DMPO Spin Trapping Study of the Photolysis of 2-(4-Nitrophenyl)-1H-indolyl-3-methyl Derivatives

The transient radical species generated in the photolysis of 2-(4-nitrophenyl)-1H-indoly-3-methyl (NPIM) derivatives were investigated by 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin trapping studies. The structures of the DMPO spin adducts were determined by electron paramagnetic resonance spectroscopy, mass spectrometry, and quantum chemical calculations. These results revealed that homolytic bond cleavage occurs in the photolysis of NPIM derivatives.

Automated summary

Transient radical species generated in the photolysis of 2-(4-nitrophenyl)-1H-indoly-3-methyl (NPIM) derivatives were studied using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin trapping studies. The structures of the DMPO spin adducts were determined through electron paramagnetic resonance spectroscopy, mass spectrometry, and quantum chemical calculations. The results revealed homolytic bond cleavage in the photolysis of NPIM derivatives.