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Table 7 Decomposition steps of the complexes based on the thermogravimetric data

From: Spectral, thermal, molecular modeling and biological studies on mono- and binuclear complexes derived from oxalo bis(2,3-butanedionehydrazone)

Complex DTG maximum temp. (°C) Removing species Weight loss % Found (Calcd)
[Co(OBH)2Cl]Cl·½EtOH 60 - ½Cl2 + ½EtOH 6.36 (8.84)
319 - C16H24N4O6Cl 60.45 (61.05)
500 - C4H4N2 11.77 (12.11)
>500 [CoO4N2] (residue) 21.58 (22.82)
[Zr(OBH)Cl4]·2H2O 76 - (Cl2 + H2O) 16.12 (16.99)
313 - (H2O + C8H12N2O2) 37.67 (35.58)
449 - Cl2 12.44 (13.55)
>500 C2N2O2Zr (residue) 30.15 (33.67)
[VO(OBH-H)2]·H2O 59 - H2O 3.65 (3.04)
289 - C16H24N4O6 61.57 (62.24)
405–590 - C4H4N4O2 25.56 (23.67)
>600 V (residue) 7.45 (8.53)
[Cu(OBH)2Cl2]·2H2O 59 - 2H2O 4.29 (5.31)
291 - C16H24N4O6 54.90 (54.26)
374 - C4H4N4O3 25.56 (26.37)
>400 CuO (residue) 12.30 (11.71)
[Ni2(OBH)Cl4]·H2O·EtOH 72 - (EtOH + H2O) 13.51 (11.08)
368 - (Cl2 + C8H12N2O2) 40.20 (41.40)
470 - Cl2 11.20 (12.27)
550 - C2H2N2 8.00 (9.35)
>600 2 NiO (residue) 27.09 (25.87)
[Pd2(OBH)(H2O)2Cl4]·2H2O 75 - 2H2O 6.47 (5.83)
322 - 2H2O + 2Cl2 + C4H12 38.49 (38.48)