Abstract
Both powder and single-crystal ESR spectra of two paramagnetic species formed by γ-irradiation of bromomalonamide at 77°K have been obtained. One radical shows a large bromine hyperfine interaction plus a small proton interaction and the g, A(81Br) and e2qQ(81Br) tensors have been determined from an analysis of the spectra of the deuterated form. The data have been interpreted as favoring the structure · CHBrCONH2 for this species. The second fragment has been identified as CONH2, but ESR parameters are not reported since it has been studied previously. Neither species is stable at room temperature in the host crystal.
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