Abstract
The title compound, [Co(C15H35N5)](ClO4)2, conventionally abbreviated [Co(Me5PACP)](ClO4)2, where Me5PACP is 1,4,7,10,13‐pentamethyl‐1,4,7,10,13‐pentaazacyclopentadecane, displays a significantly distorted trigonal–bipyramidal coordination geometry. The bond lengths and distances are comparable to those previously reported for cobalt(II) complexes with macrocyclic polyamine ligands. The N—Co—N angle for the axial sites is 160.4 (2)°. The perchlorate anions are not coordinated.