Research Article
Synthesis, Structural, and Antimicrobial Studies of Some New Coordination Compounds of Palladium(II) with Azomethines Derived from Amino Acids
Table 6
1H NMR spectral data of the ligands and their corresponding Pd(II) complexes.
| Compound | Chemical shift in ( ppm) | COOH | N–CH–C | –CH2– | –C(CH 3)N– | –CH–CH 3 | H3C–CH–CH3 | Aromatic protons |
| L1H | 11.52 (s) | — | 4.22 (s) | 1.83 (s) | — | — | (6.98–8.20) (m) | Pd(L1)2 | — | — | 4.26 (s) | 1.95 (s) | — | — | (6.92–8.12) (m) | L2H | 11.68 (s) | 4.48 (q) | — | 1.90 (s) | 1.48 (d) | — | (6.88–8.15) (m) | Pd(L2)2 | — | 4.68 (q) | — | 1.98 (s) | 1.50 (d) | — | (6.82–8.10) (m) | L3H | 11.54 (s) | 4.10 (d) | — | 1.94 (s) | 1.07 (d) | 2.39 (m) | (6.95–8.15) (m) | Pd(L3)2 | — | 4.16 (d) | — | 1.99 (s) | 1.10 (d) | 2.41 (m) | (6.85–8.10) (m) | L4H | 11.48 (s) | 4.49 (t) | 1.56 (q) | 1.87 (s) | 1.07 (d) | 0.98 (m) | (6.92–8.12) (m) | Pd(L4)2 | — | 4.54 (t) | 1.57 (q) | 1.94 (s) | 1.09 (d) | 1.01 (m) | (6.84–8.12) (m) | L5H | 11.56 (s) | — | 4.24 (s) | 1.85 (s) | — | — | (6.98–8.15) (m) | Pd(L5)2 | — | — | 4.26 (s) | 1.93 (s) | — | — | (6.95–8.15) (m) | L6H | 11.65 (s) | 4.53 (q) | — | 1.92 (s) | 1.47 (d) | — | (6.95–8.25) (m) | Pd(L6)2 | — | 4.75 (q) | — | 1.99 (s) | 1.51 (d) | — | (6.85–8.15) (m) | L7H | 11.59 (s) | 4.12 (d) | — | 1.91 (s) | 1.07 (d) | 2.38 (m) | (6.95–8.20) (m) | Pd(L7)2 | — | 4.16 (d) | — | 1.97 (s) | 1.10 (d) | 2.42 (m) | (6.80–8.05) (m) | Pd(L8)2 | — | 4.55 (t) | 1.58 (q) | 1.96 (s) | 1.10 (d) | 1.03 (m) | (6.80–8.10) (m) |
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