Metal oxidation promoted C-H activation in manganese complexes of N-confused porphyrin

Research demonstrates the C-H activation during metalation of the N-confused porphyrin tautomers. Data indicate that the C-H activation is brought about via the aerobic metal oxidation promoting the dissociation of an inner-core proton on the pyrrole ring, which changes the N-confused porphyrin conformation to a planar porphyrin ring, forming manganese complexes.