Table 3: Infrared absorption spectral frequencies (cm-1) of complexes and their assignments.

Assignment CCplAMB CCprAMB CLrtAMB
N-H stretching in amino group 3440.1 3419.2 3419.2
CH3, C-H antisym. Stretching 2932.6 2958.7 2922.1
CH2, C-H symmetric stretching 2864.5 2864.5 2848.8
COO-, C-O antisym. Stretching 1590.0 1560.0 1575.0
C-H deformation vibration of –CH3 group 1515.0 1520.0 1470.0
C=N stretching 1425.6 1420.3 1415.1
C-N stretching (aryl tertiary) 1341.9 1336.6 1350.0
CH3 rocking 1116.9 1111.6 1100.0
C-H deformation (in plane) due to benzene ring 829.1 815.0 805.0
CH2 rocking 705.0 740.0 724.4
C-S stretching 682.6 672.1 635.5