Robert D. Jones

The infrared spectra of some dioxygen and carbon monoxide metallopophyrin complexes

Abstract The infrared stretching values for O 2 bound to Co, Fe, and Mn porphyrins are reported. It is noted for similar complexes, ν(O 2 ) is insensitive to variations in the metal center or axial base. The value of ν(O 2 ) for O 2 adducts of tetraphenylporphyrinatomanganese (II) confirms earlier work that the O 2 moiety is bound in a peroxo-like manner. Also ν(CO) values are reported for the iron (II) porphyrin complexes.

Low-spin, five-co-ordinate, π-acid complexes of iron(II) porphyrins

The ligands, benzyl isocyanide, tri-n-butylphosphine, and triethyl phosphite form five-co-ordinate adducts with FeII(Cap), which are shown to be lowspin (S= 0).