| TU cm−1 | TTLaB cm−1 | Assignment Modes |
| 3380 | 3353.84 | n(N-H) |
| 3279 | 3251.54 | n(N-H) |
| 3177 | 3152.54 | n(N-H) |
| 3190 | 2685.12 | n(N-H) |
| 1620 | 1586.56 | d(N-H) |
| 1477 | 1465.51 | n(N-C-N) |
| 1414 | 1414 | n(C-S) |
| ---- | 1430.14 | n(C=S) |
| 1082 | 1092.58 | rNH2 |
| 730 | 730.16 | n(C-N) |
| 494 | 492.29 | d(N-C-S) |