Term: long-range intramolecular interaction
https://doi.org/10.1351/goldbook.L03623

Definition:
An interaction between segments, widely separated in sequence along the chain, that occasionally approach one another during molecular flexing. This type of interaction is closely related to the excluded volume of a segment, the latter quantity reflecting interactions involving segments and solvent molecules. If no confusion can occur, the word 'intramolecular' may be omitted.

Related Terms:
1) sequence (http://doi.org/10.1351/goldbook.ST06775).
2) intramolecular (http://doi.org/10.1351/goldbook.I03130).

Source: Purple Book, 1st ed., p. 48 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'long-range intramolecular interaction' 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.L03623

License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.

Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.