These results indicate that, under the experimental conditions used, the mechanism of the sensitized reactioii does not involve a primary removal of a hydrogen Atom from the chlorophyll. However, it is not justifiable to conclude that this primary step is excluded from the mechanisms of other chlorophyll-sensitized reactions or of this same reaction occurring in other solvents (eg, methanol). The slowness of dark exchange between chlorophyll and ...
![2,4-Imidazolidinedione,5-[(2,4-dichlorophenyl)methylene]- Structure](https://image.chemsrc.com/caspic/363/6331-80-2.png)