Alkylpyridinium Tetrahalidometallate Ionic Liquids and Ionic Liquid Crystals: Insights into the Origin of Their Phase Behavior
- Six N-alkylpyridinium salts [CnPy](2)[MCl4] (n = 4 or 12 and M = Co, Cu, Zn) were synthesized, and their structure and thermal properties were studied. The [C4Py](2)[MCl4] compounds are monoclinic and crystallize in the space group P2(1)/n. The crystals of the longer chain analogues [C12Py](2)[MCl4] are triclinic and crystallize in the space group P (1) over bar. Above the melting temperature, all compounds are ionic liquids (ILs). The derivatives with the longer C12 chain exhibit liquid crystallinity and the shorter chain compounds only show a melting transition. Consistent with single-crystal analysis, electron paramagnetic resonance spectroscopy suggests that the [CuCl4](2-) ions in the Cu-based ILs have a distorted tetrahedral geometry.
| Author details: | Ahed AbouserieORCiDGND, Kerstin ZehbeORCiD, Philipp Metzner, Alexandra Kelling, Christina GünterGND, Uwe SchildeORCiDGND, Peter StrauchGND, Thomas Körzdörfer, Andreas TaubertORCiDGND |
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| DOI: | https://doi.org/10.1002/ejic.201700826 |
| ISSN: | 1434-1948 |
| ISSN: | 1099-0682 |
| Title of parent work (English): | European journal of inorganic chemistry : a journal of ChemPubSoc Europe |
| Publisher: | Wiley-VCH |
| Place of publishing: | Weinheim |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2017 |
| Publication year: | 2017 |
| Release date: | 2020/04/20 |
| Tag: | Alkylpyridinium salts; Ionic liquids; Phase transitions; Structure elucidation |
| Number of pages: | 10 |
| First page: | 5640 |
| Last Page: | 5649 |
| Funding institution: | Deutsche Forschungsgemeinschaft (DFG) SPP1708 Grant [TA571/13-1]; University of Potsdam |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften | |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |
