Cobalt(iii) Complexes of the Tetradentate Macrocycle 2, 12-Dimethyl-3, 7, 11, 17-Tetraazabicyclo(11.3.1)heptadeca-1(17), 2, 11, 13, 15-Pentaene

A series of cobalt(III) complexes of 2,12-dimethyl-3,7,11,17-tetraazabicyclo(11.3.1)heptadeca-1 (17),2,11,13,15-pentaene, CR, has been prepared. In addition to materials of common compositions and structures, the series includes a diiodo complex, a complex containing a bidentate nitrate ligand, an NO− derivative, and one in which ethylenediamine acts as a monodentate ligand with a dangling, unprotonated primary amine group.