Term: spiro macromolecule
https://doi.org/10.1351/goldbook.S05882

Definition:
A double-strand macromolecule consisting of an uninterrupted sequence of rings, with adjacent rings having only one atom in common. Alternatively, a spiro macromolecule is a double-strand macromolecule with adjacent constitutional units joined to each other through three atoms, two on one side and one on the other side of each constitutional units.

Related Terms:
1) double-strand macromolecule (http://doi.org/10.1351/goldbook.D01851).
2) constitutional unit (http://doi.org/10.1351/goldbook.C01288).
3) sequence (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: 'spiro macromolecule' 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.S05882

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