| Compounds | υs (coo)/m−1 | υas (coo)/cm−1 | Δ (υas − υs) | υ (co)/cm−1 | υ (C=N)/cm−1 |
| TTA |
|
|
| 1680 |
|
| Na2TPA | 1395 | 1563 | 168 |
|
|
| Phen |
|
|
|
| 1596 |
| EuL | 1397 | 1552 | 155 | 1603 | 1562 |
| Eu1.4Gd0.6L | 1398 | 1557 | 159 | 1604 | 1560 |
| Eu1.0Gd1.0L | 1399 | 1556 | 157 | 1609 | 1559 |
| Eu0.8Gd1.2L | 1401 | 1558 | 157 | 1605 | 1556 |