Synthesis and X-ray crystal structure of [S3N5Me2CO]AsF5, the first carbon-containing bicyclic sulphur–nitrogen compound. A bridged S3-ring

Abstract

An X-ray crystallographic study has shown that the new bicyclic cation [S₃N₅Me₂CO]⁺ contains a three-membered ring of sulphur atoms, which is bridged by three nitrogen atoms and a urethane group; this compound was prepared by the reaction of S₃N₃Cl₃ with Me₃SiNMeC(O)MeSiMe₃ in CCl₄.