Table 1 Elemental analyses of H2L and the isolated metal complexes
Compound (formula; M.Wt. g/mol) | Color | M.P. (°C) | Elemental analysis % Found (calculated) | |||
|---|---|---|---|---|---|---|
C | H | N | M | |||
H2L (C12H10N2O3; 232.22) | Beige | 190 | 62.86 (62.61) | 4.48 (4.38) | 12.61 (12.17) | – |
[Co(HL)2] (C24H18CoN4O6;517.36) | Brown | > 300 | 55.41 (55.72) | 3.83 (3.51) | 11.06 (10.83) | 11.55 (11.39) |
[Ni(HL)2] (C24H18NiN4O6; 517.12) | Orange | > 300 | 55.48 (55.74) | 3.72 (3.51) | 11.18 (10.83) | 10.90 (11.35) |
[Cu(HL)2] (C24H18CuN4O6; 521.98) | Pale green | > 300 | 55.63 (55.23) | 3.28 (3.48) | 11.35 (10.73) | 11.82 (12.17) |
[Zn(HL)2](H2O) (C24H20ZnN4O7; 541.83) | Yellow | > 300 | 53.19 (53.20) | 3.75 (3.72) | 9.93 (10.34) | 11.80 (12.07) |