Spectroscopic study of the interaction between nitrogen dioxide and sublimed layers of iron(II) mesotetraphenylporphyrin

IR and electronic absorption spectroscopies with the use of isotopically su bstituted (NO2)-N-15 have shown that the reaction of nitrogen dioxide with sublimed layers of iron(II) mesotetraphenylporphyrin (FeTPP) has complex ch aracter and yields nitrate complex (FeTPP)-T-III . NO3-. The spectroscopic data obtained suggest that the initial stages of reaction results in struct ures in which NO2 is coordinated to FeTPP through the oxygen atom. Treatmen t of the sublimed FeTPP layers with a mixture of nitrogen oxide and dioxide result in the formation of the nitrosyl (FeTPP . NO) and nitro-nitrosyl (O 2N . FeTPP . NO) complexes in the sublimed layer.