“Donor–Acceptor” Oligogermanes: Synthesis, Structure, and Electronic Properties

A series of oligogermanes, (Me₃Si)₃GeGeCl₃, (C₆F₅)₃GeGePh₃, (C₆F₅)₃GeGe­(p-Tol)₃, and (C₆F₅)₂Ge­[Ge­(p-Tol)₃]₂, containing substituents with different electronic properties at neighboring germanium atoms were synthesized. According to X-ray diffraction studies, UV/visible spectroscopy, and quantum chemical calculations, these “donor–acceptor” oligogermanes are characterized by energies of electronic transitions lower than those for other similar compounds.