SEARCH Articles Figures Tables Intersystem crossing singlet phenyl nitrene Nitrene Nitrene singlet-triplet splitting Nitrenes Nitrenes fluoro-substituted singlets Nitrenes singlet aryl Nitrenes singlet dynamics Phenyl nitrene singlet lifetime Singlet nitrenes, aryl azides Singlet nitrenes, aryl azides produce Singlet nitrenes, reactions Singlet-triplet splitting, nitren