(Insert Figure 9)
(Insert Table 4)
The TG curve for the iminic ligand (H2L) showed that it is thermally stable …show more content…
The complex (C1) presented a mass loss of 6.98% (Calcd. 7.30%) assigned to two chloride and a mass loss of 12.70% (Calcd. 12.37%). In the complex (C2) (111-413 ºC) is assigned to the loss of one cyanate and one nitrogen-carbon fragment and two C8H8O molecules resulting in a total mass loss of 36.73% (Calcd. 35.06%), accompanied by one endothermic peak at 202 ºC. The degradation of the complexes (C3-C5) occurs by the dehalogenation of the halides and pseudohalides. Dehalogenation occurs in two stages, although well-defined plateaus are not achieved. The first stage occurs between 108-260 °C, 123-246 °C and 105-469 °C, respectively, corresponding to the loss of one thiocyanate, one bromide and two iodides (found mass loss: 4.00, 5.05 and 17.15%, calc 4.32, 5.58 and 18.00%, respectively). The loss of mass in the second step, which varied from 260-387 °C, 246-375 °C and 469-661 °C, corresponds approximately to the release, respectively, of the three thiocyanates, three bromides and two iodides (found mass loss: 12.68, 15.15 and 17.15 %, calc.12.96, 13.55, 18.18%,