Characterization of Dinuclear Dialkoxobridged Iron(iii)-L-Proline Complexes as the Rearrangement Products of Trinuclear Oxobridged Iron(iii)-L-Proline Complexes

Dinuclear dimethoxolized iron(III)-L-proline complexes, obtained as a result of thermal, photolytic, and chemoreductive rearrangement of trinuclear oxobridged iron(III)-L-proline complexes, have been characterized by spectral and magnetic measurements. Under the conditions described, the rearrangement does not occur in other solvents nor when parallel complexes with other L-amino acids are used, including, surprisingly, L-hydroxyproline.