sulphonium salt

World English Dictionary
sulphonium compound or sulphonium salt (sʌlˈfəʊnɪəm)
 
n
any one of a class of salts derived by the addition of a proton to the sulphur atom of a thiol or thio-ether thus producing a positive ion (sulphonium ion)
 
sulphonium salt or sulphonium salt
 
n

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