15N nuclear magnetic resonance studies of iron(II) low spin complexes of 15N and 57Fe labelled porphyrin
Abstract
15 N n.m.r. chemical shifts and 1J(15N–57Fe) coupling constants have been obtained for FeII low spin bis(amnine) complexes of [15N4, 57Fe]-meso-tetraphenylporphyrin, and these are discussed in relation to the effect of the axial ligand on the iron–porphyrin binding profiles.