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本文报道四种N-烷基-2-氨基吡啶盐及三种烷基铵盐的~1H核磁共振谱,~(13)C全偶合和宽带去偶核磁共振谱及~(13)C自旋-晶格弛豫时间。发现在N-烷基中与N直接成键碳的~1J_(OH)值具有加和性,并可表示为:~1J_(OH)=ε_X+ε_Y+ε_Z其中ε_X、ε_Y及ε_Z分别为取代基X,Y及Z对~1J_(OH)的贡献。此关系式对已发表的二十多种吡啶盐及铵盐的~1J_(OH)值都是成立的。
This paper reports the 1H nuclear magnetic resonance spectra, ~ (13) C coupled and broad band decoupled nuclear magnetic resonance spectra and ~ (13) C spin of four N-alkyl-2-aminopyridinium salts and three alkylammonium salts Lattice relaxation time. 1J_ (OH) value found to be directly bonded to N in N-alkyl groups is additive and can be expressed as: 1J_ (OH) = ε_X + ε_Y + ε_Z wherein ε_X, ε_Y and ε_Z are respectively substituted Contribution of X, Y and Z to ~ 1J_ (OH). This relationship holds true for the ~ 1J_ (OH) values of more than twenty published pyridinium and ammonium salts.