successor complex
The radical ion pair which forms by the transfer of an electron from the donor D to the acceptor A after these species have diffused together to form the precursor or encounter complex: \[\text{A}+\text{D}\rightarrow (\text{A D})\rightarrow (\text{A}^{\cdot - }\text{D}^{\cdot +})\]
PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1169 (