Synthesis, Spectroscopic Behavior, and Photoinduced Reactivity of Tetraacylgermanes

J. Radebner, M. Leypold, A. Eibel, Janine Maier, L. Schuh, A. Torvisco, R. Fischer, N. Moszner, G. Gescheidt, H. Stueger, M. Haas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Acylgermanes have been subject of great interest recently because of their low toxicity and the applicability as sources for germanium-centered radicals for visible-light induced free radical polymerization processes. We report on a novel and versatile method for the synthesis of tetraacylgermanes allowing the preparation of various tetra-substituted acylgermanes 1a–m. The formation of these derivatives was confirmed by NMR spectroscopy, mass spectrometry, and X-ray crystallography. UV–vis absorption spectra of the prepared compounds reveal absorption in the visible region. This transition was assigned by TD-DFT calculations. It enabled a general screening of the influence of different substitution patterns on the absorption properties. The radical formation upon irradiation was confirmed by TR-EPR spectroscopy.
Original languageEnglish
Pages (from-to)3624-3632
Issue number18
Publication statusPublished - 2017

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