2. Experimental

The molecular structure of the trinuclear title compound, [Fe3(C10H8)3] {systematic name: tris[-( 5:5)-1,10-bicyclo-pentadienyl]triiron(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 cyclopentadienyl (Cp) rings within the three fulvalene moieties are 76.1 (3), 80.9 (3) and 81.7 (3). In the crystal, C—H interactions between neighbouring molecules lead to the cohesion of the structure