Term: substitution chain transfer
https://doi.org/10.1351/goldbook.08972

Definition:
Chain-transfer process that proceeds by a one-step substitution reaction.

Note: In radical polymerization the process is called homolytic substitution chain transfer and reaction is by a \(\rm{S}_{\rm{H}}2\) mechanism. An example of a chain-transfer agent that reacts by substitution chain transfer is a thiol.

Example: A chain-transfer agent that reacts by substitution chain transfer is a thiol.

Example: Array

Link: 
Related Term: chain-transfer agent (http://doi.org/10.1351/goldbook.08947).

Source: PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1126 (https://doi.org/10.1515/pac-2020-1211)

Citation: 'substitution chain transfer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08972

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