Skip to main content

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