electron-transfer catalysis

The term indicates a @ST06775@ of reactions such as shown in equations (1)–(3), leading from A to B :
\[\textrm{A} + \textrm{e}^{-} \rightarrow \textrm{A}^{\cdot- }\] (1)
\[\textrm{A}^{\cdot- } \rightarrow \textrm{B}^{\cdot- }\] (2)
\[\textrm{B}^{\cdot- } + \textrm{A} \rightarrow \textrm{B} + \textrm{A}^{\cdot- }\] (3)
An analogous @ST06775@ involving radical cations (A+., B+.) is also observed. The most notable example of electron-transfer @C00874@ is the \(\text{S}_{\text{RN}}1\) (or \(\text{T}+\text{D}_{\text{N}}+\text{A}_{\text{N}}\)) reaction of aromatic halides. The term has its origin in a suggested analogy to acid-base @C00874@, with the electron instead of the @P04906@. However, there is a difference between the two catalytic mechanisms, since the electron is not a true @C00876@, but rather behaves as the @I03043@ of a @C00960@. 'Electron-transfer induced @C00960@' is a more appropriate term for the situation described by equations (1)–(3).
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1110 [Terms] [Paper]