Add time:08/26/2019         Source:sciencedirect.com

The 1H NMR spectra of N-(3-pyridinyl) 3-pyridinecarboxamide, N-(3-pyridinyl)acetamide and 3-pyridinecarboxamide in different solvents have been assigned utilizing the COSY spectra, chemical shift and coupling constant correlations. The 1H NMR spectra, NOE experiments and MINDO/3 calculations have been utilized for obtaining information on the molecular conformation. The results suggest that in dilute solutions, the 3-pyridyl rings are not coplanar with the amide group, which is in trans orientation in all the three compounds.

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