Thermodynamic studies on complexation of pervanadyl ion with aminopolycarboxylates

Yamada, Shinkichi; Nagase, Junko; Funahashi, Shigenobu; Tanaka, Motoharu

doi:10.1016/0022-1902(76)80324-7

Cited by 43 publications

(24 citation statements)

References 14 publications

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“…1 The present study was performed in H 2 O + CH 3 OH medium with the aim of comparing the results with those of a previously published paper obtained at different ionic strengths. 1 The present study was performed in H 2 O + CH 3 OH medium with the aim of comparing the results with those of a previously published paper obtained at different ionic strengths.…”

Section: Introductionmentioning

confidence: 89%

“…1 On the other hand, stability constants for the formation of two species, VO 2 HL and VO 2 L -, at different ionic strengths of sodium perchlorate in the range of 0.1 < I < < 1.0 mol dm -3 was previously reported. 1 On the other hand, stability constants for the formation of two species, VO 2 HL and VO 2 L -, at different ionic strengths of sodium perchlorate in the range of 0.1 < I < < 1.0 mol dm -3 was previously reported.…”

Section: Comparison With Literature Datamentioning

confidence: 96%

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Calculation of the stability constants for the complex formation of dioxovanadium (V) with methyliminodiacetic acid in various H2O + CH3OH solutions using kamlet-abboud-taft equation

Majlesi¹,

Rezaienejad²,

Sarabi³

et al. 2013

JSCS

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The stability constants for the complex formation of VO 2 + with methyliminodiacetic acid (MIDA) were determined in this study for various volume fractions of methanol (0-45 %, v/v) at T = 298 K, I = 0.1 mol dm -3 (sodium perchlorate). Potentiometric and UV spectrophotometric methods were utilized for the collection of experimental data. Different species were investigated but the best model contained VO 2 HL and VO 2 Lfor the employed data treatment. One-, two-and three-parameter Kamlet-Abboud-Taft (KAT) equations were applied for the determination and calculation of the solvatochromic regression coefficients for the KAT models.

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Section: Introductionmentioning

confidence: 89%

Section: Comparison With Literature Datamentioning

confidence: 96%

Calculation of the stability constants for the complex formation of dioxovanadium (V) with methyliminodiacetic acid in various H2O + CH3OH solutions using kamlet-abboud-taft equation

Majlesi¹,

Rezaienejad²,

Sarabi³

et al. 2013

JSCS

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“…[HY] =CHy-[V02Y] (7) where Cvo2 and Chy are the total concentrations of V02+ and serine, respectively. Thus, the equilibrium constant for eq 3, ^ , is given by CVos j…”

Section: Resultsmentioning

confidence: 99%

“…The chemistry of vanadium(V) has been the subject of many investigations, but a few quantitative studies on the stability of the oxygenated ion (VCV) with poly(aminocarboxylate) ligands have been carried out (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic studies on complexation of dioxyvanadium(V) with serine

Gharib¹,

Zare²,

Khorami³

1993

J. Chem. Eng. Data

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The solution equilibria of the dioxyvanadium(V) complex formed by serine in acidic media (pH < 2.3) has been investigated potentiometrically and spectrophotometrically. Under these conditions the 1:1 complex has the formula VO2Y, where Y~r epresents the fully dissociated aminocarboxylate anion. The stability constant of VO2Y was determined log K\ 2 = 10.098 ± 0.146 at 25 ± 0.1 °C and 7=1 mol-dm~3 sodium perchlorate. The protonation constant of serine was also determined potentiometrically under the above conditions.

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“…To avoid isopolyvanadate formation and obtaining only the VO þ 2 ion, the solution was allowed to stand overnight before use. Under this condition, both polymerization and hydrolysis of VO þ 2 were negligible [13,14]. The concentration of VO þ 2 ion in the stock solution was checked by potentiometric titration using saturated calomel and platinum wire electrodes.…”

Section: Reagentsmentioning

confidence: 99%

Dielectric constant dependence of formation constants: complexation of dioxovanadium(V) with cysteine

Gharib

2007

Physics and Chemistry of Liquids

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The complexation of dioxovanadium(V) with L-cysteine was investigated in mixed solvent systems of methanol þ water and dioxane þ water at 25 C and 0.1 mol dm À3 ionic media, using a combination of potentiometric and spectrophotometric techniques. Sodium perchlorate solution was used to maintain the ionic strength. The compositions of the formed complexes were determined, and it was shown that dioxovanadium(V), VO þ 2 , forms two mononuclear species with the ligand. The stability constants of the complexes formed are given in the above mixed solvent media and interpreted. Linear relationships are observed when plotted log versus 1/D, where and D represent formation and dielectric constants, respectively. The results are discussed in terms of the effect on mole fraction of the solvent both for protonation and complexation of cysteine. An attempt has been made to ascertain the nature of the correction factor in determining the pH in the mixed solvent solutions and the effect of increasing organic solvent on log is also considered.

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Thermodynamic studies on complexation of pervanadyl ion with aminopolycarboxylates

Cited by 43 publications

References 14 publications

Calculation of the stability constants for the complex formation of dioxovanadium (V) with methyliminodiacetic acid in various H2O + CH3OH solutions using kamlet-abboud-taft equation

Calculation of the stability constants for the complex formation of dioxovanadium (V) with methyliminodiacetic acid in various H2O + CH3OH solutions using kamlet-abboud-taft equation

Thermodynamic studies on complexation of dioxyvanadium(V) with serine

Dielectric constant dependence of formation constants: complexation of dioxovanadium(V) with cysteine

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