The pentamethylcyclopentadienyl radical: generation, electron spin resonance spectrum, and reaction kinetics
Abstract
The pentamethylcyclopentadienyl radical [a(15H) 6·4 G, a(13C) 3·5 G, g 2·0025], is formed by the photolysis of pentamethylcyclpentadiene, and under-goes self-reaction at a diffusion-controlled rate (2kt 2 × 109 l mol–1 s–1 at 25 °C) to give the dimer which redissociates on heating.