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. Author manuscript; available in PMC: 2015 Feb 15.
Published in final edited form as: Arch Biochem Biophys. 2013 Oct 22;0:96–104. doi: 10.1016/j.abb.2013.10.010

Figure 3.

Figure 3

Schematic of the model of tunneling and coupled motion. A) The reaction coordinate is composed of motion of 3 hydrogens (black): the transferred atom moving from donor to acceptor carbon (gray), and the 2° hydrogens swinging around as the donor and acceptor rehybridize. The red atom represents the oxygen of the alcohol/aldehyde. B) The coupled reaction coordinate mode shown in A tunnels through the barrier with an efficiency dependent upon the reactant (blue) and product (red) wavefunction overlap. Reproduced from reference [30] with permission from Elsevier.