ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 34, Number 6
JKCSEZ 34(6)
December 20, 1990 

1H-nmr chemical shifts and lineshapes of amino-protons of acetamide (AA) in n-alcohols were determined. The chemical shifts are discussed by the Reichardt's solvent polarity parameter, ET(30). The following relationship between δobs and ET(30) was obtained. δobs = δo ＋ aET (30) ＋ b[ET(30)]2 where δo is the chemical shift of the solute in gaseous state or at ET(30) = 0, a is a characteristic constant for the protons of AA in n-alcohol solutions and b is a constant for the solute (AA)-solvent (n-alcohols) interaction. The barrier of the hindered rotation about the N-C(O) bond in AA was obtained by analysis of the lineshapes of the amino-protons in AA. The behavior of the internal rotation as well as chemical shifts of the amino-protons in AA has been found to be closely related to the ET(30) of n-alcohols.