Electronic and Steric Effects of the Peripheral Substitution in Deca‐ and Undecaaryl Metallocorroles

The first example of a copper decaarylcorrole, 6 , was isolated during the Suzuki cross‐coupling synthesis of the corresponding undecaaryl derivative 2c . Compounds 6 and 2c were demetalated to produce the free bases 7 and 8 , which were used to prepare the cobalt deca‐ and undecaarylcorroles 9 and 10 . The effects of meso versus β substituents in peraryl copper corroles is highlighted by an electrochemical study of nine saddled copper undecaarylcorroles. The crystal structures of 1c , 6 , 9 , and 10 illustrate the impact of the deca‐ and undecaaryl substitutions on the macrocycle conformation in metallocorroles.