Electron transfer in FeIIFeIII model complexes of iron-oxo proteins

The nature of valence trapping is studied for a series of six μ-phenoxo-bis(μ-carboxylate)-bridged Fe II Fe III complexes. The septadentate ligand bimp - binds the two metal ions and provides a phenoxide bridge as well as four imidazole moieties. The X-ray structure of [Fe II Fe III (bimp)(μ-O 2 CPh) 2 ](BPh 4 ) 2 . 3 / 2 CH 3 CN at 295 K is reported