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- Dictionaryfluxional/ˈflʌkʃən(ə)l/
adjective
- 1. subject to flux.
- 2. relating to fluxions. dated
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In chemistry and molecular physics, fluxional (or non-rigid) molecules are molecules that undergo dynamics such that some or all of their atoms interchange between symmetry-equivalent positions. [1]
A number of compounds are known to rearrange from one structure to an entirely equivalent structure, sometimes with extraordinary facility. Such compounds are said to be to distinguish from tautomers (which usually involve rearrangements between nonequivalent structures).
Definition of Fluxional. What is Fluxional? A chemical species is said to be fluxional if it undergoes rapid degenerate rearrangements (generally detectable by methods which allow the observation of the behaviour of individual nuclei in a rearranged chemical species, e.g. NMR, X-ray).
Mar 31, 2015 · A fluxional molecule is one that undergoes a dynamic molecular process that interchanges two or more chemically and/or magnetically different groups a molecule.
A molecule that undergoes alternate very rapid rearrangements of its atoms and thus only has a specific structure for a very short period of time. For example, the molecule ClF3 has a T-shape at low temperatures (–60°C); at room temperature the fluorine atoms change position very rapidly and appear to have identical positions.
Aug 28, 2022 · For the present discussion, a fluxional molecule can be defined as one that undergoes an intramolecular reversible interchange between two or more conformations. Fluxionality is specified as intramolecular to differentiate from ligand exchange and complexation mechanisms, intermolecular processes.
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Fluxional molecules undergo dynamics such that atoms interchange between symmetry equivalent positions. Because virtually all molecules are fluxional in some respects, e.g. bond rotations in most organic compounds, the term fluxional depends on the context and the method used to assess the dynamics. Often, a molecule is considered fluxional if ...
