μ-Diborolyl triple-decker complexes with carbonyl ligands: Synthesis, structures and electrochemistry

The synthesis, structures, spectroelectrochemical behaviour as well as bonding of carbonyl-containing triple-decker complexes is described. IR-spectroscopical and computational data suggest that anion [CpCo(C3B2Me5)]− is stronger donor than Cp− but weaker than Cp*−.