TABLE 3.
Thermogravimetric data of the five metal complexes.
| Complex | Step | Temp. range | Weight loss % found (calc.) | Assignments | Total mass loss/% found (calc.) | Final solid state residue found (calc.) |
|---|---|---|---|---|---|---|
| [Cu(SCZ)2Cl]Cl.2H2O | 1st | 150–160 | 4.5 (5) | 2H2O | 79.8 (79.9) | CuO 11.3 (11.3) |
| 2nd | 205–240 | 75.3 (74.7) | 2HCl+2SO2+4N2+7C2H4 | |||
| [Co(SCZ)2ClOH2]Cl.2H2O | 1st | 164–172 | 10.1 (10.5) | 2H2O+C2H2+2NH3 | 75.3 (76.1) | CoO+10C 17.4 (18.5) |
| 2nd | 215–246 | 65.2 (65.6) | 2HCl+2SO2+3N2+4C2H2 | |||
| [Zn(SCZ)2]Cl2 | One step | 217–260 | 72.7 (71.9) | 2HCl+2HSO2+4N2+4C2H4 | 72.7 (71.9) | ZnO+7C 20.7 (20.1) |
| [Fe(SCZ)2Cl2].3H2O | 1st | 115–131 | 8.9 (7.8) | 3 H2O | 59.39 (58.9) | Fe2O3+8C 26.49 (27.83) |
| 2nd | 157–177 | 22.5 (23) | 2CN+5C2H2 | |||
| 3rd | 302.33–340 | 13.4 (13.1) | 2N2+SO2 | |||
| 4th | 625–660 | 14.59 (15) | 2N2+SO2 | |||
| [Ni(SCZ)2Cl2].2H2O | 1st | 80–94 | 10.8 (10.5) | 2H2O+2C2H2 | 73.7 (74.4) | NiO+8C 23.2 (23.5) |
| 2nd | 199–234 | 62.9 (63.9) | 2HCl+2SO2+4N2+4C2H2 |