[C3H3O]+ ions; reacting and non‐reacting configurations

Abstract Three [C 3 H 3 O] + ion structures have been characterized. The most stable of these is $$ {\rm CH}_{\rm 2} = {\rm CH} - \mathop {\rm C}\limits^ + = {\rm O} $$ its heat of formation Δ H f was measured as 749±5 kJ mol −1 . In the μs time frame this ion fragments exclusively by loss of CO, a process which also dominates its collisional activation mass spectrum. The other stable [C 3 H 3 O] + structures, $$ {\rm CH}\equiv \mathop …