Phosphaalkenylidene bridged ferrocenes

▶ An extended π-system consisting of alternating ferrocene and phosphaalkene units was prepared. ▶ The charge distribution within this oligomer and its isomers has been analyzed using DFT calculations. ▶ Mößbauer spectroscopy was used to distinguish the central and the terminal metallocene units. ▶ Mono- and di-lithiation of the primary ferrocenylphosphane have been reinvestigated.