A switchable molecular rotator: Neutron spectroscopy study on a polymeric spin-crossover compound

J. Alberto Rodríguez-Velamazán, Miguel A. González, José A. Real, Miguel Castro, M. Carmen Muñoz, Ana B. Gaspar, Ryo Ohtani, Masaaki Ohba, Ko Yoneda, Yuh Hijikata, Nobuhiro Yanai, Motohiro Mizuno, Hideo Ando, Susumu Kitagawa

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

A quasielastic neutron scattering and solid-state 2H NMR spectroscopy study of the polymeric spin-crossover compound {Fe(pyrazine)[Pt(CN) 4]} shows that the switching of the rotation of a molecular fragment-the pyrazine ligand-occurs in association with the change of spin state. The rotation switching was examined on a wide time scale (10 -13-10 -3 s) by both techniques, which clearly demonstrated the combination between molecular rotation and spin-crossover transition under external stimuli (temperature and chemical). The pyrazine rings are seen to perform a 4-fold jump motion about the coordinating nitrogen axis in the high-spin state. In the low-spin state, however, the motion is suppressed, while when the system incorporates benzene guest molecules, the movements of the system are even more restricted.

Original languageEnglish
Pages (from-to)5083-5089
Number of pages7
JournalJournal of the American Chemical Society
Volume134
Issue number11
DOIs
Publication statusPublished - Mar 21 2012

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Pyrazines
Neutrons
Spectrum Analysis
Spectroscopy
Neutron scattering
Benzene
Nuclear magnetic resonance spectroscopy
Magnetic Resonance Spectroscopy
Nitrogen
Ligands
Association reactions
Molecules
Temperature

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Rodríguez-Velamazán, J. A., González, M. A., Real, J. A., Castro, M., Muñoz, M. C., Gaspar, A. B., ... Kitagawa, S. (2012). A switchable molecular rotator: Neutron spectroscopy study on a polymeric spin-crossover compound. Journal of the American Chemical Society, 134(11), 5083-5089. https://doi.org/10.1021/ja206228n

A switchable molecular rotator : Neutron spectroscopy study on a polymeric spin-crossover compound. / Rodríguez-Velamazán, J. Alberto; González, Miguel A.; Real, José A.; Castro, Miguel; Muñoz, M. Carmen; Gaspar, Ana B.; Ohtani, Ryo; Ohba, Masaaki; Yoneda, Ko; Hijikata, Yuh; Yanai, Nobuhiro; Mizuno, Motohiro; Ando, Hideo; Kitagawa, Susumu.

In: Journal of the American Chemical Society, Vol. 134, No. 11, 21.03.2012, p. 5083-5089.

Research output: Contribution to journalArticle

Rodríguez-Velamazán, JA, González, MA, Real, JA, Castro, M, Muñoz, MC, Gaspar, AB, Ohtani, R, Ohba, M, Yoneda, K, Hijikata, Y, Yanai, N, Mizuno, M, Ando, H & Kitagawa, S 2012, 'A switchable molecular rotator: Neutron spectroscopy study on a polymeric spin-crossover compound', Journal of the American Chemical Society, vol. 134, no. 11, pp. 5083-5089. https://doi.org/10.1021/ja206228n
Rodríguez-Velamazán JA, González MA, Real JA, Castro M, Muñoz MC, Gaspar AB et al. A switchable molecular rotator: Neutron spectroscopy study on a polymeric spin-crossover compound. Journal of the American Chemical Society. 2012 Mar 21;134(11):5083-5089. https://doi.org/10.1021/ja206228n
Rodríguez-Velamazán, J. Alberto ; González, Miguel A. ; Real, José A. ; Castro, Miguel ; Muñoz, M. Carmen ; Gaspar, Ana B. ; Ohtani, Ryo ; Ohba, Masaaki ; Yoneda, Ko ; Hijikata, Yuh ; Yanai, Nobuhiro ; Mizuno, Motohiro ; Ando, Hideo ; Kitagawa, Susumu. / A switchable molecular rotator : Neutron spectroscopy study on a polymeric spin-crossover compound. In: Journal of the American Chemical Society. 2012 ; Vol. 134, No. 11. pp. 5083-5089.
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