Wave number (cm−1) | Assignments |
3330 | asymmetric N-H stretching |
3082 | asymmetric C-H stretching |
2782 | symmetric C-H stretching vibration of methyl group |
1966 | overtones and combinations |
1638 | C=C stretching due to the aromatic ring |
1549 | asymmetric stretching of NO2 group |
1494 | COO stretching |
1442 | -CH3 asymmetric bending |
1369 | -CH3 symmetric bending |
1315 | symmetric stretching of NO2 group |
1270 | C-O stretching |
1233 | N-H…S hydrogen bonding |
1158 | C-H bending |
1079 | Ρ (NH2) |
1051 | C-N stretching |
1022 | C-H bending (in plane) |
963 | C-H bending |
936 | C-H deformation |
907 | C-NO2 stretching |
894 | C-C-N symmetric stretching |
827 | NO2 scissoring |
794 | C-H bending (out of plane) |
751 | NO2 wagging |
698 | C-H bending (out of plane) |
546 | NO2 rocking |
522 | NO2 scissoring |
506 | δ(N-C-S) |