Direct observation of Mg2+ complexes in ionic liquid solutions by 31Mg β-NMR spectroscopy

Daniel Szunyogh; Ryan M. L. McFadden; Victoria L. Karner; Aris Chatzichristos; Thomas Day Goodacre; Martin H. Dehn; Lia Formenti; Derek Fujimoto; Alexander Gottberg; Evan Kallenberg; Ildikó Kálomista; Robert F. Kiefl; Flemming H. Larsen; Jens Lassen; C. D. Philip Levy; Ruohong Li; W. Andrew MacFarlane; Iain McKenzie; Gerald D. Morris; Stavroula Pallada; Matthew R. Pearson; Stephan P. A. Sauer; Paul Schaffer; Peter W. Thulstrup; Lars Hemmingsen; Monika Stachura

doi:10.1039/C8DT02350F

Direct observation of Mg²⁺ complexes in ionic liquid solutions by ³¹Mg β-NMR spectroscopy†

Daniel Szunyogh,

‡^a Ryan M. L. McFadden,

‡^bc Victoria L. Karner,‡^bc Aris Chatzichristos,^cd Thomas Day Goodacre,^e Martin H. Dehn,^cd Lia Formenti,^f Derek Fujimoto,

^cd Alexander Gottberg,^e Evan Kallenberg,^d Ildikó Kálomista,

^a Robert F. Kiefl,^cd Flemming H. Larsen,

^g Jens Lassen,

^e C. D. Philip Levy,^e Ruohong Li,^e W. Andrew MacFarlane,^bc Iain McKenzie,

^hi Gerald D. Morris,^h Stavroula Pallada,^a Matthew R. Pearson,^h Stephan P. A. Sauer,

^a Paul Schaffer,^j Peter W. Thulstrup,

^a Lars Hemmingsen*^a and Monika Stachura

*^j

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark
E-mail: lhe@chem.ku.dk

^b Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, Canada

^c Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, Canada

^d Department of Physics and Astronomy, The University of British Columbia, 6224 Agricultural Road, Vancouver, Canada

^e Accelerator Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, Canada

^f Department of Physics, University of Guelph, 50 Stone Road E., Guelph, Canada

^g Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark

^h Physical Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, Canada

ⁱ Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, Canada

^j Life Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, Canada
E-mail: mstachura@triumf.ca

Abstract

NMR spectra of Mg²⁺ ions in ionic liquids were recorded using a highly sensitive variant of NMR spectroscopy known as β-NMR. The β-NMR spectra of MgCl₂ in EMIM-Ac and EMIM-DCA compare favourably with conventional NMR, and exhibit linewidths of ∼3 ppm, allowing for discrimination of species with oxygen and nitrogen coordination.

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Direct observation of Mg²⁺ complexes in ionic liquid solutions by ³¹Mg β-NMR spectroscopy†

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Direct observation of Mg²⁺ complexes in ionic liquid solutions by ³¹Mg β-NMR spectroscopy

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