“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.