Table 2 Infrared spectral data for the ligand and complexes
Compounds | Infrared spectral data (cm−1) | ||||||
|---|---|---|---|---|---|---|---|
ν (2′-OH) | ν (4′-OH) | ν (OH)acid | ν (C=O)ketone | ν (C=O)acid | ν (N=N) | ν (Co–O) | |
11 | 3541 | 3249 | 2575 | 1726 | 1668 | 1446 | – |
12 | – | 3258 | – | 1713 | 1713 | 1446 | 528/548 |
13 | – | – | 2577 | 1748 | 1695 | 1450 | 530 |