Table 1.
Elemental analyses, color, yields and melting points of the ligand and its metal complexes.
| Compound / (F.wt.) | Color | Yield (%) | M.p.(oC) | Elemental analysis, Found / (Calcd) % | Solubility | ||||
| C | H | N | Cl | M | |||||
| C16H12N3Cl (HL) (281) |
Deep yellow | 66 | 225 | 68.64
(68.21) |
4.62
(4.26) |
15.12
(14.92) |
13.20
(12.61) |
--- | Soluble in most common organic solvents |
| [Cu((L)2]·EtOH (1) C34H28N6OCl2Cu (670) |
Green | 33 | 287 | 61.23
(60.85) |
4.60
(4.18) |
12.92
(12.53) |
11.00
(10.59) |
10.00
(9.47) |
Soluble in DMF, DMSO, acetone and insoluble in methanol and ethanol |
| [Ni(L)2(OH2)2]·2EtOH (2) C36H38N6O4Cl2Ni (747) |
Pale Green | 25 | 220 | 58.23
(57.79) |
5.56
(5.08) |
11.44
(11.24) |
9.87
(9.50) |
8.23
(7.83) |
Soluble in DMF, DMSO, and insoluble in methanol and ethanol |
| [Co(L)2(OH2)2] (3) C32H26N6O2Cl2Co (656) | Brown | 34 | 260* | (58.54) | (3.96) | (12.80) | (10.82) | (8.99) | Soluble in DMF, DMSO, acetone and insoluble in methanol and ethanol |
| [Mn(L)2(OH2)2] (4) C32H26N6O2Cl2Mn (652) | Deep brown | 48 | 255 | 59.23
(58.90) |
4.30
(3.99) |
13.41
(12.88) |
11.21
(10.89) |
9.84
(8.44) |
Soluble in DMF, DMSO, acetone and insoluble in methanol and ethanol |
| [Fe(L)2(Cl)(OH2)2]·3EtOH (5) C38H44N6O5Cl3Fe (826) |
Reddish brown | 55 | 250* | 55.65
(55.17) |
5.72
(5.32) |
10.23
(10.16) |
13.11
(12.89) |
6.87
(6.78) |
Soluble in DMF, DMSO, acetone and insoluble in methanol and ethanol |
| [UO2(L)2(OEt)]·EtOH (6) C36H33N6O4Cl2U (922) |
Red | 75 | 225* | 46.95
(46.85) |
4.78
(3.58) |
9.32
(9.11) |
7.90
(7.70) |
26.11
(25.81) |
Soluble in DMF, DMSO, acetone and insoluble in methanol and ethanol |
* Decomposition point