Isolation of a Relatively Air-Stable, Bulky Silyl-Substituted, Neutral Silicon-Centered Radical

The bulky supersilyl-substituted (^tBu₃Si) silicon-centered radical 1 was synthesized and fully characterized by single-crystal X-ray crystallography, cyclic voltammetry (CV), and EPR spectroscopy. With its extremely sterically encumbered radical center, 1 is stable in the solid state in air for 16 hours without showing signs of decomposition. Thus 1 is the most robust trisilyl-substituted silyl radical to date and a promising candidate for application as electrode material in organic radical batteries. Furthermore, it was found to be a strong dehalogenation reagent and therefore might find application in organic syntheses.