Paul Roussel, Mark J. Drewitt, Douglas R. Cary, Catherine G. Webster and Dermot O’Hare
Di-{Co(Cp)} derivatives of But4-s-indacene (Ic′) have been prepared, they exist as both cis and trans isomers which can interconvert in solution; the solution electrochemistry of these complexes show that these bimetallic complexes can exhibit up to four redox events; unusually, attempted oxidation by a protic oxidising agent of (CoCp)2Ic results in attack at the central carbons of the indacene rings.