A series of oligogermanes, (Me 3 Si) 3 GeGeCl 3 , (C 6 F 5 ) 3 GeGePh 3 , (C 6 F 5 ) 3 GeGe(p-Tol) 3 , and (C 6 F 5 ) 2 Ge[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.

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