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The Enthalpies of Formation of Ethylcyclobutane, Methylenecyclobutane, and 1,1-Dimethylcyclopropane

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  • Personal Author:
  • Description:
    The enthalpies of combusion of ethylcyclobutane, methylenecyclobutane, and 1,1-dimethylcyclopropane were measured by oxygen-bomb combustion calorimetry. The following values are reported for the standard enthalpy of combustion ^hc deg. (298.15 K)/kcalth mol-1 of these compounds in the liquid state: ethylcyclobutane, -(960.11 +/-0.16); Methylenecyclobutane, -(765.95 +/-0.12); 1,1-Dimethylcyclopropane, -(803.86 +/-0.17. The enthalpy of vaporization of methylenecyclobutane was derived from vapor pressure measurements, and enthalpies of vaporization of ethylcyclobutane and 1,1-dimethylcyclopropane were estimated. Values of the enthalpy of formation in the liquid and gaseous states were derived for all three compounds. Ring-strain energy was estimated. Some regularities and irregularities in the accepted values of enthalpies of combustion of the alkylcyclopropanes and alkylcyclobutanes indicate an error in a previous determination of the enthalpy of formation of methylcyclobutane. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • ISSN:
    0021-9614
  • Document Type:
    Text
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    BERC - Bartlesville Energy Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    303-310
  • Volume:
    6
  • Issue:
    3
  • NIOSHTIC Number:
    nn:10010867
  • Citation:
    J Chem Thermodynamics 1974 Mar; 6(3):303-310
  • Federal Fiscal Year:
    1974
  • Peer Reviewed:
    False
  • Source Full Name:
    The Journal of Chemical Thermodynamics
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:1f79e6155b69e928cf2848d3ae34ff2a81499ded9357ed74a3dbdde390b791d51bdd6e57c914391b50488e8c26300d25881c5e2bf18522c4d2e6cfa1583f648d
  • Download URL:
  • File Type:
    Filetype[PDF - 450.34 KB ]
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