Table 7: Thermal decomposition data of ligand and its complexes.
| Compound | Activation energy “Ea” (kJmol−1) |
Frequency factor “Z” (sec−1) |
Entropy change “ΔS” (Jmole−1K−1) |
Enthalpy change “ΔH” (Jmole−1) |
Free energy change “ΔG” (kJmol−1) |
Correlation coefficient “r” |
| H2L | 9.55 | 9.15 × 104 | −270.40 | 4.6 × 104 | 165.84 | 0.914 |
| [Ti(L)(Cl)(H2O)2] | 17.75 | 2.83 × 102 | −242.56 | 5.8 × 104 | 172.09 | 0.998 |
| [Cr(L)(Cl)(H2O)2] | 18.78 | 2.26 × 103 | −263.64 | 8.3 × 104 | 185.67 | 0.919 |
| [Fe(L)(Cl)(H2O)2] | 19.84 | 3.59 × 102 | −248.11 | 4.2 × 105 | 207.87 | 0.987 |
| [WO2(L)(H2O)] | 13.19 | 1.15 × 102 | −241.93 | 9.2 × 104 | 207.46 | 0.968 |
| [Th(L)(NO3)2(H2O)] | 12.93 | 7.98 × 103 | −253.90 | 1.3 × 104 | 188.88 | 0.978 |
| [UO2(L)(CH3OH)] | 15.21 | 2.77 × 102 | −241.95 | 6.4 × 105 | 157.85 | 0.963 |