π-Ruthenium Complexes of Hexaphyrins(1.1.1.1.1.1): A Triple-Decker Complex Bearing Two Ruthenoarene Units.

Ruthenium(II) π-coordination onto [28]hexaphyrins(1.1.1.1.1.1) has been accomplished. Reactions of bis-AuIII and mono-AuIII complexes of hexakis(pentafluorophenyl) [28]hexaphyrin with [RuCl2 (p-cymene)]2 in the presence of NaOAc gave the corresponding π-ruthenium complexes, in which the [(p-cymene)Ru]II fragment sat on the deprotonated side pyrrole. A similar reaction of the bis-PdII [26]hexaphyrin complex afforded a triple-decker complex, in which the two [(p-cymene)Ru]II fragments sat on both sides of the center of the [26]hexaphyrin framework.