(Naphthalene-2,3-diolato-κ 2 O,O′)[tris-(2-pyridyl- meth-yl)amine-κ 4 N]cobalt(III) hexa-fluoridophosphate hemihydrate

Abstract

In the title complex, [Co(C 10H 6O 2)(C 18H 18N 4)]PF6·0.5H 2O, 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) Å]. © Guo et al. 2011.