亚胺结构最典型的1 775cm-1、1 720cm-1、1 370cm

The most typical characteristic peaks of the imine structure of 1 775 cm-1, 1 720 cm-1, 1 370 cm-1, and 725 cm-1 correspond to the C=O anti-symmetric coupling vibration and symmetric coupling vibration of the imide group and the CN group respectively. The stretching vibration and imine ring (or imine carbonyl) vibration absorption.

The most typical subamine structure of 1,775cm-1, 1,720cm-1, 1,370cm-1, and 725cm-1 characteristic peaks correspond to the C-O anti-coupling vibration and symmetrical coupling vibration of the acetamide group and the telescopic vibration of the C-N group, respectively, and the subamine ring (or absamine-based) vibration absorption.

The most typical characteristic peaks of 1 775 cm-1, 1 720 cm-1, 1 370 cm-1 and 725 cm-1 correspond to the antisymmetric and symmetric coupling vibrations of imide groups, the stretching vibration of C-N group and the vibration absorption of imine ring (or carbonyl group) respectively.