silyl radicals

https://doi.org/10.1351/goldbook.S05675
  1. In a strict sense, the silyl radical is H3Si·.
  2. A name commonly applied to the silicon-centered radicals R3Si·.
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1366 (https://doi.org/10.1351/pac199567081307)