Table 5.

Thermogravimetric data of the mixed ligand complexes.

Mixed ligand complexes	Stage	Temp. range (°C)	Mass loss (%)		Evolved moiety	Residue (%) found (Calc.)
			Calc	Found
[FeL(bpy)]Cl3·H2O	I	45–388	20.23	20.27	H2O(hyd.) and 1½Cl2	FeC27H22N4O2
	II	388–710	70.69	70.81	C6H5-CH3, 2C4H4O-CN and C10H8N2	Fe; 8.92 (9.08)
[CoL(bpy)]Cl2·3H2O	I	46–84	2.91	2.88	H2O(hyd.)	CoC27H22N4O2Cl2·2H2O
	II	85–155	5.83	5.82	2H2O(hyd.)	CoC27H22N4O2Cl2
	III	155–357	24.74	24.63	Cl2, ½N2 and C4H4O	CoC23H18N3O
	IV	357–378	2.26	2.23	½N2	CoC22H17N3O
	V	379–642	48.26	48.32	2HC≡CH, C7H6 and C10H8N2	CoO + 2C; 16.12 (16.00)
[CuL(bpy)]Cl2	I	62–448	49.70	49.46	½Cl2, ½N2, C4H3CN and C10H8N2	CuC12H11O2Cl
	II	448–612	36.33	36.28	HC≡CH, C4H4O and C6H5-Cl	CuO; 14.26 (13.97)
[CdL(bpy)](NO3)2	I	63–225	4.02	4.05	HCN	CdC26H21N5O8
	II	225–413	47.74	47.70	2NO2, O2, C3H4 and C10H8N2	CdC13H9NO2
	III	413–524	25.52	24.64	C4H4O and C6H5-CN	CdO + 2C; 23.61 (22.72)