A bstract. Cyclohexane-azomethane mixtures in argon as diluent were converted by temperatures between 400 and 480 C in a stirred flow system. All products were analytically determined in a comprehensive way. In this way not only isomerie C, H,,-radicals, which were already known fromformer investigations, but also hitherto unknown C, H,,-radicals, especially the 3-methylcyclopentyl radical, could be detected as a recombination product ...