Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/11533
Título : On the crystal structures of some nickel hexacyanoferrates II,III
Palabras clave : nickel hexacyanoferrates ~II,III!
crystal structure
Fecha de publicación : 16-ene-2013
Editorial : International Centre for Diffraction
Descripción : The crystal structures of some nickel hexacyanoferrates ~II, III!, including mixed compositions containing Na1, K1 and Cs1, were resolved and refined from XRD powder patterns. Data from infrared, Mo¨ssbauer and adsorption techniques provided complementary structural information. The crystal structures of Ni3@Fe(CN)6#2 16H2O and NiCs2@Fe(CN)6# were refined in space group Fm3m. NiNa2@Fe(CN)6# 2H2O and NiK2@Fe(CN)6# 2H2O were found to be orthorhombic ~space group Pmn21). This structure (Pmn21) results from a distortion around the alkali ion, which appears as a monohydrated interstitial species. On ionic exchange in an aqueous solution containing Cs1, the orthorhombic distortion disappears and the cubic cell is obtained. Cs1 is a large cation and space is not available for interstitial water molecules. This orthorhombic model is also supported by the Mo¨ssbauer spectra of the ferrous analogs, FeK2@Fe(CN)6# xH2O and Fe@Pt(CN)6#. © 2004 International Centre for Diffraction Data. @DOI: 10.1154/1.1757448#
URI : http://www.repositoriodigital.ipn.mx/handle/123456789/11533
Otros identificadores : Powder Diffraction 19 (3), September 2004
Aparece en las colecciones: Doctorado

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