| Compound | υ (H2O) | υ (NH2) | υ (C=O ) | υ (C-N) | υ (C=S) | υ (M-O) | υ (M-N) |
| L1 | - | 3433b | 1624w | 1577s | - | - | - |
| L1 + Co(II) | 3548w 808s | 3392b | 1618s | 1586s | - | 582 | 472 |
| L1 + Ni(II) | 3542w 868s | 3378b | 1609s | 1584s | - | 578 | 469 |
| L1 + Cu(II) | 3553w 896s | 3355b | 1616w | 1588s | - | 586 | 467 |
| L2 | - | 3413b | 1690s | 1536s | - | - | - |
| L2 + Co(II) | 3537w 987s | 3400b | 1674s | 1587s | - | 572 | 469 |
| L2 + Ni(II) | 3543w 972s | 3370b | 1680s | 1583s | - | 577 | 466 |
| L2 + Cu(II) | 3539w 924s | 3362b | 1673s | 1591s | - | 583 | 468 |