Holmes, J. L. published the artcileHeats of formation of ionic and neutral enols of acetaldehyde and acetone, SDS of cas: 20117-47-9, the publication is Journal of the American Chemical Society (1982), 104(9), 2648-9, database is CAplus.
CH2:C(OH)R (I, R = H, Me) are formed, together with C2H4, in the pyrolysis of II (R = H, Me) at 950°/10-3 torr in a tubular quartz reactor leading to an ionization chamber; the pyrolysis of II (R = Me) at >950° gave CH4 and CH2:CO at the expense of enol. The ionization energies, accurately determined by the impact of a monoenergetic electron beam and the ionization efficiency curve threshold, were 9.15 ± 0.05 and 8.48 ± 0.05 eV. The low cross-section for ionization of I is due to the small Franck-Condon factors for the adiabatic transition which are related to the difference in the preferred conformation of the OH group in I and its radical cation. The formation heat of I and its radical cations are calculated; the enol radical cations are more stable than the keto or aldehyde radical cations in contrast to the neutral species. The formation heat increment for the -OCH: fragment was also estimated
Journal of the American Chemical Society published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, SDS of cas: 20117-47-9.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
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