Term: sulfonium compounds
https://doi.org/10.1351/goldbook.S06121

Definition:
Compounds having the structure R3S+ and associated anion (generally, but not necessarily, all three R groups are hydrocarbyl). E.g. [(CH3)3S]+Cl−, trimethylsulfonium chloride, or S06121.png

Related Terms:
1) anion (http://doi.org/10.1351/goldbook.A00358).
2) hydrocarbyl (http://doi.org/10.1351/goldbook.H02891).
3) onium compounds (http://doi.org/10.1351/goldbook.O04291).

Image: Not defined (https://goldbook.iupac.org/img/inline/S06121.png) 

Source: PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1369 (https://doi.org/10.1351/pac199567081307)

Citation: 'sulfonium compounds' 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.S06121

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