Table 4: Thermoanalytical results (TG and DTG) of ML, FL complexes 1–6.
Compound | Temp. range (°C) | % Mass loss found (calcd.) | Assignment |
1 | 250–330 | 41.7 (42.7) | – The loss of 4-methoxybenzene + 2CO |
[Cr(CO)4ML] | 330–450 | 27.92 (29) | – The loss of 4-amino-4-oxobut-2-enoic acid |
2 | 130–180 | 22.44 (21.57) | – The loss of OH3C−C6H5 |
[Mo(CO)4ML] | 180–435 | 13.05 (12.18) | – The loss of HO−CH2−CH2−NH2 |
3 | 131–280 | 34.6 (37.32) | – The loss of ML maleanilic acid ligand |
[W(CO)4ML] | 280–350 | 4.33 (4.74) | – The loss of CO group |
350–589 | 4.64 (4.74) | – The loss of CO group | |
4 | 131.9–395.8 | 32.69 (30) | – The loss of p-fluoroaniline |
[Cr(CO)4FL] | 399–509 | 28.65 (26.8) | – The loss of (Z)-4-oxobut-2-enoic acid |
5 | 140.7–233.3 | 2.9 (3.8) | – The loss of fluorine |
[Mo(CO)4FL] | 233.3–431.3 | 37.76 (38.78) | – The loss of maleanilic acid ligand |
6 | 141–336 | 16.83 (17.81) | – The loss of p-fluoroaniline |
[W(CO)4FL] | 337–598 | 12.27 (9.88) | – The loss of (Z)-4-oxobut-2-enoic acid |