ISIS Neutron and Muon Source Data Journal

High-Pressure Structural Behaviour of 2,2,2-trifluoro-ethanol

Abstract: In the mono-alcohols (ROH) there is a competition between the packing requirements of the R-group and for the hydroxyl groups to be sufficiently close for hydrogen bonding to occur. The packing motifs can be chains, or catemers, if the R-group is sufficiently small. For bulkier R-groups the molecules may no longer form hydrogen bonded catemers but cyclic rings can be created. We have been studying a series of R-OH systems at pressure and we have recently found a previously unobserved structure of 2,2,2-trifluoro-ethanol (phase-II) where the R-groups are small enough to allow catemer formation. We have studied this high-pressure structure on PEARL (RB1820042) and discovered a second high-pressure structure (phase-III) at a slightly elevated pressure. We now seek time to to gain more detail of the phase-II to III transition and accurately pinpoint the onset of freezing at room temperature.

Principal Investigator: Dr David Allan
Experimenter: Dr Craig Bull
Local Contact: Dr Ivan da Silva Gonzalez
Experimenter: Dr Sarah Barnett

DOI: 10.5286/ISIS.E.RB1910318

ISIS Experiment Number: RB1910318

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Dr David Allan et al; (2019): High-Pressure Structural Behaviour of 2,2,2-trifluoro-ethanol, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910318

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