Crystal structure of cyclic tris-(ferrocene-1,1'-di-yl).

The mol-ecular structure of the trinuclear title compound, [Fe3(C10H8)3] {systematic name: tris-[μ-(η(5):η(5))-1,1'-bi-cyclo-penta-dien-yl]tri-iron(II)}, consists of three ferrocene subunits (each with an eclipsed conformation) that are condensed via C-C bonds of the fulvalene moieties into a cyclic trimer. The angles between the planes of the cyclo-penta-dienyl (Cp) rings within the three fulvalene moieties are 76.1 (3), 80.9 (3) and 81.7 (3)°. In the crystal, C-H⋯π inter-actions between neighbouring mol-ecules lead to the cohesion of the structure.