Unusual structure of molecular complexes of metal tetraarylporphinates with simple aromatic ?-acceptors 1. Tetraphenylporphinatocobalt(II)

Abstract

1H NMR was used to show that aromatic nitrocompound (ANC) molecules are located not on the periphery of porphyrin in molecular complexes which are formed between meso-tetraphenylporphinatocobalt (II) and ANC in chloroform solutions, as was assumed earlier, but directly over the metal ion. The stability of the molecular complexes increases substantially with increasing number of nitro groups in the ANC.