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Potential energy surface obtained using the geometries at the B3LYP-D3/6-31G(d) level of theory showing the pathways for syn and anti product formation. The abbreviations are as follows: T: Triplet; S: Singlet; TS: Transition state. Dotted arrows represent vertical photoexcitation, and cyan shading illustrates relaxation of the triplet conformer states to the excimer.
