ortho- and peri-fused

in polycyclic compounds
https://doi.org/10.1351/goldbook.O04333
Polycyclic compounds in which one ring contains two, and only two, atoms in common with each of two or more rings of a contiguous series of rings. Such compounds have n common faces and less than 2n common atoms. Examples:
molecule
Source:
Blue Book, p. 22 [Terms] [Book]
Citation: 'ortho- and peri-fused' 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.O04333 RIS BibTex EndNote
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