Effect of different solvent characteristics on the proton-ligand and SM+3-ligand formation constant of butanamide-3-[2-[(2-hydroxyphenyl methylene) amino]ethylimino]N-phenyl(BHPAP) in mixed solvents
Eid, MF; Mahmoud, FZ
| HERO ID | 1157480 |
|---|---|
| In Press | No |
| Year | 2003 |
| Title | Effect of different solvent characteristics on the proton-ligand and SM+3-ligand formation constant of butanamide-3-[2-[(2-hydroxyphenyl methylene) amino]ethylimino]N-phenyl(BHPAP) in mixed solvents |
| Authors | Eid, MF; Mahmoud, FZ |
| Journal | Journal of the Chinese Chemical Society |
| Volume | 50 |
| Issue | 4 |
| Page Numbers | 823-832 |
| Abstract | Complexes equilibrium of (BHPAP) with proton and Sm+3 ion has been measured in various mixed aqueous solvents, viz.; methanol-water, ethanol-water, acetone-water and dioxane-water. Based on potentiometric equilibrium measurements of hydrogen ion concentration at 30 degreesC, ionic strength 0.1 M KNO3 and in the above various mixed solvents, the values of protonation constant of BHPAP-Sm+3 complex have been evaluated. The variation of protonation and stability constants with the inverse of dielectric constant or mole fraction of solvent was studied. Application of Fuoss expression and consideration of electrostatic and non-electrostatic effects are made to explain the above constants.The solid complexes were isolated for each Pr+3 and Nd+3-BHPAP. Elemental analysis, conductance, infrared spectra, and electronic spectra for these solutions and TG, DTG and DTA measurements characterized these solids. The ligand behaves towards the metal ion as a dibasic tetradentate ligand.< |
| Doi | 10.1002/jccs.200300115 |
| Wosid | WOS:000185954900005 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000185954900005 |
| Is Public | Yes |
| Keyword | Schiff base; lanthanide ions; autoprotolysis constant |
| Is Qa | No |