| Dinitrosyl iron complexes have exhibited multifold of significant reactivity that is of both material science and biological importance. The bridging of 2 dinitrosyl iron centers by a bidentate phosphine ligand is of particular interest for studies on electrochemical properties at the molecular level. By using ligands with different electron donating and accepting ability, the electronic properties of the iron center can be tuned. Binuclear iron complexes of the type [Fe(NO)2X]P-P, where X is a nitrile ligand and P-P is a bis(phosphine) ligand, and were synthesized and characterized. Several monomers of dinitrosyliron(0) complexes using phosphine, nitrile and CO ligands were also prepared. Spectroscopic techniques such as infra-red (IR), ultraviolet-visible (UV-vis), nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) were used to characterize the isolated products. Electrochemical properties of these compounds were investigated using cyclic voltammetry (CV). Mechanistic models of the reaction pathways were proposed based on observations on cyclic voltammetry and characterizations of the isolated products. |
