Synthesis, LIFDI Mass Spectrometry and Reactivity of Triacyl-Germenolates

The synthesis of stable triacylgermenolates 3 a,b was achieved by using a multiple silyl abstraction methodology. The formation of these new germenolates was confirmed by NMR spectroscopy and UV-Vis measurements. Moreover, for the triacylgermenolates 2 and 3 a LIFDI mass spectrometry to characterize these new compounds. Germenolates 3 a,b serve as a starting point for a new triaacylgermane 4 a and two octaacyldigermanes 4 c,d. The formation of these acylgermanes was confirmed by NMR spectroscopy, X-ray crystallography, UV-Vis measurements and mass spectrometry. The UV-Vis absorption spectra of 4 c,d show considerably increased band intensities due to the presence of eight chromophores.