1′,1′′′-Bis(ethynyl)biferrocenyl-Bridged Fe(dppe)Cp Units: Synthesis, Solid-State Structures, and Electronic Couplings - Lohan, Manja; Justaud, Frédéric; Roisnel, Thierry; Ecorchard, Petra; Lang, Heinrich; Lapinte, Claude (Organometallics, 2010)