Binding of the substrate in INT-3e' is further stabilized through an agostic interaction between one of the β-C-H bonds and the iron center. In TS-3e' this C-H bond is cleaved (vide supra). With the lone pair on the α-C the alkene π-system is re-established forming a C=C double bond which, as a consequence of the anti-periplanar conformation of the C-C bond in INT-3e', adopts the final (E)configuration.