TABLE 4.
TGA and DTA data of Zn(II), Cu(II) and Ni(II) complexes.
| Degradation Temp. (oC) | DTAmax (°C) | Weight loss (%) | Description | ||
|---|---|---|---|---|---|
| Obsd. | Calcd. | ||||
| 1 | 255–350 | 325 | 17.80 | 17.96 | Loss due to chloroethane (C2H5Cl) like moiety |
| 360–520 | 515 | 21.00 | 21.19 | Loss due to C6H4 species of quinoline ring | |
| 535–765 | 655 | 29.99 | 30.38 | Loss due to C5H5N2O moiety of the quinoline ring | |
| 2 | 100–225 | 213 | 41.69 | 41.44 | Loss of one water molecule, C3H6N2O and nitrate ion moiety |
| 240–498 | 245 | 7.26 | 7.00 | Loss of C2H5 ethane like moiety | |
| 520–640 | 530 | 32.14 | 31.89 | Loss due to C9H6N moiety of the quinoline ring | |
| 3 | 100–155 | 125 | 8.65 | 8.67 | Loss of two lattice water molecule |
| 220–255 | 229 | 10.23 | 10.13 | Loss of C2H4N moiety of imine | |
| 260–361 | 278 | 22.44 | 22.41 | Loss of CH3O + NO3 methanol and nitrate ion moiety | |
| 382–610 | 508 | 28.74 | 28.96 | Loss due to C8H9N, moiety of the quinoline ring | |