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Crystal structure of cyanometallates Me3[Co(CN)6]2 and KMe[Fe(CN)6] with Me=Mn2+, Ni2+, Cu2+

Published online by Cambridge University Press:  10 January 2013

Grzegorz Małecki  and
Alicja Ratuszna
Grzegorz Małecki
Affiliation:
Institute of Chemistry, University of Silesia, 40-006 Katowice, 9th Szkolna Str., Poland
Alicja Ratuszna*
Affiliation:
Institute of Physics, University of Silesia, 40-007 Katowice, 4th Uniwersytecka Str., Poland
*
a)Author to whom all correspondence should be addressed.
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Abstract

The crystal structure of four cyanometallates has been determined from X-ray powder diffraction data using the Rietveld method. The variously hydrated compounds Cu3[Co(CN)6]2, Mn3[Co(CN)6]2 and KNi[Fe(CN)6] crystallize at cubic symmetry (Fm3m) with lattice parameters 10.032(2), 10.413(3) and 10.234(5) Å, respectively. The crystal of KMn[Fe(CN)6]·2H2O shows a monoclinic structure (P21/c) with the lattice parameters a=10.108(2) Å, b=10.104(3) Å, c=10.114(3) Å, β=92°, 93°. The starting model was based on an isomorphic Mn3[Co(CN)6]2 single crystal structure, where Co and Mn ions are octahedrally coordinated by C and N atoms, respectively, forming three-dimensional bimetallic networks with the C≡N groups as bridging ligands.

Keywords

ferro- and cobaltocyanidesX-ray powder diffractionRietveld refinement
Type
Research Article
Information
Powder Diffraction , Volume 14 , Issue 1 , March 1999 , pp. 25 - 30
Copyright
Copyright © Cambridge University Press 1999

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