ISIS Neutron and Muon Source Data Journal

Understanding the spin-Peierls Transition in KTCNQ and derivatives

Abstract: Motivated by work showing that magnetic coupling between TCNQ anions in potassium TCNQ (KTCNQ) can be changed simply by changing the aromatic substituents, we seek to qunatify this behaviour. This can be achieved by different levels of fluorination on the quinodial ring and we would study the series TCNQ, TCNQF, TCNQF2 and TCNQF4, where there is an increasing number of F atoms substituted on the ring through the series itself. There has already been shown to be a shift between the muon-radical hyperfine coupling between TCNQ and TCNQF4 however more work is needed to be able to understand how this shift varies and whether we can in fact control the distrobution of spin density across the molecule. It is hoped this will then provide vital infomation as the the non-linearity of the way the transition temeprature depneds on F substitution.

Principal Investigator: Dr Adam Berlie
Experimenter: Professor Marek Szablewski
Experimenter: Dr Francis Pratt
Experimenter: Dr Stephen Cottrell

DOI: 10.5286/ISIS.E.RB1720052

ISIS Experiment Number: RB1720052

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 Adam Berlie et al; (2017): Understanding the spin-Peierls Transition in KTCNQ and derivatives, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720052

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