863401-60-9Relevant academic research and scientific papers
Synthesis and physicochemical characterization of bis(macrocycles) involving a porphyrin and a meso-substituted corrole - X-ray crystal structure of a [(free-base porphyrin)-corrole]bis(pyridine)cobalt complex
Barbe, Jean-Michel,Burdet, Fabien,Espinosa, Enrique,Guilard, Roger
, p. 1032 - 1041 (2005)
A very efficient, simple synthesis of face-to-face porphyrin-corrole free-bases bearing substituents at the meso positions of the corrole ring is reported. Starting from the (porphyrin-aldehyde)zinc species 1Zn, porphyrin-corrole free-bases (3M, 3C) are obtained in two steps, in fairly good yields (40-43%), compared to 11 steps for their corrole β-pyrrole- substituted counterparts. Moreover, the possibility to directly synthesize the free-base (porphyrin-corrole)cobalt complex (5M or 5C) allows for the further preparation of heterodimetallic derivatives. Crystals of the bis(pyridine) adduct of 5M have been grown; the molecular structure clearly shows that the two pyridine molecules are coordinated to the cobalt ion in endo and exo positions, leading to an open-mouth geometry of the bis(macrocycle). The structure of 5M(py)2also shows intermolecular π-π interactions along the [100] direction, leading to stacking of the complexes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
