On the crystal structures of some nickel hexacyanoferrates  II,III

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! Rietveld crystal structure ferrocyanide ferricyanide
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 http://hdl.handle.net/123456789/1087
Aparece en las colecciones:	Doctorado

Ficheros en este ítem:

Fichero	Descripción	Tamaño	Formato
2004PDHexaNi 1.pdf		17.87 kB	Adobe PDF	Visualizar/Abrir

El Instituto Politécnico Nacional