Schwefel(VI)-oxid-chlorid-imide und Schwefel(VI)-oxid-fluorid-imide [1] / Sulfur(VI)-oxide-chloride-imides and Sulfur(VI)-oxide-fluoride-imides [1

Abstract

Abstract At room temperature in the presence of CsF sulfur-oxide-chloride-fluoride-imides RfNSOFCl (8) (Rf = CF3, C2F5, i-C3F7, C6F5) are formed from N-perfluoroalkyl-sulfinyl-imides and Cl2. At prolonged reaction times or higher temperatures the chloride is ex-changed and the difluorides RfNSOF2 are isolated in high yields. In the same way (CF3)2CFNS(O)ClCF3 (12) and (CF3)2CClNS(O)ClCF3 (13) are obtained from (CF3)2C = N-S(O)CF3 (9) and Cl2/CsF. 12 can be fluorinated by CsF to give (CF3)2CFNS(O)FCF3 (14). 14 is also observed, when fluorine is added to 9 via XeF2 in the presence of BF3, but mainly C-S-bond cleavage occurs. SF5NS(O)FCF(CF3)2 (19) was identified by spectroscopic methods from the reaction of SF5NSOF2 and CF3CF = CF2 in the presence of CsF.