5732 Table I. Photolysis at 366 mp of 0.02 M 2,3-Diazabicycloheptene-2at 20 O ~
Sensitizer (concn, M ) E T , kcal4 Solvent Anthracene (0.053) Pyrene (0.050) P-Acetonaphthone (0.10) Phenanthrene (0.10) Phenanthrene (0.050) Thioxanthone (0.052) Triphenylene (0.108) Benzophenone (0.10)
42.6* 48.7 59.3 62.2 62.2 65.5 66.6 68.5
Toluene Hexane Hexane Hexane Toluene Toluene Toluene Hexane
kl,(l sec-1
@
2 . 7
