Journal of the American Chemical Society

Relative heats of formation of cyclic oxonium ions in sulfuric acid

JW Larsen, S Ewing

Index: Larsen,J.W.; Ewing,S. Journal of the American Chemical Society, 1971 , vol. 93, # 20 p. 5107 - 5111

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Citation Number: 9

Abstract

Abstract: The relative heats of formation of a series of 2-substituted 4, 4-dimethyl-l, 3- dioxolenium ions have been measured calorimetrically in concentrated sulfuric acid. The relative heats of formation of some tetrahydrofuryl,-pyryl, and 1, 3-dioxenium ions have also been measured. A significant Baker-Nathan order has been observed. Replacement of a methyl group by phenyl or vinyl results in a less exothermic heat of formation for the ion. ...