Bis[bis(trimethylsilyl)amino]silylene, an unstable divalent silicon compound

Gyu-Hwan Lee; Robert West; Thomas Müller

doi:10.1021/ja035374h

Bis[bis(trimethylsilyl)amino]silylene, an unstable divalent silicon compound

J Am Chem Soc. 2003 Jul 9;125(27):8114-5. doi: 10.1021/ja035374h.

Authors

Gyu-Hwan Lee¹, Robert West, Thomas Müller

Affiliation

¹ Department of Chemistry, Hannam University, Taejon 305-761, Korea.

PMID: 12837076
DOI: 10.1021/ja035374h

Abstract

The title compound, [(Me3Si)2N]2Si: (1), was prepared by the reduction of [(Me3Si)2N]2SiBr2 (2) with potassium graphite at -78 degrees C. Unlike the corresponding germanium and tin compounds, 1 is unstable, but it can be studied in solution at low temperatures. The 29Si NMR chemical shift of 1 measured at -20 degrees C was 223.9 ppm, in good agreement with a value obtained from model calculations of 233 ppm. Reaction of solutions of 1 with methanol or phenol gave the trapping products expected for the silylene, [(Me3Si)2N]2Si(H)OR (R = CH3, C6H5).