Magnetic-field effects on reactions of triradicals generated by photolysis of benzophenone–diphenylmethane–nitroxide trifunctional compounds

Magnetic-field effects on the decay kinetics of chain-linked triradicals have been investigated in acetonitrile at 293 K. The decay rate of the triradical linked by an 8-methylene chain was 1×107 s−1 under zero field and decreased with increasing field to attain a constant value of 2×106 s−1 at 2–10 T. These values were one order larger than those of the corresponding ketyl-diphenylmethyl biradical.