Table 2 Significant (IR) spectral bands (cm−1) of the ligand (PTHAC, L) and its metal complexes(1–3)
Compd | V (H2O) | V(NH1) | V(NH2) | V(NH4) | V(C = O) | V(C = N) | V(N–N) | V(C = S) | V(C-S) | V(M–O) | V(M–N) | V(M-S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. | ||||||||||||
L | 3422 | 3239 | 3191 | 4141 | 1704 | - | 920 | 718 | – | – | – | – |
(1) | 3418 | 3062 | – | 3021 | 1736 | 1623 | 953 | – | 687 | 566 | 380 | 446 |
(2) | 3407 | 3213 | – | 3054 | 1684 | 1670 | 923 | – | 676 | 524 | 369 | 439 |
(3) | 3407 | 3200 | – | 3128 | 1667 | 1620 | 971 | – | 679 | 529 | 372 | 436 |