Sulfinyl nitrenes are distinct from
sulfonyl nitrenes which have two oxygen atoms attached to the sulfur atom. or
thionylimide ([NSO]−) is an anion that exists as alkali metal salts. They can be formed by a tri-
tert-butoxy metal reaction with a
trimethylsilyl compound: :KOtBu + Me3SiNSO → K[NSO] + Me3SiOtBu NaNSO, KNSO, RbNSO, CsNSO, (Me2N)3S+NSO− and tris(dimethylamino)sulfonium [(Me2N)3S][NSO] salts are known. ==References==