Pentafluoroethyl -, cesium

When pentafluoroethylamine, which is stable only at low temperatures, is mixed with sulfur tetrafluoride, and the mixture is allowed to warm slowly from — 196 to 25 C in the presence of excess cesium fluoride, (pentafluoroethyl)iminosulfur difluoride (4) is obtained in 40% yield.198... 

When a mixture of cesium fluoride and pentafluoroethyl tellurium trifluoride was heated for one hour at 100°, cesium pentafluoroethyltetrafluorotellurate(IV) was obtained3. 

Cesium bis pentafluoroethyl]trifluorotellurate(IV) was prepared similarly3. The bis[tri-fluoromethyl]trichlorotellurates were similarly obtained from bis[trifluoromethyl]tellurium dichloride and the metal chlorides in acetonitrile at — 5°. The correspondings bi trifluoro-methyl]tribromotellurates(TV) were detected in solution by 19F-NMR spectroscopy but could not be isolated2. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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