Geometry optimizations of perepoxide, 1,4-diradical, zwitterion and dioxetane for the 1,1-diaminoethylene plus singlet molecular oxygen system were performed using the energy gradients of the HF 4-31G and STO-3G solutions. The zwitterion (ZW) is more stable than the perepoxide and σπ-diradical (DR) intermediates (at the 4-31G level), supporting the previous ZW mechanism for photoovygenation reactions of N-activated C-C double bonds.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry