penultimate-unit effect

https://doi.org/10.1351/goldbook.15413
Phenomenon that the penultimate monomer unit preceding the active center on the terminal unit of an active polymer chain affects the reactivity of that active center.
See also: chain-end reactivity ratio
Source:
PAC, 2008, 80, 2163. (Glossary of terms related to kinetics, thermodynamics, and mechanisms of polymerization (IUPAC Recommendations 2008)) on page 2180 [Terms] [Paper]
Citation: 'penultimate-unit effect' 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.15413 RIS BibTex EndNote
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