sulphonium compound

sulphonium compound

or

sulphonium salt

n
(Elements & Compounds) 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)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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