Photoinduced single electron transfer reactions of bibenzyl and some of its derivatives

Spectroscopic characterization of photoaccumulated radical anions: a litmus test to evaluate the efficiency of photoinduced electron transfer (PET) processes

“…The accumulation of such species up to quantitative yield is demonstrated in neat MeCN. This can be related to extensive localization of the charge at the electronegative atoms, which makes these radical anions nonbasic and not nucleophilic [19,23,38]. In the second group, DCN gives a much less than unitary amount (ca.…”

“…In all of the above cases, the generated radical anion (A–Y •− ) is a persistent species easily detected by laser flash photolysis. This approach applies to a variety of donors, including amines [12–13], carboxylic acids or their derivatives [14–15], aliphatic acetals and ketals [16], ethers [17], organostannanes [18–19], organosilanes [20–22], aromatics [10,23–24], and even alkanes [25–27]. BET (path a') could ensue, thus leading to no chemical change.…”

Photoinduced Electron Transfer Bond Fragmentations

“…For most organic halides, electrochemical reduction is also irreversible . This Account will focus on a rich array of novel and relatively efficient bond fragmentation reactions which have been observed for radical cations of substituted amines and related compounds and the development of an understanding of their mechanisms. − There have also been several reports in the literature of studies on the fragmentation reactions of radical anions − which will not be covered in this Account.…”