Abstract [C 2 H 3 O] + ions with the initial structures [CH 3 CO] + , and [CH 2 CHO] + cannot be distinguished on the basis of their collisional activation spectra, demonstrating that these isomers interconvert at energies below their threshold for decomposition. Self‐protonation of ketene leads to the [CH 3 CO] + ion, while the [C 2 H 3 O] + ion generated from glycerol most probably has the structure of an oxygen protonated ketene [CH 2 COH] + .
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Weber et al. (1980) studied this question.
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