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Título: | The 1H NMR spectrum of pyrazole in a nematic phase |
Autor: | Provasi, P.; Jimeno, M. Luisa CSIC ORCID; Alkorta, Ibon CSIC ORCID ; Reviriego, Felipe CSIC ORCID; Elguero, José CSIC ORCID; Jokisaari, J. | Palabras clave: | Tautomerism D couplings 1H-pyrazole DFT calculations Orientational order |
Fecha de publicación: | 2016 | Editor: | John Wiley & Sons | Citación: | Magnetic Resonance in Chemistry: 637-640 (2016) | Resumen: | The experimental H nuclear magnetic resonance (NMR) spectrum of 1H-pyrazole was recorded in thermotropic nematic liquid crystal N-(p-ethoxybenzylidene)-p-butylaniline (EBBA) within the temperature range of 299–308 K. Two of three observable dipolar D-couplings appeared to be equal at each temperature because of fast prototropic tautomerism. Analysis of the Saupe orientational order parameters using fixed geometry determined by computations and experimental dipolar couplings results in a situation in which the molecular orientation relative to the magnetic field (and the liquid crystal director) can be described exceptionally by a single parameter. | Versión del editor: | http://dx.doi.org/10.1002/mrc.4422 | URI: | http://hdl.handle.net/10261/139898 | DOI: | 10.1002/mrc.4422 | Identificadores: | doi: 10.1002/mrc.4422 issn: 0749-1581 e-issn: 1097-458X |
Aparece en las colecciones: | (CENQUIOR) Artículos (IQM) Artículos |
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