Vi. Pergushov, Rotational mobility of equivalent to SiOC center dot X-2 radicals "grafted" to the activated surface of aerosil, RUSS J PH C, 75(5), 2001, pp. 766-769
The rotational mobility times of "grafted" drop SiOC .X-2 radicals were det
ermined in a wide temperature range, which made it possible to estimate the
activation energies of motions that resulted in averaging of Zeeman and hy
perfine interactions in radicals of this type at elevated temperatures.