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http://repositoriodigital.ipn.mx/handle/123456789/11342| Título : | Crystal structure of orthorhombic ferrous nitroprusside: Fe Fe CN 5NO .2H2O |
| Palabras clave : | ferrous nitroprusside X-ray pentacyanonitrosylferrate Mössbauer spectroscopy diffraction Rietveld refinement crystal structure |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | Powder Diffraction |
| Descripción : | Ferrous nitroprusside can be obtained in three structural modifications: two different unstable phases, monoclinic trihydrate and cubic pentahydrate, and the stable one, an orthorhombic dihydrate. This contribution reports the crystal structure of the last one. Cell parameters are: a =13.9734 s2d, b=7.4274 s1d, and c=10.4697 s1d Å; with four formula units per cell sZ=4d. The crystal structure was refined from the corresponding XRD powder pattern using the Rietveld method. Final agreement factors of the refinement process were Rwp=8.46, Rp=6.54, and S=1.38. The crystal structure is formed by a tridimensional assembling of the fFesCNd5NOg molecular block through iron atoms bounded at the N end of the CN ligands. The NO group remains unlinked at its O atom. The octahedral coordination of the assembling metal is completed with a coordinated water molecule which stabilizes a second water through a strong hydrogen bond interaction. The tridimensional structure appears as piled up rippled sheets leading to a system of interconnected small cavities which increase their available volume on the material dehydration. This complex loses its crystal water below 100 °C and then remains stable up to above 160 °C when the decomposition process begins with the loss of the NO ligand. © 2005 International Centre for Diffraction Data. fDOI: 10.1154/1.1872874g |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11342 |
| Otros identificadores : | Powder Diffraction 20 ~1!, March 2005 http://hdl.handle.net/123456789/926 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 2005NPFePD 1.pdf | 17.41 kB | Adobe PDF | Visualizar/Abrir |
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