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Issue 16, 2020
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Introduction of organogermyl functionalities to cage silsesquioxanes

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In this work, we present the first example of highly efficient platinum-catalyzed hydrosilylation of vinyl- and allylgermanes with different types of silsesquioxanes and spherosilicates. This protocol allows the straightforward introduction of organogermyl functionalities with alkyl chains linked to the silsesquioxane core with good yields and excellent selectivity. These derivatives may be applied as precursors for the development of advanced hybrid materials in the future. In addition, a comparison made between vinylsilanes and vinylgermanes showed a higher reactivity of germanium compounds in the hydrosilylation reaction. To the best of our knowledge, this is the first literature example of the functionalization of silsesquioxanes and spherosilicates with these types of germanium derivatives. The reaction parameters and kinetics were determined by in situ FT-IR. In addition, our research is supported by extensive data obtained from NMR measurements.

Graphical abstract: Introduction of organogermyl functionalities to cage silsesquioxanes

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Article information

14 Feb 2020
12 Mar 2020
First published
16 Mar 2020

Dalton Trans., 2020,49, 5055-5063
Article type

Introduction of organogermyl functionalities to cage silsesquioxanes

M. Grzelak, D. Frąckowiak, R. Januszewski and B. Marciniec, Dalton Trans., 2020, 49, 5055
DOI: 10.1039/D0DT00557F

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