Table A5.
Characteristic 1H NMR spectral parameters (medium values, ppm) of the Ac-HADH-NH2 ligand and zinc(II) containing system (Zn(II):L = 1.2:1, cL = 5 mM).
| His (1),(4) Hα | His (1),(4) Hβ | Asp Hα | Asp Hβ | Ala Hα | Ala Hβ | His (1),(4) Hδ | His (1),(4) Hε | |
|---|---|---|---|---|---|---|---|---|
| Ac-HADH-NH2, pH~6 | – | – | 4.59 | 2.62 | 4.30 | 1.30 | 8.11 | 7.12 |
| Zn(II)-Ac-HADH-NH2, pH~6 | 4.59 | 3.11 | 4.68 | 2.70 | 4.38 | 1.36 | 7.90 | 7.02 |
| Ac-HADH-NH2, pH~8.2 | 4.56 | 3.11 | 4.56 | 2.64 | 4.30 | 1.30 | 7.68 | 6.95 |
| Zn(II)-Ac-HADH-NH2, pH~8.2 | 3.94 | 3.04 | 4.56 | 2.67 | 4.10 | 1.33 | 7.84 | 7.01 |
| Ac-HADH-NH2, pH~10.8 | 4.55 | 3.09 | 4.55 | 2.62 | 4.30 | 1.34 | 7.68 | 6.94 |
| Zn(II)-Ac-HADH-NH2, pH~10.8 | 3.91 | 3.05 | 3.53 | 2.63 | 4.28 | 1.36 | 7.69 | 6.97 |