Geol., 1972, 21, 1, 39-47. [all data]

Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203 . [all data]

Rang, Orav, et al., 1988
Rang, S.A.; Orav, A.E.; Kuningas, K.R.; Meister, A.E.; Strense, T.V.; Eisen, O.G., Gas-Chromatographic Characteristics of unsaturated hydrocarbons, Academy of Sciences of Estonia SSR, Tallinn, Estonia SSR, 1988, 208. [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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