Arsenic pentafluoride (AsF5) adds across the CC and CS double bonds of H2C = SF4, F3C-CH = SF4 and F2C = CH-SF, with the formation of AsF4-CHR-SF5 (R = H, CF3). In the case R = CF3, a stable compound is obtained. Crystallography reveals a structure with a trigonal bipyramidally coordinated arsenic and the carbon substituent in an equatorial position. For R = H, the primary product dimerizes to (F5S-CH2)2AsF2+ AsF6-. Its first hydrolysis product (F5S-CH2)2AsFO.AsF5 was identified via its crystal structure.
The epoxidation of two fluorinated pentafluorothio olefins, F5SCHCF2 and F5SCFCF2, was achieved by treatment with NaOCl under phase transfer catalytic conditions at lowered temperatures. Some reactions were run and it was found that in anionic reactions loss of the SF5 group generally occurred.
作者:Grelbig, Thomas、Poetter, Brigitte、Seppelt, Konrad
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Wessolowski, Holger; Roeschenthaler, Gerd-Volker; Winter, Rolf, Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 60, # 3/4, p. 201 - 208
作者:Wessolowski, Holger、Roeschenthaler, Gerd-Volker、Winter, Rolf、Gard, Gary L.
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Willenbring, Robert J.; Mohtasham, Javid; Winter, R., Canadian Journal of Chemistry, 1989, vol. 67, p. 2037 - 2040
作者:Willenbring, Robert J.、Mohtasham, Javid、Winter, R.、Gard, Gary L.