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. 2015 Mar 16;10(3):e0115349. doi: 10.1371/journal.pone.0115349

Table 3. Wiberg bond index for the C1-C2 bond of the 4-endo and 5-endo conformations of proline along the step 1.

C1-C2 bond in 4-endo conformation
Reactive ICR TS ICP Product
Wiberg bond index 0.9117 0.9245 0.9379 0.6385 0.5529
% relative to reactive 100 101 103 70 61
C1-C2 bond in 5-endo conformation
Reactive ICR TS ICP Product
Wiberg bond index 0.9147 0.9292 0.9434 0.6657 0.0441
% relative to reactive 100 102 103 73 5