Synthesis, Spectral Characterization, and Thermal and Cytotoxicity Studies of Cr(III), Ru(III), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) Complexes of Schiff Base Derived from 5-Hydroxymethylfuran-2-carbaldehyde

Table 7

Thermal decomposition steps of the Cr(III), Ni(II), and Cu(II) complexes in TG plots.

Complex	Temperature; range (°C)	Weight loss (%)		DTG peaks; (°C)	Assignments	Residue found%; (calc.%)
		Obs.	Cal.
[Cr(MFMAQ)Cl2]	372–423	45.59	45.62	418	−C6H5NOCl2	1/2Cr2O3; 19.71 (19.73)
	473–798	34.88	34.90	544	−C9H6NO0.5
[Ni(MFMAQ)Cl(H2O)]·2H2O	92–194	12.87	12.99	122, 163	−2H2O (hydrated) + H2O (coordinated)	NiO; 17.92 (17.97)
	313–444	43.18	43.22	398	−C9H6NOCl
	462–799	25.72	25.77	722	−C6H5NO
[Cu(MFMAQ)Cl(H2O)]	192–273	4.62	4.68	249	−H2O (coordinated)	CuO; 20.63 (20.68)
	293–484	46.95	46.99	326	−C9H7NOCl
	506–798	27.58	27.61	565	−C6H4NO