English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/2898
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 31 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título : The Zintl–Klemm Concept Applied to Cations in Oxides. II. The Structures of Silicates
Autor : Santamaría Pérez, David ; Vegas, Ángel ; Liebau, Friedrich
Palabras clave : Silicates
Zintl–Klemm concept
Cation arrays
Zintl phases
Fecha de publicación : 27-sep-2005
Editor: Springer
Citación : Struc Bond (2005) 118: 121–177
Resumen: The structures of ternary and quaternary silicates are revisited on the basis of the Zintl–Klemm concept and the Pearson's generalised octet rule. The three-dimensional skeletons formed by the Si atoms can be interpreted as if the Si atoms were behaving as Zintl polyanions, adopting the structure of either main-group elements or Zintl polyanions showing the same connectivity. The O atoms are then located close to both, the hypothetical two-electron bonds and the lone pairs, giving rise to a tetrahedral coordination. In some silicates, the Si atoms clearly show an amphoteric character so that some Si atoms act as donors (bases) adopting an octahedral coordination, whereas others behave as acceptors (acid), adopting a tetrahedral coordination. Although the octahedral coordination seems to be favoured by the application of pressure, the results reported here indicate that the coordination sphere of silicon is not a function of the assumed ionic radius of the Si4+ cations but it depends on the nature of the other cations accompanying them in the structure.
Versión del editor: http://dx.doi.org/10.1007/b137470
URI : http://hdl.handle.net/10261/2898
DOI: 10.1007/b137470
ISSN: 0081-5993
Aparece en las colecciones: (IQFR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
SAB-Silicates.pdf1,26 MBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.