A Novel Route to ((eta)^ 3-Allyl)dicarbonylnitrosyliron Complexes via Transmetallation of (eta)^ 3Allyl Palladium Complexes

X-ray photoelectron spectra of four porphyrins which hardly aggregate were measured. The C1s and N1s peak positions of these porphyrins showed almost identical values, so that these values can be used as a standard.