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. Author manuscript; available in PMC: 2020 Jul 10.
Published in final edited form as: Acc Chem Res. 2020 Apr 13;53(5):1056–1065. doi: 10.1021/acs.accounts.0c00044

Figure 4.

Figure 4.

General mechanism for O2 reduction catalyzed by Fe(por) in DMF or MeCN, with the porphyrin abbreviated as an oval. “Reductant” can be either a chemical reductant or an electrode. Adapted with permission from ref 30. Copyright 2019 American Chemical Society.