Re(CO)3‑Templated Formation of Aza(dibenzo)dipyrromethenes

The Re­(CO)3 unit was used to template the formation of aza­(dibenzopyrro)­methene (ADBM) in the presence of pyridine or N-methylimidazole. The products of these template reactions are six-coordinate complexes, with a facial arrangement of the carbonyls, a bidentate ADBM, and a sixth ligand (pyridine or N-methylimiadozle). Three types of ADBM ligands are produced from these reactions, depending on the degree of hydrolysis; bis­(imine)-terminated, bis­(oxo)-terminated, and mixed-imine/oxo chelates were formed.