(Naphthalene-2,3-diolato-κ(2) O,O′)[tris­(2-pyridyl­meth­yl)amine-κ(4) N]cobalt(III) hexa­fluoridophosphate hemihydrate

In the title complex, [Co(C(10)H(6)O(2))(C(18)H(18)N(4))]PF(6)·0.5H(2)O, the Co(III) ion is six-coordinated in a distorted octa­hedral geometry by four N atoms from a tris­(2-pyridyl­meth­yl)amine ligand and two O atoms from a naphthalene-2,3-diolate ligand. The asymmetric unit contains two complex cations, two hexa­fluoridophosphate anions and one uncoordinated water mol­ecule. In one of the hexa­fluoridophosphate anions, four of the F aroms are disordered over two sets of sites in a 0.632 (11):0.368 (11) ratio. In the crystal, the cations, anions and water mol­ecules are connected by O—H⋯O and O—H⋯F hydrogen bonds. π–π inter­actions are present between the pyridine rings [centroid–centroid distance = 3.814 (1) Å].