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Título : | Heat-induced charge transfer in cobalt iron cyanide |
Palabras clave : | A. Inorganic compounds D. Crystal structure C. Infrared spectroscopy C. Mo¨ ssbauer spectroscopy C. X-ray diffraction |
Fecha de publicación : | 16-ene-2013 |
Editorial : | ScienceDirect |
Descripción : | The heating of Co(2+) ferricyanide above 80 1C induces an inner charge transfer from Co(2+) towards Fe(III) to form the mixed valence system Co(2+)Co(III) ferri- ferro-cyanide. This charge transfer takes place preserving the material framework and forming a solid solution of the initial and final species. The cell edge of the cubic cell (Fm-3m) of this solid solution follows a regular variation with the material composition. This mixed valence system was characterized using X-ray diffraction, infrared, thermo-gravimetric, Mo¨ ssbauer and magnetic measurements. Its formation is easily detected by the appearance of an intermediate n(CN) absorption band in the infrared spectra at around 2120 cm 1, 40cm 1 below and above the observed frequency for this vibration in Co(2+) ferri- and ferro-cyanide, respectively. r 2006 Elsevier Ltd. All rights reserved. |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11236 |
Otros identificadores : | Journal of Physics and Chemistry of Solids 67 (2006) 2289–2299 http://hdl.handle.net/123456789/748 |
Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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2006MVSHeating 2.pdf | 77.79 kB | Adobe PDF | Visualizar/Abrir |
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