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.
Compound M.W. /°CMass loss/% found (calculated) Assignment Residual/% found (calculated) L1 484.26 220–330 340–520 12.00 (11.97) 68.23 (68) C2 H5 C12 H8 N 19.87 (20) [Co2 L1 (H2 O)2 ]2AcO 579.60 150–220 220–500 500–700 9.2 (10) 58.22 (57.35) 16.17 (16.5) C2 H5 C12 H8 N C5 H8 N2 10.80 (10) (Co) 6.54 (6.15) (H2 O) [Mn2 L1 (H2 O)2 ]2AcO 575.60 90–200 200–430 430–590 10.3 (10) 57.11 (57.75) 16.8 (16.6) C2 H5 C12 H8 N C5 H8 N2 9.61 (9.5) (Mn) 5.94 (6.2) (H2 O) L2 512.69 300–500 76.32 (76.17) C14 H13 N 24.04 (23.83) [Co2 L2 (H2 O)2 ]2AcO 607.65 200–500 830–900 54.91 (54.7) 20.48 (20.73) C12 H8 N C7 H14 N2 9.48 (9.69) (Co) 5.89 (5.92) (H2 O) 9.24 (8.96) (undetermined) [Mn2 L2 (H2 O)2 ]2AcO 603.66 90–150 150–320 400–490 10.16 (9.6) 55.23 (55) 20.9 (20.87) C2 H5 C12 H8 N C7 H14 N2 8.48 (9.1) (Mn) 5.23 (5.43) (H2 O)
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.