Table 2 Thermogravimetric data of L1, L2,L3 and their metal complexes
From: Spectral, thermal, antimicrobial studies for silver(I) complexes of pyrazolone derivatives
| Compounds | Decomposition | DTG max (◦C) | % Estimated (calculated) | Assignment | |
|---|---|---|---|---|---|
| Mass loss | Total mass loss | Lost species | |||
| L1 | First step | 190,310,544,800 | 92.36 (92.07) | 92.36 (92.07) | 8C2H2 + CO + NH3 + N2 |
| 305.19, C19H19ON3 | Residue | 7.64 (7.86) | 2C | ||
| [Ag(L1)2(H2O)2]NO3 | 1st step | 189 | 33.378 (33.062) | 86.526 (86. 86) | 9C2H2 + 2H2O |
| 816.65, AgC38H42N7O7 | Second step | 366,562, | 52.79 (53.798) | 8C2H2 + 4HCN + NO + 2NO2 | |
| Residue | 807,931 | 13.474 (13.14) | Ag | ||
| L2 | First step | 273,475,771 | 86.70(86.56) | 86.7(86.56) | 6C2H2 + + SO + N2 |
| 268, C15H12N2OS | Residue | 13.30(13.43) | 3C | ||
| [Ag(L2)2(H2O)2]NO3.H2O | First step | 99 | 2.08 (2.37) | 75. 90 (76.404) | H2O |
| 760.59, AgC30H30N5O8S2 | Second step | 203,528 | 73.82 (74.034) | 10C2H2 + 4HCN + 2H2O + NO2 + SO + SO2 | |
| Residue | 881 | 23.35 (23.596) | Ag + 6C | ||
| L3 | First step | 120, 291 | 70.55(71.23) | 99.834 (99.99) | 8C2H2 |
| 292, C18H16O2N2 | Second step | 518 | 28.604 (28.76) | 2CO + N2 | |
| [Ag(L3)2(H2O)2]NO3 | First step | 244 | 51.071 (50.60) | 82.241 (81.85) | 14C2H2 + 2H2O |
| 790.57, AgC36H36N5O9 | Second step | 534 | 31.17 (31.25) | C2H2 + CO + 2HCN + 3NO2 | |
| Residue | 677 | 17.76 (18.15) | Ag + 3C | ||
