LAUSR

Abstract The discrete coordination compound [Cu4Cl8(3)4(MeOH)2] is obtained from the reaction of a chloroform solution of 1-(3,2′:6′,3″-terpyridin-4′-yl)ferrocene (3) with a methanol solution of CuCl2; the single crystal structure of [{Cu4Cl8(3)4(MeOH)2}·0.7CHCl3·1.8MeOH] is described. Two {Cu2Cl4(3)2(MeOH)} units are connected by bridging chlorido ligands to generate a centrosymmetric tetranuclear molecule featuring face-to-face π-interactions between ferrocene units and between tpy domains. Intermolecular π-stacking of ferrocene and tpy units lead to quadruple-decker stacking motifs in the solid-state. The tetranuclear compound represents a pair of μ-Cl bridged Cu(II) dimers exhibiting a weak antiferromagnetic coupling via the bridging chlorido ligands. The redox behavior of 3 has been investigated by cyclic voltammetry and spectroelectrochemistry; a ferrocenyl oxidation process is observed for [Cu4Cl8(3)4(MeOH)2].