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Article Dans Une Revue Faraday Discussions Année : 2022

A bio-inspired heterodinuclear hydrogenase CoFe complex

Résumé

Herein, a new heterobimetallic CoFe complex is reported with the aim of comparing its performance in terms of H-2 production within a series of related MFe complexes (M = Ni, Fe). The fully oxidized [(L-N2S2)Co-II(CO)(FeCp)-Cp-II](+) complex ((CoFeII)-Fe-II, LN2S2 2- = 2,2 '-(2,2 '-bipyridine-6,6 '-diyl)bis(1,1 '-diphenylethanethiolate), Cp- = cyclopentadienyl anion) can be (electro)chemically reduced to its (CoFeII)-Fe-I form, and both complexes have been isolated and fully characterized by means of classic spectroscopic techniques and theoretical calculations. The redox properties of (CoFeII)-Fe-II have been investigated in DMF, revealing that this complex is the easiest to reduce by one-electron among the analogous MFe complexes (M = Ni, Fe, Co). Nevertheless, it displays no electrocatalytic activity for H-2 production, contrary to the FeFe and NiFe analogs, which have proven remarkable performance.
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Dates et versions

hal-03597855 , version 1 (23-11-2022)

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Lili Sun, Suzanne M. Adam, Walaa Mokdad, Rolf David, Anne Milet, et al.. A bio-inspired heterodinuclear hydrogenase CoFe complex. Faraday Discussions, 2022, 234, pp.34-41. ⟨10.1039/d1fd00085c⟩. ⟨hal-03597855⟩
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