Table 1.
Conductivity measurements and analytical results of HL Schiff base and its complexes.
| Compound | Molecular Weight |
Color | Melting Point (°C) |
Ω * (µS) | CHNM% | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| C% | H% | N% | M% ** | |||||||
| Calc. Found |
Calc. Found |
Calc. Found |
A | B | Calc. | |||||
| HL(C20H24N2 O2) | 324.42 | Canary-yellow | 159 | --- | 74.05 74.10 |
7.46 7.51 |
8.63 8.55 |
--- | --- | --- |
| [Cu(L)(H2O)]Cl.H2O | 458.48 | Dirty green | >280 | 40 | 52.40 52.42 |
5.94 5.32 |
6.11 5.92 |
13.23 | 13.71 | 13.86 |
| [Ni(L)2] | 705.53 | Apple green | >280 | 8 | 68.10 68.22 |
6.57 6.62 |
7.94 7.89 |
8.20 | 8.09 | 8.32 |
| [Co(L)2]1/2H2O | 714.78 | Brick brown | >280 | 10 | 66.36 66.42 |
6.72 6.73 |
7.83 7.72 |
8.03 | 8.24 | 8.14 |
| [Gd(L)2(H2O)2](NO3).3/2H2O | 929.16 | Buff | >280 | 100 | 51.66 50.35 |
5.38 5.89 |
7.52 7.42 |
--- | 16.16 | 16.45 |
| [Sm(L)2(H2O)2](NO3).2H2O | 931.25 | Yellow-orange | >280 | 108 | 51.55 51.60 |
5.80 5.85 |
7.52 7.48 |
--- | 16.03 | 16.14 |
* 10−3 M in DMSO, ohm−1 cm2 mol−1. ** A = complexometric titration and B = thermo-gravimetric analysis.