A study of out-of-plane cation dynamics in a bis-thiourea pyridinium chloride inclusion compound
Physical Chemistry Chemical Physics, ISSN: 1463-9076, Vol: 13, Issue: 19, Page: 8908-8914
2011
- 9Citations
- 13Captures
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Article Description
The out-of-plane motion of the pyridinium cation in the bis-thiourea pyridinium chloride inclusion compound has been studied in a wide temperature range using H NMR, dielectric spectroscopy and quasielastic neutron scattering. The geometry of this motion is obtained from the Q-dependence of the elastic incoherent structure factor determined from the quasielastic neutron scattering measurements. We find that the pyridinium cation performs out-of-plane reorientations around the axis passing through two opposite atoms of the ring. The correlation times as a function of temperature were measured in the three known crystallographic phases, finding a good agreement between the three techniques employed. The activation energy for this motion changes from 5 ± 1 kJ mol in the low-temperature phase to 1.2 ± 0.2 kJ mol in the intermediate and high-temperature phases. © 2011 the Owner Societies.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79955535804&origin=inward; http://dx.doi.org/10.1039/c0cp02716b; http://www.ncbi.nlm.nih.gov/pubmed/21678581; https://xlink.rsc.org/?DOI=c0cp02716b; https://dx.doi.org/10.1039/c0cp02716b; https://pubs.rsc.org/en/content/articlelanding/2011/cp/c0cp02716b
Royal Society of Chemistry (RSC)
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