Abstract

Ehrenfest Force F(r) trajectories were constructed for the C-O ring-opening photo-reactions of oxirane. The F(r) trajectories were constructed in an eigenvector-space corresponding to bond-flexing, bond-twist and bond-anharmonicity associated with the least and most preferred directions of charge density accumulation and bond critical point (BCP) sliding respectively. The presence of the torsion of a CH2 group for one of the photo-reactions led to greater symmetry breaking and greater reaction pathway preference. Consistency was found from hybrid Ehrenfest Force F(r) trajectories that were constructed using the Ehrenfest Force F(r) BCPs and the stress tensor eigenvectors.

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