Table 1.
Analytical and physical data of Schiff base ligand (H2L) and its metal complexes.
|
Compound (Molecular Formula) |
Colour (%yield) |
M.p. (°C) |
% Found (Calcd.) |
Λm Ω−1mol−1 cm2 |
μeff (BM) |
|||
|---|---|---|---|---|---|---|---|---|
|
C |
H |
N |
M |
|||||
|
H2L |
orange (92) |
190 |
66.39 (66.42) |
5.49 (5.53) |
11.01 (11.07) |
– |
– |
– |
|
[Cr(H2L)(H2O)2Cl]Cl2 ⋅ 2H2O |
yellow (85) |
>300 |
41.28 (41.34) |
4.64 (4.76) |
6.72 (6.89) |
8.41 (8.53) |
113 |
3.99 |
|
[Mn(H2L)(H2O)2Cl]Cl ⋅ 2H2O |
brown (84) |
206 |
43.18 (43.66) |
4.99 (5.02) |
7.20 (7.27) |
9.39 (9.52) |
63 |
5.41 |
|
[Fe(H2L)(H2O)2Cl]Cl2 |
brown (83) |
>300 |
43.37 (43.61) |
4.29 (4.33) |
7.19 (7.27) |
9.56 (9.69) |
103 |
5.28 |
|
[Ni(H2L)(H2O)]Cl2 ⋅ 4H2O |
green (80) |
>300 |
42.01 (42.06) |
5.07 (5.17) |
7.00 (7.01) |
9.71 (9.85) |
107 |
4.39 |
|
[Cu(H2L)Cl]Cl ⋅ 2H2O |
Greenish blue (86) |
>300 |
45.73 (45.82) |
4.43 (4.55) |
7.22 (7.64) |
11.18 (11.55) |
74 |
2.8 |
|
[Zn(H2L)(H2O)Cl2] ⋅ 2H2O |
Dark brown (84) |
169 |
43.83 (44.23) |
4.63 (4.74) |
7.30 (7.37) |
11.37 (11.41) |
24 |
Diamagnetic |
|
[Cd(H2L)(H2O)Cl2] |
brown (85) |
158 |
43.25 (43.39) |
3.78 (3.96) |
7.21 (7.23) |
19.19 (19.35) |
9 |
Diamagnetic |