Advances in Chemistry / 2014 / Article / Tab 2

Research Article

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.

CompoundM.W./°CMass loss/%
found (calculated)
AssignmentResidual/%
found (calculated)

L1484.26220–330
340–520
12.00 (11.97)
68.23 (68)
C2H5
C12H8N
19.87 (20)

[Co2L1(H2O)2]2AcO579.60150–220
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)

[Mn2L1(H2O)2]2AcO575.6090–200
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)

L2512.69300–50076.32 (76.17)C14H13N24.04 (23.83)

[Co2L2(H2O)2]2AcO607.65200–500
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)

[Mn2L2(H2O)2]2AcO603.6690–150
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.