Email Post: Bis{μ-4,4′-dimeth­oxy-2,2′-[propane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolato}bis­({4,4′-dimeth­oxy-2,2′-[propane-1,2-diylbis(nitrilo­methyl­idyne)]diphenol}manganese(III)) bis­(hexa­fluorido­phosphate)