Table 3.
Absorption maxima from electronic spectra, magnetic moments, and crystal field parameters for Schiff base (L) and its complexes.
| Compound | Absorption maxima (cm−1) | Assignments | µ eff (B.M.) | Crystal field parameters | ||
|---|---|---|---|---|---|---|
| 10Dq (cm1) | B (cm−1) | β | ||||
| L | 38460 28570 |
π → π* n → π* |
— | — | — | — |
| [CoL2(H2O)2] | 22936 19305 (ν 3) 9570 (ν 1) |
n → π* 4T1g(F) → 4T1g(P) 4T1g → 4T2g(F) |
4.78 | 1071 | 724 | 0.748 |
| [CuL2(H2O)2] | 23094 14290 (ν 1) |
n → π* d xy → d x2−y2 |
1.86 | 1429 | — | — |
| [NiL2(H2O)2] | 27070 24880 (ν 3) 16630 (ν 2) 10120 (ν 1) |
n → π* 3A2g(F) → 3T1g(P) 3A2g(F) → 3T1g(F) 3A2g(F) → 3T2g(F) |
3.12 | 1012 | 793 | 0.752 |
| [ZnL2(H2O)2] | 19800 | C.T. (L → M) | — | — | — | |