ISIS Neutron and Muon Source Data Journal

Unexpected Dynamics of the Imidazolium Cation in the Crystals of a New Magnetic Ionic Liquid

Abstract: The MIL DimimFeCl4 displays 3D antiferromagnetic ordering below 5.6K. The crystal structure at 10 K, solved by synchrotron XRPD, NPD and DFT calculations shows that it crystallizes in the space group P21. More recently diffraction experiments have shown an unexpected s-s transition from the low temperature phase, after heating from 2K and keeping it for several minutes between 180 and 220K. This new solid phase crystallizes in a similar structure with space group P21/c. Moreover, cooling the sample to 2K again gives a new magnetic structure with better defined long range magnetic ordering. The dynamics of larger imidazolium cations in non-magnetic RTIL¿s have been probed using quasi-elastic scattering. Results indicate a rich dynamical landscape in the ps-ns timescale, CH3 rotations, relaxations in the glassy state,... We expect similar motions in our shorter imidazolium system

Principal Investigator: Dr Imanol de Pedro
Experimenter: Dr Diego Alba Venero
Experimenter: Dr Jesus rodriguez
Experimenter: Dr Victoria Garcia Sakai
Experimenter: Dr Manuel de Pedro
Experimenter: Mr Abel Garcia Saiz

DOI: 10.5286/ISIS.E.RB1510173

ISIS Experiment Number: RB1510173

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Imanol de Pedro et al; (2015): Unexpected Dynamics of the Imidazolium Cation in the Crystals of a New Magnetic Ionic Liquid, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510173

Data is released under the CC-BY-4.0 license.