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- W2043920834 abstract "Les trois amines 15N-méthylaniline, 15N-méthylphénylpropargylamine et 15N-méthylphénylpropynylamine ont été étudiées par RMN du 1H et 13C. Les grandeurs des couplages 1J(15N13C) et 1J(15N13C) indiquent que l'hybridation de l'azote est intermédiaire entre sp3 et sp2 dans le 15N-méthylaniline et la 15N-méthylphénylpropargylamine mais est sp2 dans l'amine α-acétylénique. La valeur du couplage 1J(15N13Csp), calculée à l'aide de la relation de Binsch, est plus faible que la valeur expérimentale, ce qui suggère que les mécanismes orbitalaire et dipolaire apportent une contribution non négligeable à ce couplage. 1H and 13C NMR spectra of 15N-methylaniline, 15N-methylphenylpropargylamine and 15N-methylphenylpropynylamine have been studied. The s character of nitrogen, deduced from 1J(15N13C) and 1J(15N13C), indicates that nitrogen hybridisation is intermediate between sp3 and sp2 in 15N-methylaniline and 15N-methylphenylpropargylamine, while nitrogen is sp2 in the α-acetylenic amine. The 1J(15N13Csp)cou pling constant calculated with the help of Binsch's relation does not agree with the experimental value, suggesting that orbital and dipolar mechanisms make substantial contributions to this coupling constant." @default.
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- W2043920834 date "1976-03-01" @default.
- W2043920834 modified "2023-09-27" @default.
- W2043920834 title "Amines α et β acétyléniques. CouplagesJ(15NH),J(15N13C) et hybridation de l'azote" @default.
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- W2043920834 doi "https://doi.org/10.1002/mrc.1270080303" @default.
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