GENERATION OF A STABLE SIGMA-BONDED IRON(IV) PORPHYRIN - FORMATION AND REACTIVITY OF [(OETPP)FE(IV)(C6H5)]N+ (N = 1-3, OETPP = DIANION OF 2,3,7,8,12,13,17,18-OCTAETHYL-5,10,15,20-TETRAPHENYLPORPHYRIN)

This work reports the first generation and spectral characterization of a sigma-bonded iron(IV) porphyrin which is stable in nonaqueous media at room temperature, as well as the first monomeric iron(III) porphyrin to undergo three reversible one-electron oxidations. It also gives the first example where the migration of a sigma- bonded axial ligand occurs from a doubly and not singly oxidized iron porphyrin.