Proton Magnetic Resonance Spectra of Several Types of Substituted Ammonium Ions
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概要
- 論文の詳細を見る
Proton magnetic resonance spectra of substituted ammonium ions were studied in deuterium oxide, being classified in methylammonium, ethylammonium, β-substituted ethylammonium, and vinylammonium ions. The chemical shifts of the methyl groups are discussed in terms of inductive effects of other substituents on nitrogen atoms. From the internal chemical shifts of ethyl groups, the electronegativity of (Alkyl)_3N^+ were derived to be 3.16 according to Cavanaugh and Dailey's equation. Spin-coupling constants between ^<14>N and protons were usually observed in the cases where the electric field at the ^<14>N nucleus is thought to be homogeneous. We suggest that the sign of J_<14_<N-C-CH_3>> in ethyltrialkylammonium ions might be positive. Interestingly, spin-couplings between ^<14>N and the vinyl protons in trimethyl-vinylammonium bromide were evidently observed even at room temperature.
- 公益社団法人日本薬学会の論文
- 1967-03-25
著者
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通 和夫
Shionnogi Research Laboratory Shionogi and Co., Ltd.
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中川 俊夫
Shionogi Research Lab.
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岩田 辰夫
Shionogi Research Laboratories Shionogi & Co. Ltd.
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通 和夫
Shionogi Research Laboratory Shionogi & Co. Ltd.
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大鶴 真佐子
Shionogi Research Laboratory, Shionogi & Co., Ltd.
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青野 勝利
Shionogi Research Laboratory, Shionogi & Co., Ltd.
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大鶴 真佐子
Shionogi Research Laboratory Shionogi & Co. Ltd.
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青野 勝利
Shionogi Research Laboratory Shionogi & Co. Ltd.
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