Table 4: Thermal analyses data of the newly synthesized chelates.
| Compound | TGA temp. range (°C) | DTG temp (°C) | Mass loss calcd. % | TGA description | Residue |
| C14H7O7NClCr | 110–184 | 134 | 49.33 (48.64) | – The loss of p-chlorophenyl maleanilic acid ligand | Cr(CO)2 |
| Cr(CO)4L | 185–278 | 273.5 | 13.18 (12.13) | – The loss of 2CO groups | 37.49 (39.23) |
| C14H7O7NClMo | 110–271 | 190 | 43.02 (44.42) | – The loss of p-chlorophenyl maleanilic acid ligand | Mo(CO)4 |
| Mo(CO)4L | 57 (55.6) | ||||
| C14H7O7NClW | 131–280 | 169.69 | 34.6 (37.17) | – The loss of p-chlorophenyl maleanilic acid ligand | W(CO)2 |
| W(CO)4L | 280–350 | 252.52 | 4.33 (4.71) | – The loss of CO group | 46.09 (44.57) |
| 350–589 | 391.92 | 4.64 (4.71) | – The loss of CO group | ||