Cobalt(II) and Manganese(II) Complexes of Novel Schiff Bases, Synthesis, Charcterization, and Thermal, Antimicrobial, Electronic, and Catalytic Features

Table 2

Thermal analysis of the ligands and their complexes.

Compound	M.W.	/°C	Mass loss/%; found (calculated)	Assignment	Residual/%; found (calculated)
L^1	484.26	220–330; 340–520	12.00 (11.97); 68.23 (68)	C2H5; C12H8N	19.87 (20)
[Co2L^1(H2O)2]2AcO	579.60	150–220; 220–500; 500–700	9.2 (10); 58.22 (57.35); 16.17 (16.5)	C2H5; C12H8N; C5H8N2	10.80 (10) (Co); 6.54 (6.15) (H2O)
[Mn2L^1(H2O)2]2AcO	575.60	90–200; 200–430; 430–590	10.3 (10); 57.11 (57.75); 16.8 (16.6)	C2H5; C12H8N; C5H8N2	9.61 (9.5) (Mn); 5.94 (6.2) (H2O)
L^2	512.69	300–500	76.32 (76.17)	C14H13N	24.04 (23.83)
[Co2L^2(H2O)2]2AcO	607.65	200–500; 830–900	54.91 (54.7); 20.48 (20.73)	C12H8N; C7H14N2	9.48 (9.69) (Co); 5.89 (5.92) (H2O); 9.24 (8.96) (undetermined)
[Mn2L^2(H2O)2]2AcO	603.66	90–150; 150–320; 400–490	10.16 (9.6); 55.23 (55); 20.9 (20.87)	C2H5; C12H8N; C7H14N2	8.48 (9.1) (Mn); 5.23 (5.43) (H2O)

All thermal analyses were done under nitrogen atmosphere between the temperature ranges 30°C and 988°C at a heating rate of 10°C/min.