Fig. 1: Isomerization of alkenes.
From: Selective E to Z isomerization of 1,3-Dienes Enabled by A Dinuclear Mechanism
a A qualitative energy profile of Z-alkenes and E-alkenes. An M–M complex may promote E to Z geometric isomerization of alkenes through a dinuclear mechanism. The chemical energy required for the E to Z isomerization may come from the reaction energy of a coupled reaction (A + B → C + D), where the common M–M species are shared, making the net reaction exergonic. b A simplified model for the mononuclear metal hydride pathway which is a representative and conventional mechanism for Z to E isomerization. c A dinuclear M–M pathway that enables kinetic trapping of Z-alkene. d The key intermediates for the isomerization of 1,3-diene.
