Amino-sulphur-fluorine derivatives as fluoride ion donors: preparation of three- and four-coordinated cations of sulphur (IV) and (VI) [1,2] |
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Authors: | R Mews H Henle |
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Institution: | Anorganisch-Chemisches Institut der Universität Göttingen, Tammannstraße 4, D-3400 Göttingen West Germany |
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Abstract: | Pentacoordinated aminosulphur (IV) trifluorides, R2NF3, (in this paper the lone pair in S(IV)-derivatives is always considered as a ligand) and aminosulphur(VI)-oxidetrifluorides, R2NS(O)F3, readily lose a fluoride ion to Lewis acids (AsF5, SbF5, BF3) to give sulphur-containing cationic species R2NF2]+ and R2NS(O)F2]+ with tetracoordinated sulphur. Tetracoordinated neutral dialkylaminosulphur(IV)-oxidefluorides, R2N(O)F, and amino-imino sulphur(IV)fluorides, R2N(=NRf)F, give three-coordinated sulphur cations R2NO]+] or R2NNRf]+.The three-coordinated sulphur(VI)cation R2NS(O)NR]+ has also been formed. |
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