Abstract: Various iron-porphyrin complexes involving an iron-nitrosoalkane bond, Fe"(porphyrin)(RNO)(L), with porphyrin= TPP, TpCIPP, TTP, or DPDME, R= i-Pr or Me, and L= MeOH, i-PrNHOH, i-PrNH,, pyridine, N-methylimidazole, or PPhMe2,'have been prepared either by reaction of Fe"(porphyrin) with the RNO dimer or of Fe"'(porphyrin)(CI) with RNHOH, in the presence of the L ligand. These hexacoordinate complexes and the ...