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The structure of two manganese hexacyanometallates(II): Mn2[Fe(CN)6].8H2O and Mn2[Os(CN)6].8H2O

Published online by Cambridge University Press:  05 March 2012

A. Gómez ,
V. H. Lara ,
P. Bosch  and
E. Reguera
A. Gómez
Affiliation:
Institute of Materials and Reagents, University of Havana, San Lazaro and L, 10400 Havana, Cuba
V. H. Lara
Affiliation:
Universidad Autonoma Metropolitana, Unidad Iztapalapa, México D.F., México
P. Bosch
Affiliation:
Universidad Autonoma Metropolitana, Unidad Iztapalapa, México D.F., México
E. Reguera*
Affiliation:
Institute of Materials and Reagents, University of Havana, San Lazaro and L, 10400 Havana, Cuba
*
a)Author to whom correspondence should be addressed; electronic mail: [email protected]
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Abstract

The crystal structures of two manganese hexacyanometallates(II), Mn2[Fe(CN)6].8H2O and Mn2[Os(CN)6].8H2O, were refined from X-ray powder diffraction data using the Rietveld method, with the reported structure for Mn2[Ru(CN)6].8H2O used as a structural model. These compounds are isomorphous and crystallize in the monoclinic space group P21/n. Their crystallization water is not firmly bound and can be removed without disrupting the M–C≡N–Mn network. In the dehydrated complexes, the outer cation (Mn) remains linked to only three N atoms from CN ligands while the inner cation (Fe,Os) preserves its coordination sphere. The IR, Raman, and Mössbauer spectra for the hydrated and anhydrous forms are explained based on the refined structures.

Keywords

ferrocyanideosmocyanideX-ray diffractionRietveld methodMössbauerinfraredRaman
Type
New Diffraction Data
Information
Powder Diffraction , Volume 17 , Issue 2 , June 2002 , pp. 144 - 148
Copyright
Copyright © Cambridge University Press 2005

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