Determination of the 13C NMR chemical shifts in an a2u type iron(iii) porphyrin cation radical

Abstract

The ¹³C NMR chemical shifts of all the carbons in an a_2u type iron(III) porphyrin radical cation, [Fe(TPP)Cl]⁺, have been determined for the first time by the titration method as well as by the chemical shift correlation; they are 2230, 1050, and −1910 ppm for the α-pyrrole, β-pyrrole, and meso carbon atoms, respectively.