Two kinds of the phosphorus-centered radicals produced from hydrogen atom abstraction by 2i2-diphenyl-l-picrylhydrazyl(DPPH) were trapped by Af-/ert-butyl-a-phenylnitrone(PBN) and 5,5-dimethyl-l-pyrroline N-oxide (DMPO), and investigated by means of EPR spectroscopy. The spin adducts with a characteristic hyperfine coupling constant(hfcc) caused by a phosphorus atom were observed. Based on the hfcc values caused by the phosphorus and hydrogen atoms the conformational positions of the adducts trapped by PEN and DMPO are discussed.
|Number of pages||7|
|Journal||Chemical Research in Chinese Universities|
|Publication status||Published - Dec 1 1999|
- Phosphorus-centered radical
- Spin trap
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