A silyl cation with a three-center si-h-si bond.
The unusually high kinetic stability of the silyl cation 1 is due to the presence of a three-center, two-electron Si-H-Si bond. NMR data ((1) H, (2) H, (13) C, (29) Si) are consistent with the static, symmetrical structure shown, which was further corroborated by the results of density functional calculations.
Müller
T
T
Institut für Anorganische Chemie der Goethe Universität Frankfurt Marie-Curie-Strasse 11, 60439 Frankfurt am Main, Germany, Fax: (+49) 69-798-29188. Dr.Thomas.Müller@chemie.uni-frankfurt.de.
NMR spectroscopy; cations; density functional calculations; isotope effects; silicon