1. Modern Approaches to Silylium Cations in Condensed Phase
2. In contrast, siliconium ions are positively charged species in which silicon has higher than four-coordination. Some authors prefer to restrict the term silylium ion to the fully tricoordinate form. See also:http://old.iupac.org/publications/books/rbook/Red_Book_2005.pdf.
3. Maerker, C.; Kapp, J.; Schleyer, P. v. R.InOrganosilicon Chemistry II;Auner, N.; Weis, J., Eds.VCH:Weinheim, Germany, 1996; pp329–358.
4. The Silylium Ion Problem, R3Si+. Bridging Organic and Inorganic Chemistry