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Título: | A switchable molecular rotator: Neutron spectroscopy study on a polymeric spin-crossover compound |
Autor: | Rodríguez-Velamazán, J. A. CSIC ORCID; González, Miguel A.; Castro, Miguel CSIC ORCID | Fecha de publicación: | 2012 | Editor: | American Chemical Society | Citación: | Journal of the American Chemical Society 134(11): 5083-5089 (2012) | Resumen: | 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. © 2012 American Chemical Society. | URI: | http://hdl.handle.net/10261/52307 | DOI: | 10.1021/ja206228n | Identificadores: | doi: 10.1021/ja206228n issn: 0002-7863 e-issn: 1520-5126 |
Aparece en las colecciones: | (ICMA) Artículos |
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