Table 2. Thermal Decomposition of the Prepared Complexes.

	TG (°C)	DTG (°C)	mass loss (%)		assignment	residue
			found	calculated
CrAz2	30–430	215	53.84	53.76	1H2O + C20H14O2Cl	Cr
	430–650	520	38.22	38.01	C12H8O2N4
MnAz2	30–420	295	52.29	52.19	2H2O + C20H14O2	Mn
	420–640	530	39.13	38.90	C12H8O2N4
FeAz2	30–440	255	53.24	53.42	1H2O + C20H14O2Cl	Fe
	440–680	540	37.91	37.77	C12H8O2N4