| Abstract
| - The decomposition mechanisms of four alkoxide anions, CH3O-, CH3CH2O-, (CH3)2CHO-, and (CH3)3CO-,have been studied with modified G2 (G2++) and G3 methods. The energy profiles for the decompositionreactions of each alkoxide anion are reported. It is found that the decompositions proceed via an anionicmechanism with a stepwise pathway. For anions CH3CH2O- and (CH3)2CHO-, calculated results indicatethat the H2 elimination has a lower energy barrier than the CH4 elimination. This result is in total agreementwith the experimental data obtained in the collision-activated dissociation and infrared multiple photon inducedelimination studies of simple alkoxide anions.
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