2,4-Hexadiyne

• Formula: C₆H₆
• Molecular weight: 78.1118
• IUPAC Standard InChI: InChI=1S/C6H6/c1-3-5-6-4-2/h1-2H3 Copy

  
• IUPAC Standard InChIKey: PCTCNWZFDASPLA-UHFFFAOYSA-N Copy
• CAS Registry Number: 2809-69-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: Dimethylbutadiyne; Dimethyldiacetylene; CH3C≡CC≡CCH3; Hexa-2,4-diyne
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of sublimation

Enthalpy of phase transition

Entropy of phase transition

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.

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]

Prevost, 1926
Prevost, C., The Catalytic Dehydrogenation of Vinylalcoylcarbinols, C. R. Hebd. Seances Acad. Sci., 1926, 183, 853. [all data]

Pauling, Springall, et al., 1939
Pauling, L.; Springall, H.D.; Palmer, K.J., The Electron Diffraction Investigation of Methylacetylene, Dimethyl- acetylene, Dimethyldiacetylene, Methyl Cyanide, Diacetylene and Cyanogen cyanogen, J. Am. Chem. Soc., 1939, 61, 927-8. [all data]

Meyer and Meyer, 1986
Meyer, E.F.; Meyer, J.J., Vapor Pressure of 2,4-Hexadiyne: Solid(0-21 deg C) and Liquid (91-135 deg C), J. Chem. Eng. Data, 1986, 31, 273. [all data]

Luk'yanova, Pimenova, et al., 1992
Luk'yanova, V.A.; Pimenova, S.M.; Timofeeva, L.P.; Kozina, M.P.; Kolesov, V.P.; Tarakanova, A.V., Standard enthalpies of formation of some derivatives of diacetylene, Russ. J. Phys. Chem. (Engl. Transl.), 1992, 66, 1083-1085. [all data]

Meyer and Meyer, 1986, 2
Meyer, Edwin F.; Meyer, John J., Vapor pressure of 2,4-hexadiyne: solid (0-21.degree.C) and liquid (91-135.degree.C), J. Chem. Eng. Data, 1986, 31, 3, 273-274, https://doi.org/10.1021/je00045a004 . [all data]

Batley, Mraw, et al., 1982
Batley, M.; Mraw, S.; Staveley, L.A.K.; Overs, A.H.; Owen, M.C.; Thomas, R.K.; White, J.W., The structure and dynamics of crystalline 2,4-hexadiyne. I. Crystal structure, thermodynamics, and model calculations, Mol. Phys., 1982, 45(5), 1015-1034. [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔsubH	Enthalpy of sublimation
  ΔvapH°	Enthalpy of vaporization at standard conditions

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