Abstract
A previously unknown electron paramagnetic resonance (EPR) spectrum of the 1,2,4-trifluorobenzene radical anion in liquid solution in nonpolar solvent has been obtained by means of the optically detected EPR technique. On the basis of quantum chemical calculations, the observed fluorine hyperfine coupling values and their temperature dependence have been interpreted as a consequence of fast conformational exchange among different nonplanar structures.
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