sulfenyl radicals

synonyms: thiyl radicals, alkylthio radical, sulfanyl radicals
https://doi.org/10.1351/goldbook.S06101
Sulfur-centered radicals having the structure $\ce{RS^{.}}$ ($\ce{R} \neq \ce{H}$). This term is derived from sulfenic acids. The synonymous term sulfanyl radicals is derived from sulfane, $\ce{H2S}$. E.g. $\ce{CH3S^{.}}$ methylsulfanyl or methanesulfenyl radical. An older synonymous term is alkylthio radical.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1368 [Terms] [Paper]