Abstract
The three branched oligogermanes (Me3Ge)3GePh, (Me2ButGe)3GePh, and (Me2PhGe)3GePh were synthesized via the hydrogermolysis reaction and were characterized by NMR (1H, 13C, and 73Ge) spectroscopy. In addition, these three compounds and (Bun3Ge)3GePh were analyzed using high resolution accurate mass mass spectrometry (HRAM-MS), which represents the first HRAM-MS investigation of branched oligogermanes. The effects of varying the substituent pattern on the peripheral R3Ge- groups on the electronic properties of these oligogermanes were investigated using cyclic and differential pulse voltammetry (CV and DPV), UV/visible spectroscopy, and 73Ge NMR spectroscopy. The CV, DPV, and 73Ge NMR data were compared to several previously reported branched oligogermanes, including (Bun3Ge)3GePh, (Ph3Ge)3GePh, (Ph3Ge)3GeH, and (Me3Ge)4Ge.
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