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Metal Containing Ionic Liquids

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (15 December 2011) | Viewed by 16478

Special Issue Editors

Institute of Chemistry, University of Potsdam, Building 25, Rm. B.0.17-17, Karl-Liebknecht-Str. 24-25, D-14476 Golm, Germany
Interests: inorganic materials synthesis in ionic liquids; functional ionic liquids-hybrid materials; ionogels; biomimetic materials; hybrid materials; calcium phosphate; silica; water treatment; energy materials
Special Issues, Collections and Topics in MDPI journals
Institute of Chemistry, University of Potsdam, Building 26, Rm. 2.62, Karl-Liebknecht-Str. 24-25, D-14476 Golm, Germany

Special Issue Information

Dear Colleagues,

Ionic liquids (ILs) have in the last ten to 15 years attracted an ever growing interest and the number of articles on the subject now easily exceeds 10'000 publications. Many topics such as organic synthesis, catalysis, separation, electrochemistry, and ionic liquid crystals (ILCs) are now well established. Metal containing ILs (M-ILs), in contrast, have so far largely been overlooked and there are only relatively few articles on the synthesis, structure, properties, and applications of metal-containing ILs and ILCs. Recently however, research on the subject has gained some momentum because it has been realized that M-ILs are attractive for a number of applications including catalysis, optical devices, electrochemical and sensing problems, and magnetic components. The current special issue will highlight some of the most recent research on the synthesis, structure, and properties of M-ILs and provide a an overview of the state of the art of M-IL research, development, and application.

Prof. Dr. Andreas Taubert
Prof. Dr. Peter Strauch
Guest Editors

Keywords

  • ionic liquids
  • ionic liquid crystals
  • metals
  • catalysis
  • optics
  • sensing
  • magnetism
  • ion transport
  • electrochemistry
  • synthesis
  • structure
  • properties
  • applications

Published Papers (2 papers)

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Research

238 KiB  
Article
Tetrachloridocuprates(II)—Synthesis and Electron Paramagnetic Resonance (EPR) Spectroscopy
by Alette Winter, André Zabel and Peter Strauch
Int. J. Mol. Sci. 2012, 13(2), 1612-1619; https://doi.org/10.3390/ijms13021612 - 02 Feb 2012
Cited by 18 | Viewed by 7586
Abstract
Ionic liquids (ILs) on the basis of metal containing anions and/or cations are of interest for a variety of technical applications e.g., synthesis of particles, magnetic or thermochromic materials. We present the synthesis and the results of electron paramagnetic resonance (EPR) spectroscopic analyses [...] Read more.
Ionic liquids (ILs) on the basis of metal containing anions and/or cations are of interest for a variety of technical applications e.g., synthesis of particles, magnetic or thermochromic materials. We present the synthesis and the results of electron paramagnetic resonance (EPR) spectroscopic analyses of a series of some new potential ionic liquids based on tetrachloridocuprates(II), [CuCl4]2−, with different sterically demanding cations: hexadecyltrimethylammonium 1, tetradecyltrimethylammonium 2, tetrabutylammonium 3 and benzyltriethylammonium 4. The cations in the new compounds were used to achieve a reasonable separation of the paramagnetic Cu(II) ions for EPR spectroscopy. The EPR hyperfine structure was not resolved. This is due to the exchange broadening, resulting from still incomplete separation of the paramagnetic Cu(II) centers. Nevertheless, the principal values of the electron Zeemann tensor (g and g) of the complexes could be determined. Even though the solid substances show slightly different colors, the UV/Vis spectra are nearly identical, indicating structural changes of the tetrachloridocuprate moieties between solid state and solution. The complexes have a promising potential e.g., as high temperature ionic liquids, as precursors for the formation of copper chloride particles or as catalytic paramagnetic ionic liquids. Full article
(This article belongs to the Special Issue Metal Containing Ionic Liquids)
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395 KiB  
Article
Mössbauer Spectroscopy and X-ray Diffraction Study of 57Fe-Labeled Tetrachloroferrate(III)-Based Magnetic Ionic Liquids
by Rolfe H. Herber, Israel Nowik, Mirco E. Kostner, Volker Kahlenberg, Christoph Kreutz, Gerhard Laus and Herwig Schottenberger
Int. J. Mol. Sci. 2011, 12(10), 6397-6406; https://doi.org/10.3390/ijms12106397 - 26 Sep 2011
Cited by 17 | Viewed by 8029
Abstract
Four 57Fe-labeled tetrachloroferrates(III) of organic cations (1-butyl-3-methyl-imidazolium, 1-allyl-3-methylimidazolium, 1-methyl-1-propylpyrrolidinium, tetraphenyl­phosphonium) were examined by temperature-dependent Mössbauer spectroscopy. The hyperfine and dynamic parameters of the iron(III) site were determined. Single crystal X-ray diffraction data of [Ph4P][FeCl4] were collected at four [...] Read more.
Four 57Fe-labeled tetrachloroferrates(III) of organic cations (1-butyl-3-methyl-imidazolium, 1-allyl-3-methylimidazolium, 1-methyl-1-propylpyrrolidinium, tetraphenyl­phosphonium) were examined by temperature-dependent Mössbauer spectroscopy. The hyperfine and dynamic parameters of the iron(III) site were determined. Single crystal X-ray diffraction data of [Ph4P][FeCl4] were collected at four temperatures (295, 223, 173, and 123 K), and the dynamics of the iron atom inferred from the Mössbauer data and the single crystal Ui,j parameters have been compared. Full article
(This article belongs to the Special Issue Metal Containing Ionic Liquids)
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