Understanding the spin-Peierls Transition in KTCNQ and derivatives

DOI

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.

Identifier
DOI https://doi.org/10.5286/ISIS.E.97184223
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/97184223
Provenance
Creator Dr Marek Szablewski; Dr Francis Pratt; Dr Adam Berlie; Dr Stephen Cottrell
Publisher ISIS Neutron and Muon Source
Publication Year 2021
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Chemistry; Natural Sciences; Physics
Temporal Coverage Begin 2018-07-02T08:00:00Z
Temporal Coverage End 2018-07-05T08:23:24Z