Ligand | Keff/pH 7.2 toward Vanadium(+5) | Keff/pH 7.2toward Vanadium(+4) | Vanadium(+4)/Vanadium(+5) Affinity Ratio | Ligands Bound to mol Vanadium(+4) (pH 2.7) |
---|---|---|---|---|
mol | ||||
EDTA | 1.4 × 104 M−1 | 4.1 × 104 M−1 | 2.93 | 1.0 |
Picolinate | 1.4 × 103 M−1 | 5.8 × 103 M−1 | 4.14 | N.D. |
Maltolate | 1.24 × 103 M−1 | 2.07 × 103 M−1 | 1.67 | 3–4 |
l-Glu(γ)HXM | 1.9 × 102 M−1 | 1.65 × 102 M−1 | 0.87 | 3–4 |
l-Asp(β)HXM | 1.4 × 102 M−1 | 1.84 × 102 M−1 | 1.31 | 3–4 |
l-Ile(α)XHM | 1.35 × 102 M−1 | 0.47 × 102 M−1 | 0.35 | 1.0 |
N.D., not determined.