Table 2.
Thermogravimetric analysis data for the ligands and copper(II) complexes.
| Compound | Temperature range (°C) | TG weight loss % calc./found | Assignments |
|---|---|---|---|
| 2a | 220–320 | 26.92 (26.13) | C4H6N2O |
| 320–790 | 20.08 (21.11) | C6H4 | |
| 790–925 | 8.2 (8.7) | NO | |
| 2b | 230–300 | 25.19 (24.28) | C5H10N2O |
| 300–780 | 20.33 (21.07) | C6H4O | |
| 780–953 | 26.74 (27.32) | C6H3NO2 | |
| 2c | 243–329 | 27.03 (26.09) | C5H8NO |
| 329–953 | 25.66 (25.43) | C6H5O | |
| 3a | 230–335 | 31.96 (31.04) | C12H8N4O4 |
| 335–650 | 19.51 (19.33) | C11H6N2 | |
| 650–951 | 9.3 (9.1) | CuO | |
| 3b | 210–295 | 12.14 (11.22) | C6H3N2 |
| 295–710 | 23.17 (22.78) | C9H7NO2Cl | |
| 710–953 | 9.3 (9.7) | CuO | |
| 3c | 165–230 | 5.15 (4.59) | C3H7N |
| 230–310 | 30.86 (31.16) | C12H6N4O4Cl2 | |
| 310–750 | 20.27 (19.95) | C12H6N3O2 | |
| 750–953 | 7.19 (8.07) | CuO |