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. 2003 Mar 17;100(7):3683–3688. doi: 10.1073/pnas.0536955100

Figure 2.

Figure 2

Structures, ν(CO), ν(CN) stretching frequencies (26), and possible oxidation-state assignments of the oxidized (Hox) and reduced (Hred) forms of the [Fe]H2ase (44) (Fe⋅⋅⋅Fe distances are 2.6 Å for both).