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Table 3 Thermal behavior and kinetic parameters determined using the Coats–Redfern (CR) and Horowitz–Metzger (HM) operated for L1, L2, L3 and their complexes

From: Spectral, thermal, antimicrobial studies for silver(I) complexes of pyrazolone derivatives

Compounds Decompositi range(K) Ts(K) Method Parameter Ra SDb
E* (kJ mol−1) A (s−1) ΔS* (J mol−1 K−1) ΔH* (kJ mol−1) ΔG* (kJ mol−1)
L1 673–905 817 CR
HM
95.656
116.813
69.368 × 103
30.233 × 103
− 432.844
− 425.910
88.863
110.020
442.497
457.988
0.970
0.984
0.187
0.065
[Ag(L1)2(H2O)2]NO3 373–573 462 CR
HM
34.379
38.825
3.390 × 102
2.621 × 103
− 393.344
− 410.348
30.537
34.983
212.262
224.564
0.984
0.970
0.116
0.087
L2 453–645 546 CR
HM
31.931
40.983
37.451
672.979
− 373.640
− 397.656
27.391
36.443
231.398
253.563
0.943
0.945
0.207
0.112
[Ag(L2)2(H2O)2]NO3.H2O 689–881 801 CR
HM
79.284
93.856
6.618 × 103
113.45 × 103
− 413.475
− 437.099
72.624
87.196
403.817
437.312
0.945
0.940
0.220
0.116
L3 438–630 564 CR
HM
35.317
48.603
1.185 × 102
2.847 × 103
− 382.948
− 409.379
30.627
43.913
246.610
274.803
0.960
0.952
0.182
0.106
[Ag(L3)2(H2O)2]NO3 365–685 497 CR
HM
15.316
22.370
0.758
0.119 × 102
− 342.002
− 364.917
11.183
18.237
181.158
199.601
0.981
0.985
0.089
0.054
  1. aCorrelation coefficients of the Arrhenius plots and bStandard deviation