Table 5 Thermogravimetric data of the mixed ligand complexes.
Mixed ligand complexes | Stage | Temp. range (°C) | Mass loss (%) | Evolved moiety | Residue (%) found (Calc.) | |
|---|---|---|---|---|---|---|
Calc | Found | |||||
[FeL(bpy)]Cl3·H2O | I | 45–388 | 20.23 | 20.27 | H2O(hyd.) and 1½Cl2 | FeC27H22N4O2 |
II | 388–710 | 70.69 | 70.81 | C6H5-CH3, 2C4H4O-CN and C10H8N2 | Fe; 8.92 (9.08) | |
[CoL(bpy)]Cl2·3H2O | I | 46–84 | 2.91 | 2.88 | H2O(hyd.) | CoC27H22N4O2Cl2·2H2O |
II | 85–155 | 5.83 | 5.82 | 2H2O(hyd.) | CoC27H22N4O2Cl2 | |
III | 155–357 | 24.74 | 24.63 | Cl2, ½N2 and C4H4O | CoC23H18N3O | |
IV | 357–378 | 2.26 | 2.23 | ½N2 | CoC22H17N3O | |
V | 379–642 | 48.26 | 48.32 | 2HC≡CH, C7H6 and C10H8N2 | CoO + 2C; 16.12 (16.00) | |
[CuL(bpy)]Cl2 | I | 62–448 | 49.70 | 49.46 | ½Cl2, ½N2, C4H3CN and C10H8N2 | CuC12H11O2Cl |
II | 448–612 | 36.33 | 36.28 | HC≡CH, C4H4O and C6H5-Cl | CuO; 14.26 (13.97) | |
[CdL(bpy)](NO3)2 | I | 63–225 | 4.02 | 4.05 | HCN | CdC26H21N5O8 |
II | 225–413 | 47.74 | 47.70 | 2NO2, O2, C3H4 and C10H8N2 | CdC13H9NO2 | |
III | 413–524 | 25.52 | 24.64 | C4H4O and C6H5-CN | CdO + 2C; 23.61 (22.72) | |
