Organometallic electron reservoir sandwich iron complexes as potential agents for redox and electron transfer chain catalysis

摘要: Abstract Among the various properties of transition metal organometallic compounds is ease with which they can withstand redox changes. This property led to concept ‘organometallic electron-reservoir’. These electron-reservoirs are used perform different types catalytic reactions. The first mentioned electron transfer chain (ETC) catalysis also called electrocatalysis, uses them as initiators in reactions that implicate itself real and effective catalyst. Examples will illustrate this principle chemistry using Fe sandwich complexes: (i) ligand substitution [Fe(II)Cp(arene)] + PF 6  − by two-electron donors; (ii) intramolecular disproportionation dinuclear fulvalene carbonyl complexes selective discrimination centers; (iii) design a system both ETC catalyses coupled (the known example concerns polymerization terminal alkynes W 0 complex); (iv) dithiocarbamate chelation Fe(II) piano stool be initiated either reduction or oxidation, pathways being explained. A second application these takes place catalysis: when amount act carriers lowering overpotential existing between an electrode substrate. Two cases were examined: water nitrogen derivatives: nitrates nitrites.