ISIS Neutron and Muon Source Data Journal

Effect of pressure-transmitting medium on the phase transformation of para-aminobenzoic acid

Abstract: The pressure-transmitting medium in a high-pressure experiment is usually thought of as an inert medium that allows the sample to be compresses rather than crushed. In organic materials, the choice of medium can alter the crystal structure of the sample depending on the solubility. P-aminobenzoic acid is a well-known organic substance that is used extensively to explore polymorphism and crystallisation. In this experiment we will investigate the pressure-transmission medium and the way in which the material reacts to compression in the medium. Our Raman studies have shown that in water, ethanol and a 50% mixture of each, p-aminobenzoic acid can either undergo a phase transition to a new high-pressure phase or remain in the known form. We will follow these experimental observations with diffraction measurements so that structural information can be elucidated.

Principal Investigator: Dr Iain Oswald
Experimenter: Dr Aurora Cruz-Cabeza
Local Contact: Dr Craig Bull
Experimenter: Dr Martin Ward
Experimenter: Mr Lloyd Farquhar

DOI: 10.5286/ISIS.E.RB1810710

ISIS Experiment Number: RB1810710

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 Iain Oswald et al; (2018): Effect of pressure-transmitting medium on the phase transformation of para-aminobenzoic acid, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810710

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