Table 1: Color, yield, elemental analyses, and mass spectra data for the reported compounds.
| Compound | Chemical formula | Color | Yield (%) | Elemental analyses, found (calcd.) | Mass spectra | μeff BM |
Molar conduct. Ω−1 mol−1 cm2 |
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| C (%) | H (%) | N (%) | MW | m/z | ||||||
| HL.H2O | C16H13N3O4 | Orange | 82 | 61.03 (61.73) | 3.72 (4.21) | 13.37 (13.50) | 311.30 | 294 [P−H2O]+ | — | — |
| [Co(L)2(H2O)2] | C32H24N6O8Co | Brown | 57 | 57.35 (56.56) | 3.37 (3.56) | 12.32 (12.37) | 679.51 | 680 [P]+ | 3.74 | 8 |
| [Ni(L)2(H2O)2] | C32H24N6O8Ni | Dark orange | 63 | 57.35 (56.58) | 3.37 (3.56) | 12.32 (12.37) | 679.28 | 680 [P]+ | 2.80 | 6 |
| [Cu(L)(H2O)]CH3COO | C18H15N3O6Cu | Dark brown | 65 | 51.83 (49.94) | 3.41 (3.49) | 10.07 (9.71) | 432.88 | 374 [P−CH3COO]+ | 1.40 | 8 |
| [Zn(L)(H2O)]CH3COO | C18H15N3O6Zn | Light yellow | 77 | 49.59 (49.73) | 3.06 (3.48) | 9.94 (9.67) | 434.72 | 376 [P−CH3COO]+ | — | 7 |
| [Pd(HL)Cl2] | C16H11N3O3Cl2Pd | Dark brown | 58 | 41.16 (40.84) | 2.66 (2.36) | 6.32 (8.93) | 470.59 | 471 [P]+ | — | 6 |