Barrier to internal rotation around the isopropyl-nitrogen bond of some N,N-diisopropyl-1,3-dithia- and 1,3-diselenacycloalkan-2-iminium salts, [X(CH2)nXCN(i-Pr)2]+Y- (X=S, Se; Y=Br, PF6; n=2,3).
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概要
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Activation parameters for rotation around the isopropyl-nitrogen bond of the title compounds were determined by the line shape analysis of <SUP>1</SUP>H NMR spectra. The <I>E</I><SUB>a</SUB> values lie in the ranges of 58–60 kJ/mol for X=S and 52–54 kJ/mol for X=Se. The activation parameters are little influenced by the ring size of the 1,3-diheteracycloalkane moiety and the counter anions.
- 公益社団法人 日本化学会の論文
著者
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Matsuda Tsuneo
Department Of Applied Chemistry Faculty Of Engineering Saitama University
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Tanaka Toshio
Department of Applied Chemistry, Faculty of Engineering, Osaka Univeristy
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Takeda Yu-ichi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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