Thermochromism in N-salicylideneanilines

DOI

N-salicylidineanilines are known to show thermochromic behaviour, which is currently postulated to arise from an intramolecular proton shift between the keto and enol form as the temperature is reduced. However, over the relevant temperature range (120-280 K), our current combined variable temperature X-ray and solid state NMR studies on N-(3-chloroaniline)-3-methoxy-salicylaldimine, 1, N-(3-chloroaniline)-4-methoxy-salicylaldimine, 2 and N-(3-chloroaniline)-5-methoxy-salicylaldimine, 3, have shown no change in the either the compound structure or atomic chemical environments respectively. In order to gain crucial insights into the thermochromic mechanism for these compounds, we aim to conduct variable temperature neutron diffraction experiments on 1, 2 and 3 to accurately determine the hydrogen positions and determine whether any such proton shift occurs.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24069214
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24069214
Provenance
Creator Dr Hazel Sparkes; Miss Helen Mason; Dr Katharina Edkins
Publisher ISIS Neutron and Muon Source
Publication Year 2012
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 Photon- and Neutron Geosciences
Temporal Coverage Begin 2009-06-12T09:13:48Z
Temporal Coverage End 2009-11-26T00:20:29Z