A mass spectrometric study of solvated clusters of ions and ion pairs generated from lithium halide solutions in polar solvents

Acetonitrile compared to methanol

T. Megyes, T. Radnái, Akihiro Wakisaka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Mass spectrometric study on cluster structure of solutions of lithium halides (LiX = LiBr and LiI) in acetonitrile is reported. Solvated ions Li+(CH3CN)n, X-(CH3CN)n, and salt clusters Li+(LiX)m(CH3CN)n and X-(LiX)m(CH3CN)n, were observed in the spectra. The mechanism of cluster formation is discussed in terms of a competition between solvation interactions and electrostatic interactions. This helps to explain the differences between clustering in methanol and acetonitrile, since the latter one has much larger dipole moment than the former one. Therefore appearance of solvated clusters, including the solvated salt clusters, is more favourable in methanol solutions' spectra.

Original languageEnglish
Pages (from-to)319-329
Number of pages11
JournalJournal of Molecular Liquids
Volume103-104
Issue numberSPEC.
DOIs
Publication statusPublished - Mar 2003

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Acetonitrile
Lithium
acetonitrile
halides
Methanol
methyl alcohol
Salts
lithium
Ions
Solvation
Dipole moment
Coulomb interactions
ions
salts
solvation
dipole moments
interactions
electrostatics

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

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title = "A mass spectrometric study of solvated clusters of ions and ion pairs generated from lithium halide solutions in polar solvents: Acetonitrile compared to methanol",
abstract = "Mass spectrometric study on cluster structure of solutions of lithium halides (LiX = LiBr and LiI) in acetonitrile is reported. Solvated ions Li+(CH3CN)n, X-(CH3CN)n, and salt clusters Li+(LiX)m(CH3CN)n and X-(LiX)m(CH3CN)n, were observed in the spectra. The mechanism of cluster formation is discussed in terms of a competition between solvation interactions and electrostatic interactions. This helps to explain the differences between clustering in methanol and acetonitrile, since the latter one has much larger dipole moment than the former one. Therefore appearance of solvated clusters, including the solvated salt clusters, is more favourable in methanol solutions' spectra.",
author = "T. Megyes and T. Radn{\'a}i and Akihiro Wakisaka",
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T1 - A mass spectrometric study of solvated clusters of ions and ion pairs generated from lithium halide solutions in polar solvents

T2 - Acetonitrile compared to methanol

AU - Megyes, T.

AU - Radnái, T.

AU - Wakisaka, Akihiro

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AB - Mass spectrometric study on cluster structure of solutions of lithium halides (LiX = LiBr and LiI) in acetonitrile is reported. Solvated ions Li+(CH3CN)n, X-(CH3CN)n, and salt clusters Li+(LiX)m(CH3CN)n and X-(LiX)m(CH3CN)n, were observed in the spectra. The mechanism of cluster formation is discussed in terms of a competition between solvation interactions and electrostatic interactions. This helps to explain the differences between clustering in methanol and acetonitrile, since the latter one has much larger dipole moment than the former one. Therefore appearance of solvated clusters, including the solvated salt clusters, is more favourable in methanol solutions' spectra.

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