Table 2. Selected FTIR Data of IQL and its Cu(II) Complexes.
| Group | IQL | CuL | CuL2 |
|---|---|---|---|
| OH | 3742 | 3726 | 3728 |
| C–O | 1308 | 1334 | 1322 |
| M ← OHR | 3457 | 3468 | |
| sNH2 | 1734 | 1644 | 1647 |
| v(C=N) | 1601 | 1603 | 1606 |
| 1560 | 1569 | 1578 | |
| M ← O | 596 | 591 | |
| M ← N | 530, 457 | 500, 458 |
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