Solvent- and Halide-Induced (Inter)conversion between Iron(II)-Disulfide and Iron(III)-Thiolate Complexes

{Abstract Disulfide/thiolate interconversion controlled by Cu is proposed to be involved in relevant biological processes. In analogy to Cu, it can be envisaged that Fe also participates in the control of similar biological processes. We describe here Fe complexes that undergo FeIII-thiolate/FeII-disulfide (inter)conversion mediated by halide (de)coordination, and by the nature of the solvent. The dinuclear FeII-disulfide complex [FeII2(LSSL)]2+ ((LS)2−=2,2′-(2,2′-bipyridine-6,6′-diyl)bis(1,1-diphenylethanethiolate), (LSSL)2−=the corresponding disulfide ligand) shows solvent-dependent properties. Whereas in a non-coordinating solvent (CH2Cl2) the dinuclear FeII-disulfide complex is the only stable form, in the presence of coordinating solvents like MeCN or DMF it is partly or fully converted into mononuclear FeIII-thiolate species having a bound solvent molecule ([FeIII(LS)(Solv)]+

Références

Titre
Solvent- and Halide-Induced (Inter)conversion between Iron(II)-Disulfide and Iron(III)-Thiolate Complexes
Type de publication
Article de revue
Année de publication
2018
Revue
Chemistry – A European Journal
Volume
24
Pagination
11973-11982
Soumis le 3 février 2021