(Naphthalene-2,3-diolato-κO,O')[tris-(2-pyridyl-meth-yl)amine-κN]cobalt(III) hexa-fluoridophosphate 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 octa-hedral geometry by four N atoms from a tris-(2-pyridyl-meth-yl)amine ligand and two O atoms from a naphthalene-2,3-diolate ligand. The asymmetric unit contains two complex cations, two hexa-fluoridophosphate anions and one uncoordinated water mol-ecule. In one of the hexa-fluoridophosphate 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 mol-ecules are connected by O-H⋯O and O-H⋯F hydrogen bonds. π-π inter-actions are present between the pyridine rings [centroid-centroid distance = 3.814†(1)†à ].