Term: ladder chain
https://doi.org/10.1351/goldbook.L03440

Definition:
A double-strand chain, consisting of an uninterrupted sequence of rings, with adjacent rings having two or more atoms in common. Alternatively, a ladder chain is a double-strand chain with adjacent constitutional units joined to each other through four atoms, two on one side and two on the other side of each constitutional units.

Related Terms:
1) double-strand chain (<em>in polymers</em>) (http://doi.org/10.1351/goldbook.D01849).
2) constitutional unit (<em>in polymers</em>) (http://doi.org/10.1351/goldbook.C01288).
3) sequence (<em>in polymers</em>) (http://doi.org/10.1351/goldbook.ST06775).

Source: PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2295 (https://doi.org/10.1351/pac199668122287)

Citation: 'ladder chain' 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.L03440

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