Table 2.
Main IR (ύ, cm−1) bands for MBOBT and its metal(II) complexes. (w = week, m = medium, s = strong.)
| Compound | υ(OH) | υ(NH) | υ(C=O) | υ(CH3) | υ(thioamide) | |||
|---|---|---|---|---|---|---|---|---|
| I | II | III | IV | |||||
| HL, C11H12N4SO | — | 3280s | 1644w | 294w7 | 1499vs | 1375m | 1073m | 836s |
| 3045w | ||||||||
| [L2Zn]⋅H2O, C22H24N8S2O3Zn | 3433m | 3230s | 1600w | 2996w | 149m7 | 1383m | 1046m | 720m |
| 3073w | ||||||||
| [L2Cu], C22H22N8S2O2Cu | — | 3228s | 1614w | 292w7 | 1499s | 1388s | 1050m | 734m |
| 3084w | ||||||||
| [L2Ni], C22H22N8S2O2Ni | — | 3328s | 1613w | 2929w | 1501m | 1391s | 1042m | 723m |
| [L2Co], C22H22N8S2O2Co | — | 3230s | 1616w | 2992w | 1496m | 1379s | 1039w | 718m |
| 3072w | ||||||||