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Representative spectra of the [3Fe–4S] cluster. (a, left top) UV–vis of the oxidized form and (b, right) temperature-dependent EPR of the [3Fe–4S]1+ cluster. Reprinted with permission from ref (762). Copyright 2002 Elsevier. (c, left bottom) Mössbauer of the [3Fe–4S]1+ (top) and [3Fe–4S]0 (bottom) clusters . Reprinted with permission from ref (529). Copyright 1997 American Association for the Advancement of Science.
