Isolation and reactivity of an alkyl-substituted germanium(I) radical anion (opens in new tab)

The isolation of low-valent main group radical species remains a fundamental challenge in synthetic chemistry due to their intrinsic instability. Herein, we report the successful isolation and full characterization of an alkyl-substituted germanium(I) radical anion predominantly stabilized by steric protection with minimal electronic perturbation. This radical anion exhibits thermal stability in both the solid state and in solution at ambient temperature, enabling thorough structural, spectro...