Table 5: Groups absorbing in IR region of purified product MYN7.


Range (cm −1) Assignment

3628 O-H (free)
3348 N-H (2 -amines) stretching
2923 CH 3, CH 2 & CH2 or 3 bands
2853 CH 3, CH 2 & CH 2 or 3 bands
1636 N-H (2¡-amide) II band bending
1439 -N=N
1410 -O-H
1388 CH 3