The gas phase ion chemistry of the acetyl cation and isomeric [C2H3O]+ ions. On the structure of the [C2H3O]+ daughter ions generated from the enol of acetone radical cation

Abstract Methods are described for the unequivocal identification of the acetyl, [CH 3  $$ \mathop {\rm C}\limits^{\rm + } $$ O] ( a ), 1‐hydroxyvinyl, [CH 2  $$ \mathop {\rm C}\limits^{\rm + } $$ OH] ( b ), and oxiranyl, ( d ), cations. They involve the careful examination of metastable peak intensities and shapes and collision induced processes at very low, high and intermediate collision gas pressures. It will be shown that each …