Phenanthroline-Fused Phthalocyanine Analogues Having a Monovalent Corrole Inner Perimeter and 4nπ Nonaromatic Properties.

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Condensation of 4,5-bis(4-tert-butyl-2,6-dimethylphenoxy)phthalonitrile with 2,9-diamino-1,10-phenanthroline in the presence of M(OAc)2 (M = Ni, Pd, Zn) afforded a series of phenanthroline-fused phthalocyanine analogues with a 16 π-electron skeleton. While the arrangement of elements along the inner perimeter of these macrocycles is the same as that of the hitherto reported trivalent corroles, they represent the first example of porphyrinoids possessing a monovalent corrole inner perimeter and nonaromatic characteristics as revealed by their spectroscopic data and theoretical studies.