Both soluble and insoluble polysilanes and an insoluble polygermane have been prepared in high yield and at moderate temperatures from the interactions of alkylaryl-, diaryl-, and dialkyl-dichlorosilanes and diphenyldichlorogermane with sodium sand in the presence of 1,4,7,10,13-pentaoxacyclopentadecane (15-crown-5) in refluxing diethyl ether.
R. H. Cragg, R. G. Jones, A. C. Swain and S. J. Webb, J. Chem. Soc., Chem. Commun., 1990, 1147 DOI: 10.1039/C39900001147
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