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. Author manuscript; available in PMC: 2012 Jun 25.
Published in final edited form as: J Am Chem Soc. 2011 Mar 22;133(15):5810–5817. doi: 10.1021/ja106564a

Figure 5.

Figure 5

Proposed catalytic cycle for the four-electron reduction of O2 to H2O, with [MnH2bupa]− as the catalyst. The amount of DPH required for each step is shown within the boxes.