Term: constitutional sequence
https://doi.org/10.1351/goldbook.C01287

Definition:
The whole or part of a chain comprising one or more species of constitutional unit(s) in defined sequence.

Note: Constitutional sequences comprising two constitutional units are termed diads, those comprising three constitutional units triads, and so on. In order of increasing @ST06775@ lengths they are called tetrads, pentads, hexads, heptads, octads, nonads, decads, undecads, etc.

Related Terms:
1) sequence (http://doi.org/10.1351/goldbook.ST06775).
2) chain (<em>in polymers</em>) (http://doi.org/10.1351/goldbook.C00946).
3) constitutional unit(s) (<em>in polymers</em>) (http://doi.org/10.1351/goldbook.C01288).

Source: PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2299 (https://doi.org/10.1351/pac199668122287)

Citation: 'constitutional sequence' 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.C01287

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