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The proton affinity of ketene and the heat of formation of CH3CO+

✍ Scribed by P. Ausloos; S.G. Lias

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 361 KB
Volume: 51
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)85353-0

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✦ Synopsis

The equilibrium for proton transfer involving acetone and ketene (CH$OCHsH++ CH2CO -CH$O++ CHsCOCH3) has been studied in a pulsed ion cyclotron resonance spectrometer. Vtiues of 193.6 r I and 194.1 c 1 kcal/mole (1 kcal/mole = 4.18 kjoules) are obtained for the proton affinities of acetone and ketene, respectively (based on a proton affinity of 193.5 C 1 kcallmole for isobutene). A value of 161.5 * 1 kcal/mole for AHf(CH&O> is derived from these results.

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