Table 4 Correlation coefficient, detection limit, stoichiometry of complexation and binding constants of both Isomers with metal ions
From: A comparative study of the metal binding behavior of alanine based bis-thiourea isomers
Lig-metal ion | Correlation coefficient | Detection limit | Complexation stoichiometry | Dissociation constant | |
|---|---|---|---|---|---|
Kd1 | Kd2 | ||||
Isomer1A-Fe3+ | 0.982 | 1.30 × 10−1 M | 1:4 | 5.45 × 10−17 M | 6.760 M |
Isomer1B-Fe3+ | 0.967 | 2.40 × 10−1 M | 1:4 | 3.81 × 10−17 M | 4.539 M |
Isomer1A-Fe2+ | 0.998 | 1.50 × 10−1 M | 1:4 | 1.42 × 10−18 M | 6.835 M |
Isomer1B-Fe2+ | 0.936 | 3.88 × 10−1 M | 1:4 | 1.15 × 10−17 M | 7.380 M |
Isomer1A-Cu2+ | 0.998 | 1.90 × 10−1 M | 1:4 | 6.04 × 10−18 M | 6.149 M |
Isomer1B-Cu2+ | 0.967 | 3.16 × 10−1 M | 1:4 | 5.92 × 10−17 M | 9.852 M |
Isomer1A-Pb2+ | 0.982 | 1.14 × 10−1 M | 1:4 | 2.84 × 10−17 M | 1.269 M |
Isomer1B-Pb2+ | 0.977 | 1.83 × 10−1 M | 1:4 | 5.69 × 10−17 M | 5.310 M |
Isomer1A-Hg2+ | 0.967 | 9.16 × 10−2 M | 1:4 | 9.57 × 10−17 M | 5.201 M |
Isomer1B-Hg2+ | 0.98 | 2.10 × 10−1 M | 1:4 | 5.56 × 10−18 M | 7.916 M |
Isomer1A-Ag+ | 0.997 | 2.02 × 10−1 M | 1:4 | 6.87 × 10−18 M | 4.557 M |
Isomer1B-Ag+ | 0.989 | 7.23 × 10−1 M | 1:4 | 1.64 × 10−17 M | 1.717 M |