bond-stretch isomers

https://doi.org/10.1351/goldbook.08148
Two (or more) molecules with the same spin multiplicity but with different lengths for one or more bonds.
Note: This feature arises because the potential-energy surface, which describes how the energy of the molecule depends on geometry, shows two (or more) minima that are not merely symmetry-related.
Source:
PAC, 2022, 94, 353. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)) on page 373 [Terms] [Paper]
Citation: 'bond-stretch isomers' 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.08148 RIS BibTex EndNote
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