Abstract
The title compound [Co(C5H7O2)2(C13H13P)(CH4O)]PF6·H2O, (I), which was converted from trans-[Co(acac)2(PMePh2)(H2O)]PF6 (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(PMePh2)(MeOH)]+, is similar to that of the above aqua complex found in the ClO4 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) Å. 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) Å], giving a centrosymmetric dimeric dicationic complex.
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