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Sulfonium
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<p>In <a href="/facts/Organic_chemistry/djxhxaNg">organic chemistry</a>, a sulfonium ion, also known as sulphonium ion or sulfanium ion, is a positively-charged <a href="/facts/Ion/3bePpDna">ion</a> (a "<a href="/facts/Cation/wrbwhF3z">cation</a>") featuring three organic <a href="/facts/Substitution_(chemistry)/zpqsbWAo">substituents</a> attached to <a href="/facts/Sulfur/IK0amTfM">sulfur</a>. These <a href="/facts/Organosulfur_compound/sUxSSXwD">organosulfur compounds</a> have the formula [SR3]+. Together with a negatively-charged <a href="/facts/Counterion/RNwGeM3l">counterion</a>, they give sulfonium salts. They are typically colorless solids that are <a href="/facts/Soluble/kLE9h3Jb">soluble</a> in polar <a href="/facts/Organic_solvent/LoMPMz8S">organic solvent</a>. </p>