Benzamidoximes. II. A 15N NMR study

A 15N NMR study of a series of arylamidoximes was performed at natural isotopic abundance in acetone-d6 and CDCl3 solutions. The chemical shifts and nitrogen–hydrogen coupling constants of these compounds are reported. The influence of the substituents on the aromatic ring has also been analyzed. A comparison of the nitrogen chemical shift data of these compounds in three solvents, viz., CDCl3, acetone-d6 and DMSO-d6 has shown a good correlation of the hydrogen bonding between the compound and the solvent. The electrostatic attraction between two molecules also explains the 15N chemical shifts.