Complexation ability of kryptofix 22DD with lanthanum (III) cation in some binary mixed non-aqueous solvents

Rounaghi, Gholam Hossein; Bejestani, Azadeh Shafaie; Chamsaz, Mahmoud

doi:10.1007/s10847-012-0259-9

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…In addition, it has been indicated that the dissolvable additionally plays an extremely crucial role in binding selectivity and complex stability [10]. Although numerous studies upon complexation of cations of metal with macrocyclic ligand were made in watery and pure non-aqueous solvents, these complexation processes have been concentrated in the mixed non-aqueous solvent to a limited extend [11]. The solute-solvent and solvent-solvent interactions in mixed solvents, can create new solvent properties and, therefore, leading to the particular solventing Metal cation, ligand and even the complex in solution [12].…”

Section: Introductionmentioning

confidence: 99%

Complexation Study of Kryptofix22DD with Ag+ Cation in Some Mixed Non-aqueous Binaries Solutions

Eteya

2020

International Journal of Materials

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The complexation reactions between Kryptofix22DD, with Ag+ cation, was studied in acetonitrile-dimethylformamide (AN-DMF), acetonitrile- tetrahydrofuran(AN-THF), methanol- tetrahydrofuran (MeOH-THF) and methanol-dimethylformamide (MeOH-DMF) binary non-aqueous dissolvable arrangements at various temperatures utilizing the conductometric strategy. The conductance information shows that in all cases, the complex stoichiometry framed between the macrocyclic ligand and the metal cation is 1:1 [ML]. The experimental results indicate that in any event, the complex stoichiometry formed between the Ag+ and the Kryptofix22DD macrocyclic ligand is 1:1 (ML). The qualities the development constants of the complex have been amassed by plotting the molar conductivity bends-utilizing program, GENPLOT. A nonlinear relationship was observed between the complex's stability constant (log Kf) and the binary solvent composition. The values standard thermodynamic parameters (ΔHc° and ΔSc°) have been determined Dependence of the temperature of constant stability of the complex using van't Hoff plots. The results show that thermodynamic quantities are dependent on nature and Binary Solvent Composition solutions.

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Section: Introductionmentioning

confidence: 99%

Complexation Study of Kryptofix22DD with Ag+ Cation in Some Mixed Non-aqueous Binaries Solutions

Eteya

2020

International Journal of Materials

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“…2,9-Dihydroxy-1,10-diphenoxy-4,7-dithiadecane (hereafter designated as L) has been demonstrated to efficiently coordinate to transition and heavy metal cations [5]. Numerous experimental studies have been devoted to complexation between macrocyclic ligands and various metal cations in pure and binary solvents using (for example, [6][7][8][9]); however, to our knowledge, there has been no data on complexation between 2,9-dihydroxy-1,10-diphenoxy-4,7-dithiadecane and metal cations (Scheme 1).…”

mentioning

confidence: 99%

“…A number of physico-chemical techniques have been applied to study metal ions complexation [10][11][12][13][14][15][16][17][18]; conductometry has been recognized as a sensitive, simple, and cheap method to elucidate stoichiometry, stability, selectivity and thermodynamics of the complexes formation in solution. The mentioned parameters are often affected by nature and composition of the solvent [19][20][21].…”

mentioning

confidence: 99%

Complex formation between 2,9-dihydroxy-1,10-diphenoxy-4,7-dithiadecane and La3+, UO2 2+, Ce3+, and Y3+cations in acetonitrile-ethyl acetate binary media as studied by conductometry

et al. 2015

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Complexation between the 2,9-dihydroxy-1,10-diphenoxy-4,7-dithiadecane (DHDPDTD) ligand and La 3+ , UO 2 2+ , Ce 3+ , and Y 3+ cations has been studied by means of conductometry in acetonitrile-ethyl acetate binary mixtures over a range of temperature. Formation of the 1 : 1 complexes has been confirmed, and the complexes stability constants have been determined taking advantage of GENPLOT software. The complexes stability is affected by the metal ion nature and the solvent composition. The ligand selectivity towards metal ions depends on the solvent composition. In detail, the complexes stability decreases in the Ce 3+ ≈ UO 2 2+ > Y 3+ > La 3+ series in pure acetonitrile at 15°C, whereas the stability series in pure ethyl acetate at the same temperature is as follows: UO 2 2+ > La 3+ ≈Y 3+ > Ce 3+ . Standard thermodynamic parameters of the complexation reaction (Δ c H 0 and Δ c S 0 ) have been determined and found to be affected by the metal ion nature and the binary solvent composition.

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Conductometric measurements of complexation study between 4-Isopropylcalix[4]arene and Cr3+ cation in THF–DMSO binary solvents

et al. 2015

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Complexation ability of kryptofix 22DD with lanthanum (III) cation in some binary mixed non-aqueous solvents

Cited by 4 publications

References 32 publications

Complexation Study of Kryptofix22DD with Ag+ Cation in Some Mixed Non-aqueous Binaries Solutions

Complexation Study of Kryptofix22DD with Ag+ Cation in Some Mixed Non-aqueous Binaries Solutions

Complex formation between 2,9-dihydroxy-1,10-diphenoxy-4,7-dithiadecane and La3+, UO2 2+, Ce3+, and Y3+cations in acetonitrile-ethyl acetate binary media as studied by conductometry

Conductometric measurements of complexation study between 4-Isopropylcalix[4]arene and Cr3+ cation in THF–DMSO binary solvents

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