The preparation and X-ray crystal structures of 4-methyl-1,3,2-dithiazolium hexafluoroarsenate(V) and 5-methyl-1,3,2,4-dithiadiazolium hexafluoroarsenate(V) and their reduction to stable free radicals
Abstract
Acetonitrile, propyne, and acetylene react essentially quantitatively with S2NAsF6 to give the hexafluoroarsenate salts of 5-methyl-1,3,2,4-dithiadiazolium, 4-methyl-1,3,2-dithiazolium, and 1,3,2-dithiazolium respectively, the structures of the former two salts being determined by X-ray crystallography; the cations have been reduced chemically and electrolytically to form long-lived free redicals identified by their e.s.r. spectra.
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