| TU cm−1 | TTLaN cm−1 | Assignment Modes |
| 3380 | 3806.80 | n(N-H) |
| 3279 | 3259.98 | n(N-H) |
| 3190 | ----- | n(N-H) |
| 3177 | 3163.59 | n(N-H) |
| 1620 | ----- | d(N-H) |
| ---- | 1589.38 | d(N-H) |
| 1477 | 1464.83 | n(N-C-N) |
| 1414 | 1431.36 | n(C-S) |
| 1082 | 1088.91 | rNH2 |
| 730 | 730.17 | n(C-N) |
| ---- | 626.95 | n(C-N) |
| 494 | 493.44 | d(N-C-S) |