## Wikipedia - Elektronentransferkatalyse (de) electron-transfer catalysis

https://doi.org/10.1351/goldbook.E02012
The term indicates a @[email protected] of reactions such as shown in equations (1)–(3), leading from A to B :
 $\text{A} + \text{e}^{-} \rightarrow \text{A}^{\cdot- }$ (1) $\text{A}^{\cdot- } \rightarrow \text{B}^{\cdot- }$ (2) $\text{B}^{\cdot- } + \text{A} \rightarrow \text{B} + \text{A}^{\cdot- }$ (3)
An analogous @[email protected] involving radical cations (A+·, B+·) is also observed. The most notable example of electron-transfer @[email protected] 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 @[email protected], with the electron instead of the @[email protected] However, there is a difference between the two catalytic mechanisms, since the electron is not a true @[email protected], but rather behaves as the @[email protected] of a @[email protected] 'Electron-transfer induced @[email protected]' is a more appropriate term for the situation described by equations (1)–(3).
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1110 [Terms] [Paper]