Stability of cadmium(II) complexes with glycinate ion in dimethyl sulfoxide aqueous solutions
| Dublin Core | PKP Metadata Items | Metadata for this Document | |
| 1. | Title | Title of document | Stability of cadmium(II) complexes with glycinate ion in dimethyl sulfoxide aqueous solutions |
| 2. | Creator | Author's name, affiliation, country | V. А. Isaeva; Ivanovo State University of Chemistry and Technology; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | O. A. Bezrukova; Ivanovo State University of Chemistry and Technology; Russian Federation |
| 3. | Subject | Discipline(s) | |
| 3. | Subject | Keyword(s) | glycinate ion; cadmium(II); complexation; stability constant; water-dimethyl sulfoxide solvent |
| 4. | Description | Abstract | The stability constants of cadmium(II) complexes with glycine anion in aqueous dimethyl sulfoxide solutions were determined by potentiometric titration at a temperature of 298 K and an ionic strength of 0.1 M solutions at sodium perchlorate background. When the concentration of dimethyl sulfoxide in the solution increases, an increase in the stability of cadmium(II) glycinates is observed. The obtained data are compared with the literature values of stability constants in aqueous solutions of dimethylsudium oxide glycinate complexes with d-metal ions, as well as cadmium(II) complexes with N,O-donor ligands. The Gibbs energies of the cadmium(II) glycinate complex transfer from water to aqueous dimethyl sulfoxide were calculated using the literature data. The contribution of the reactants' resolvation to the Gibbs energy change of the complex formation was considered. We concluded that the increased stability of cadmium(II) glycinate in aqueous solutions of dimethyl sulfoxide is mainly due to a weakening of the solvate state of the ligand. |
| 5. | Publisher | Organizing agency, location | ФИЦ КазНЦ РАН |
| 6. | Contributor | Sponsor(s) |
Ministry of Science and Higher Education of the Russian Federation |
| 7. | Date | (DD-MM-YYYY) | 30.12.2024 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | Research Article |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | https://rjonco.com/0044-460X/article/view/676663 |
| 10. | Identifier | Digital Object Identifier (DOI) | 10.31857/S0044460X24110062 |
| 10. | Identifier | eLIBRARY Document Number (EDN) | QXOMJA |
| 11. | Source | Title; vol., no. (year) | Žurnal obŝej himii; Vol 94, No 11-12 (2024) |
| 12. | Language | English=en | ru |
| 13. | Relation | Supp. Files |
Fig. 1. Diagram of the fractional distribution of particles relative to cadmium(II) ions depending on the pH of the aqueous solution (molar ratio Cd2+:Gly– = 1:3). (92KB) Fig. 2. The effect of the composition of the solvent mixture water–dimethylformamide (1) (µ = 1 M, 300 K [46]), water–ethanol (2) (µ = 0.15 M, 310 K [44, 45]), water–dimethyl sulfoxide (3) (µ = 0.1 M, 298 K) on the stability constant of cadmium(II) monoglycinate. (69KB) Fig. 3. Effect of the composition of the water-dimethyl sulfoxide solvent on the stability of monoligand complexes of cadmium(II) with ethylenediamine (1) (µ = 0.0 M, 298 K [47]), glycinate ion (2) (µ = 0.1 M, 298 K), tyrosinate ion (3) (µ = 0.5 M, 300 K [49, 50]), methylamine (4) (µ = 0.0 M, 298 K [48]). (66KB) Fig. 4. Effect of the composition of the aqueous-dimethyl sulfoxide solvent on the stability of the monoglycinate complex of copper(II) (1) (µ = 0.1 M, 298 K [59]), nickel(II) (2) (µ = 0.3 M, 298 K [58]), cobalt(II) (3) (µ = 0.1 M, 303 K) [57]), lead(II) (4) (µ = 0.5 M, 308 K, xDMSO = 0.0 [60]; µ = 0.1 M, 305 K, xDMSO = 0.2 [61]), cadmium(II) (5) (µ = 0.1 M, 298 K), silver(I) (6) (µ = 0.3 M, 298 K [55]), arsenic(II) (7) (µ = 1.0 M, 304 K [62]). (79KB) Fig. 5. Effect of the composition of the aqueous dimethyl sulfoxide solvent on the stability of monoglycinate (1, 3, 5) and bisglycinate (2, 4, 6) complexes of nickel(II) (1, 2) (µ = 0.3 M, 298 K [58]), lead(II) (3, 4) (µ = 0.5 M, 308 K, xDMSO = 0.0 [60]; µ = 0.1 M, 305 K, xDMSO = 0.2 [61]), cadmium(II) (5, 6) (µ = 0.1 M, 298 K). (80KB) Fig. 6. Change in the Gibbs energy of the reactions of formation of monoglycinate (2) (a) and bisglycinate (6) (b) complexes of cadmium(II) in water–DMSO mixtures and the Gibbs energy of transfer from water to a water-dimethylsulfoxide solvent of glycinate ion (1) [67], Cd2+ monoglycinate (3), Cd2+ ion (4) [66], and Cd2+ bisglycinate (5). (23KB) |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
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