trans-(Methanol)(methyldiphenylphosphine)bis(pentane-2,4-dionato)cobalt(III) hexafluorophosphate hydrate

The title compound [Co(C(5)H(7)O(2))(2)(C(13)H(13)P)(CH(4)O)]PF(6).H(2)O, (I), which was converted from trans-[Co(acac)(2)(PMePh(2))(H(2)O)]PF(6) (acac is pentane-2,4-dionato) by recrystallization from aqueous methanol, has been confirmed as have a coordinated methanol ligand. The molecular structure of the complex cation, trans-[Co(acac)(2)(PMePh(2))(MeOH)](+), is similar to that of the above aqua complex found in the ClO(4) salt [Kashiwabara et al. (1995). Bull. Chem. Soc. Jpn, 68, 883-888]. The Co-O bond length for the coordinated methanol is 2.059 (3) A. There is an intermolecular hydrogen bond between the OH group of the coordinated methanol and one of the O atoms of the acac ligands in an adjacent complex cation [O5.O3' = 2.914 (4) A], giving a centrosymmetric dimeric dicationic complex.