Preferential solvation of Ag+ ions in acrylonitrile/water mixtures studied by FT-Raman spectroscopy

Solutions of LiClO(4) in solvent mixtures consisting of dimethylsulfoxide (DMSO) and water, or DMSO and gamma-butyrolactone, were studied by (7)Li NMR spectroscopy (for complexation by cryptands in gamma-butyrolactone as a solvent, see: E. Pasgreta, R. Puchta, M. Galle, N. J. R. van Eikema Hommes, A. Zahl, R. van Eldik, J. Incl. Phen., 2007, 58, 81-88). Chemical shifts indicate that the Li(+) ion is coordinated by four DMSO molecules. In the binary solvent mixture of water and DMSO, no selective solvation is detected, thus indicating that on increasing the water content of the solvent mixture, DMSO is gradually displaced by water in the coordination sphere of Li(+). The ligand-exchange mechanism of Li(+) ions solvated by DMSO and water/DMSO mixtures was studied using DFT calculations. Ligand exchange on [Li(DMSO)(4)](+) was found to follow a limiting associative (A) mechanism. The displacement of coordinated H(2)O by DMSO in [Li(H(2)O)(4)](+) follows an associative interchange mechanism. The suggested mechanisms are discussed in reference to available experimental and theoretical data.

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Ligand‐Exchange Processes on Solvated Lithium Cations: DMSO and Water/DMSO Mixtures

Pasgreta

Puchta

Galle

et al. 2007

ChemPhysChem

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Association and Solvation of Silver Nitrate and Perchlorate in Aqueous Ethanol

et al. 2016

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Clusters of acrylonitrile in methanol/ethanol: A structure–spectra correlation by quantum chemical and polarized Raman study

2011

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Preferential solvation of Ag+ ions in acrylonitrile/water mixtures studied by FT-Raman spectroscopy

Cited by 6 publications

References 20 publications

Ligand‐Exchange Processes on Solvated Lithium Cations: DMSO and Water/DMSO Mixtures

Ligand‐Exchange Processes on Solvated Lithium Cations: DMSO and Water/DMSO Mixtures

Association and Solvation of Silver Nitrate and Perchlorate in Aqueous Ethanol

Clusters of acrylonitrile in methanol/ethanol: A structure–spectra correlation by quantum chemical and polarized Raman study

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