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Fe(III)tame-N2S3 ORTEP
Synthetic analogue of unmodified NHase active site

trenSFe_NO2 ORTEP
Nitrite-bound Fe-thiolate complex

Mn(III)-OOtBu ORTEP
1st crystallographically characterized Mn-alkylperoxo

Binuclear Mn peroxo
Dioxygen-derived peroxo

(trenS)Fe-NO
Probing the dioxygen binding site with NO

(Pr,Pr)Fe(II)
Reactive 5-coordinate superoxo precursor

(trenS)Fe(IV)=O
1st crystallographically characterized thiolate-ligated high-valent oxo

Fe(II)cyclam-PrS
A five coordinate thiolate-ligated complex that reduces superoxide
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