Study of Unusually High Rotational Barriers about SN Bonds in Nonafluorobutane-1-sulfonamides: The Electronic Nature of the Torsional Effect
作者:Ilya M. Lyapkalo、Hans-Ulrich Reissig、Andreas Schäfer、Armin Wagner
DOI:10.1002/hlca.200290006
日期:2002.12
bond in N,N-disubstituted nonafluorobutane-1-sulfonamides 1 can easily be detected by NMR measurements at room temperature. This effect causes magneticnonequivalence of otherwise identical geminal substituents in symmetrical staggered ground-state conformation A. The torsional barriers determined (62–71 kJ⋅mol−1) proved to be the highest ever observed for sulfonamide moieties. They are comparable to
Fluorine-containing dielectric media and capacitors employing such media
申请人:Pennwalt Corporation
公开号:US04899249A1
公开(公告)日:1990-02-06
A dielectric medium composition comprising a fluorine-containing amide or a fluorine-containing sulfonamide and capacitors or other electric devices incorporating said composition, are disclosed herein.
本文披露了一种含氟酰胺或含氟磺酰胺的介电介质组合物,以及包含该组合物的电容器或其他电器件。
Dielectric liquids
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0545430A1
公开(公告)日:1993-06-09
A dielectric liquid is provided comprising (a) a fluorinated, inert liquid, or a mixture of fluorinated, inert liquids and (b) a fluorine-containing, nonionic sulfonate ester or sulfonamide, such that the dielectric liquid has a dielectric constant intermediate or between that of component (a) and component (b) and the dielectric constant represents the relative amounts of the relatively lower dielectric constant of the fluorinated, inert liquid per se and the relatively higher dielectric constant of the sulfonate ester or sulfonamide per se and components (a) and (b) of the dielectric liquid are miscible with one another over the operating temperature range of the electrical device employing the dielectric liquid.