Abstract Nearly all [C 5 H 10 O]+ isomers with the oxygen on the second carbon are shown to interconvert with each other and lose methyl and ethylene at the threshold for dissociation. The methyls contain the carbons from the 1-and 5-positions with about equal frequency, and C (3) or perhaps C (4) about half as often as either terminal carbon. CH 3 CH 2 CH 2 CO+ is formed by loss of the C (1) methyl and
[Bowen, Richard D.; Colburn, Alex W.; Derrick, Peter J. Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1991 , # 1 p. 147 - 151]
