Rahul Sharma (Editor)

Trimethylsulfonium

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Molar mass  77.17 g/mol
Trimethylsulfonium wwwsigmaaldrichcomcontentdamsigmaaldrichstr

Trimethylsulfonium (systematically named trimethylsulfanium and trimethylsulfur(1+)) is an organic cation with the chemical formula (CH3)3S+ (also written as C
3
H
9
S+
). It is the simplest sulfonium cation.

Contents

Compounds

Several salts of trimethylsulfonium are known:

Preparation

Sulfonium compounds can be synthesised by treating a suitable alkyl halide with a thioether. For example, the reaction of dimethyl sulfide with iodomethane yields trimethylsulfonium iodide:

CH3–S–CH3 + CH3–I → (CH3)3SI

Related

An extra oxygen atom can bond to the sulfur atom to yield the trimethylsulfoxonium ion.

Use

Glyphosate herbicide is often supplied as a trimethylsulfonium salt. When mixed with aluminium bromide, or aluminium chloride or even hydrogen bromide, trimethylsulfonium bromide forms an ionic liquid, which melts at temperatures below standard conditions.

References

Trimethylsulfonium Wikipedia


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