{2,2'-[N,N'-Bis(pyridin-2-ylmeth­yl)propane-1,3-diyldi(nitrilo)]di­acetato}­cobalt(III) hexa­fluoridophosphate aceto­nitrile 0.064-solvate

In the title compound, [Co(C₁₉H₂₂N₄O₄)]PF₆·0.064CH₃CN, commonly known as [Co(bppd)]PF₆·0.064CH₃CN, where bppd represents the historical ligand name N,N'-bis(2-pyridylmethyl)-1,3-diaminopropane-N,N'-diacetate, the Co^III atom is coordinated in a distorted octa­hedral geometry with an N₄O₂ donor atom set. The acetate O atoms, which exhibit monodentate coordination, are oriented in a trans configuration with respect to each other, whereas the pyridyl N atoms are coordinated in a cis configuration. The compound crystallizes with two crystallographically unique cations and two anions per asymmetric unit along with a disordered, partially occupied (occupancy = 0.128) aceto­nitrile solvent mol­ecule. Crystals of the title complex were found to be twinned by pseudomerohedry with a 180° rotation around [10-1] and a refined contribution of 90.5 (3)% of the major twin component.