Table 3: IR Spectral Data for Cu (II) Complexes.

S. No. Absorption Bands CP[PTU]A (cm–1) CP[PTU]NA (cm–1)
1 CH3 and CH2, C-H antisym. stretching 2920 2915
2 CH3 and CH2, C-H sym. Stretching 2848 2845
3 N-H bonding 1595 1598
4 COO–, C–O antisym. stretching 1510.1 1508.9
5 COO–, C–O sym. Stretching 1470 1475.8
6 CH2, C-H Bonding (d) (twisting and wagging) 1360.9 1395.2
7 CH3, C-H rocking 1110 1110.8
8 CH2, C-H rocking 725 720.7
9 Cu-N stretching 555.8 570
10 Cu-O stretching 505.6 495
11 NH2, N-H stretching 3410 3475
12 Ar-C-NO2 stretching - 1440
13 N-C=S stretching 1310 1315
14 C=S stretching 1170 1177
15 Ar-C-OCH3asym. stretching 1240 -
16 Ar-C-OCH3 sym. stretching 1025 -
17 C-H, Deformation ("oop") 825 835