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. 2022 Nov 3;27(21):7540. doi: 10.3390/molecules27217540

Table 3.

Complexes formed from HL Schiff base TGA and DTG.

Compound Temp. Range
°C		 DTG Temp.
°C		 Mass Loss % Operation Expected Products Residue M %
Found Calcd. (Calcd.) Found
[Cu(L)(H2O)]Cl·H2O 22–110 69 3.68 3.93 Dehydration H2O CuO
(16.71)
17.1		 13.17
120–350 250 46.62 46.45 Coordination sphere + ligand decomposition H2O + HCl +
0.48 L
350–800 606 32.8 32.66 Final decomposition 0.46 L
[Ni(L)2] 50–291 234 15.35 15.67 ligand decomposition 0.17 L NiO
(10.55)
10.30		 8.09
300–396 338, 371 46.25 46.21 ligand decomposition 0.51 L
398–800 449 28.4 28.26 Final decomposition 0.31 L
[Co(L)2]·1/2H2O 51–170 64 1.25 1.31 Dehydration 1/2H2O CoO
(10.9)
10.62		 8.24
319–358 337 40.58 40.71 ligand decomposition 0.43 L
453–800 473 46.63 46.39 Final decomposition 0.49 L
[Gd(L)2(H2O)2](NO3)·3/2H2O 24–134 73 2.83 2.91 Dehydration 3/2H2O GdO
0.17 L ligand residue
(30.88)
29.47		 16.16
134–244 190 3.9 3.76 Coordination sphere 2H2O
250–448 330, 405 32.1 32.5 NO3 liberation + ligand decomposition HNO3 +
0.37 L
452–761 510, 630 29.7 30.03 Final decomposition 0.43 L
[Sm(L)2(H2O)2](NO3)
·2H2O		 30–171 83 3.65 3.87 Dehydration 2H2O SmO
0.11 ligand residue
(23.81)
24.31		 16.03
174–338 329 27.49 27.56 Coordination sphere + ligand decomposition 2H2O +
0.34 L
438–477 441 23.37 23.38 NO3 liberation + ligand decomposition HNO3 +
0.24 L
482–492 499 21.21 21.58 Final decomposition 0.31 L