Bromido(1,4,7,10,13-penta-aza-cyclo-hexa-deca-ne)cobalt(III) dibromide dihydrate

The title salt, [CoBr(C11H27N5)]Br2·2H2O, contains a complex cation with mirror symmetry and two Br(-) counter-anions that are likewise located on the mirror plane. The central Co(III) atom of the complex cation has one Br(-) ion in an axial position, one N atom of the penta-dentate macrocyclic ligand in the other axial position and four N atoms of the ligand in equatorial positions, defining a distorted octa-hedral coordination geometry. The macrocyclic ligand is coordinated to the Co(III) atom within a 5, 6, 5 arrangement of chelate rings in the equatorial plane of the four N atoms. Due to symmetry, the configuration of the chiral N atoms is 1RS, 4SR, 10RS, 13SR. In the crystal, N-H⋯Br, O-H⋯Br and N-H⋯O hydrogen bonds between the complex cation, anions and lattice water mol-ecules generate a three-dimensional network.