peripheral atom

in organic reaction mechanisms
https://doi.org/10.1351/goldbook.P04497
A secondary reference (non-core) atom which at some point in the mechanistic sequence is situated in the molecule containing the core atom(s).
Source:
PAC, 1989, 61, 23. (System for symbolic representation of reaction mechanisms (Recommendations 1988)) on page 27 [Terms] [Paper]
Citation: 'peripheral atom' 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.P04497 RIS BibTex EndNote
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