Stability constants and thermodynamic behaviour of the complex formation of two crown ethers with zinc (II) and copper (II) ions in water + acetonitrile mixed solvent: a conductivity measurement study

Hossain, Md. Alamgir; Hossen, Md. Delwar; Mahbub, Shamim; Hoque, Md. Anamul; Islam, Dipa; Kumar, Dileep; Khan, Javed Masood; Irfan, Mohammad; Ahmed, Mohammad Z.

doi:10.1080/00319104.2021.1972105

Cited by 3 publications

(2 citation statements)

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“…This large mole ratios may be avoided by using the conductimetric method described in this article to determine the stability constants of dye inclusion complexes. Commonly, the conductimetric approach is used to determine the stability constants of ion-macrocycle complexes, including the binding of metal cations by crown ethers [29,30] and cryptands [31], and the binding of anionic surfactants [32][33][34][35][36] and small anions by cyclodextrins [37]. This work used the conductimetric technique to investigate the binding of methyl orange anion by α-CD in aqueous solutions at various temperatures and to report the thermodynamic parameters of the inclusion processes.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of methyl orange anion association with α-cyclodextrin using a conductometric approach

Khouri

Altwaiq

2023

J Incl Phenom Macrocycl Chem

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The electrical conductivities of aqueous solutions of the azo dye methyl orange (sodium salt) were measured at 25.0 °C in the concentration range between 2.103 × 10 -4 and 9.255 × 10 -4 mol L -1 . Molar conductivity values t the Debye-Hückel-Wager equation for a symmetric electrolyte. The value of the molar conductivity of the sodium salt of methyl orange at in nite dilution is 77.93 ± 0.38 S cm 2 mol -1 . For the anions of methyl orange, the ionic conductivity at in nite dilution was calculated to be 27.82 S cm 2 mol -1 . Using the same methodology, a thermodynamic analysis of the association between methyl orange anion and α-cyclodextrin was conducted at 20.0, 25.0, 32.0, and 40.0 °C. The measured molar conductivities decreased as the mole ratio of α-cyclodextrin to methyl orange went below 3. The conductivity measurements were analysed using a model using 1:1 stoichiometry at the four different temperatures. The values of AH o and AS o are determined, as well as a discussion of their relevance.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of methyl orange anion association with α-cyclodextrin using a conductometric approach

Khouri

Altwaiq

2023

J Incl Phenom Macrocycl Chem

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Methyl Orange Anion Association with α-Cyclodextrin Using a Conductometric Approach

Khouri

Altwaiq

2022

Preprint

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The electrical conductivities of aqueous solutions of the azo dye methyl orange (sodium salt) were measured at 25.0 °C in the concentration range between 2.103 × 10-4 and 9.255 × 10-4 mol L-1. Molar conductivity values fit the Debye-Hückel-Wager equation for a symmetric electrolyte. The value of the molar conductivity of the sodium salt of methyl orange at infinite dilution is 77.93 ± 0.38 S cm2 mol-1. For the anions of methyl orange, the ionic conductivity at infinite dilution was calculated to be 27.82 S cm2 mol-1. Using the same methodology, a thermodynamic analysis of the association between methyl orange anion and α-cyclodextrin was conducted at 20.0, 25.0, 32.0, and 40.0 °C. The measured molar conductivities decreased as the mole ratio of α-cyclodextrin to methyl orange went below 3. The conductivity measurements were analysed using a model using 1:1 stoichiometry at the four different temperatures. The values of AHo and ASo are determined, as well as a discussion of their relevance.

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Supramolecular channels via crown ether functionalized polyaniline for proton-self-doped cathode in aqueous zinc-ion battery

Jiang,

Hu,

Zhang

et al. 2024

Journal of Colloid and Interface Science

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Stability constants and thermodynamic behaviour of the complex formation of two crown ethers with zinc (II) and copper (II) ions in water + acetonitrile mixed solvent: a conductivity measurement study

Cited by 3 publications

References 61 publications

Thermodynamic analysis of methyl orange anion association with α-cyclodextrin using a conductometric approach

Thermodynamic analysis of methyl orange anion association with α-cyclodextrin using a conductometric approach

Thermodynamic Analysis of Methyl Orange Anion Association with α-Cyclodextrin Using a Conductometric Approach

Supramolecular channels via crown ether functionalized polyaniline for proton-self-doped cathode in aqueous zinc-ion battery

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