Table 4: Kinetic parameters of Cu2+, Ni2+, and Pt4+ complexes evaluated by Horowitz-Metzger (HM) and Coats-Redfern (CR) methods.


Step Mid (Temp (K)) Method Ea (KJ/mol) A (S−1) ΔH* (KJ/mol) ΔS* (KJ/mol) ΔG* (KJ/mol)

Ni2+ complex
 1st 80 CR 36.9 2 × 104 34.03 −0.18 96.3
HM 42.61 1 × 106 39.68 −0.28 96.91
 2nd 295 CR 83.06 1.87 × 106 78.44 −0.13 150.8
HM 91.78 0.86 × 109 87.38 −0.28 150.78
 3rd 633 CR 142.92 0.9 × 107 137.58 −0.1 216.16
HM 156.93 0.41 × 1011 150.01 −0.29 216.67

Pt4+ complex
 1st 170 CR 109.56 1.58 × 109 106.69 −0.07 130.9
HM 118.25 1.16 × 107 113.97 −0.28 130.11
 2nd 450 CR 73.09 0.54 × 104 68.47 −0.13 167.89
HM 83.38 0.06 × 106 78.05 −0.28 167.18
 3rd 633 CR 387.47 1.35 × 1020 381.93 0.13 292.87
HM 399.57 0.58 × 1017 392.01 −0.3 292.27

Cu2+ complex
 1st 444 CR 117.17 4.32 × 1011 113.47 −0.025 124.79
HM 125.06 3.83 × 1012 121.37 −0.007 124.63
 2nd 710 CR 88.73 1.03 × 104 82.82 −0.175 207.4
HM 101.61 1.02 × 105 95.72 −0.156 206.43