Photochemical reactions of carbazole with chloromethanes in organic media

The photochemistry of carbazole in different pure and mixtured organic solv ents that contain chloro atoms in their structure is studied. Depending on the properties of the medium photoinduced single electron transfer (PSET) p rocess is observed yielding 1-chloro and 3-chloro carbazoles as main produc ts. Carboalkoxy and formyl carbazoles are also obtained when irradiations a re performed in the presence of oxygen k(SV) k(Q) and phi for fluorescence emission of carbazole in the different organic media studied as well as con version of carbazole and products formation have been measured. The Rehm-We ller equation is used in order to evaluate the Delta G degrees(ET) of the P SET processes.