Structural characterization of the order-disorder transition in a novel quinuclidine-based halometallate compound: (quinuclidine)[FeCl4]
Quinuclidine-based halometallate compounds display very interesting dynamic phenomena as a consequence of the high mobility of the quinuclidine-based countercations. In this proposal we pretend to deep study the crystal structure of(quinuclidine)[FeCl4] compound. This compound presents a structural order-disorder transition which is related with an electric phase transition, similar to those previously observed in divalent- and monovalent cation-containing compounds. In order to survey the crystal structure as function of the temperature, we ask for the Laue diffractometer CYCLOPS. Based on the CYCLOPS results, accurate structural models at selected temperatures will be determine using the monochromatic D19 or D9 single crystal neutron diffractometers. Our main objective is determine the influence of H-bonds, which should be the final responsible of the blocking of the quinuclidine counterions in the low temperature phase.
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GONZALEZ IZQUIERDO Palmerina; BEOBIDE Garikoitz; Caņadillas-Delgado, L.; DE PEDRO DEL VALLE Manuel; FABELO ROSA Oscar Ramon and FERNANDEZ DIAZ Maria Teresa. (2020). Structural characterization of the order-disorder transition in a novel quinuclidine-based halometallate compound: (quinuclidine)[FeCl4]. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-12-347
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