Zur Stabilisierung von Suboxidphasen durch Carbidionen: Die Kristallstruktur von Sr21Si2O5C6

Autor:	Ute Rößler, Brigitte Eisenmann, Markus Knoth
Rok vydání:	2005
Předmět:	Suboxide Chemistry Corundum Crystal structure engineering.material Ion Carbide Inorganic Chemistry Metal Crystallography Octahedron Zintl phase visual_art engineering visual_art.visual_art_medium
Zdroj:	Zeitschrift für anorganische und allgemeine Chemie. 631:1237-1240
ISSN:	1521-3749 0044-2313
DOI:	10.1002/zaac.200500023
Popis:	On the Stabilization of Suboxide Phases by Carbide Ions: The Crystal Structure of Sr21Si2O5C6 Metallic brass-coloured crystals of Sr21Si2O5C6were isolated from samples starting from the educts Sr : SiO : C = 21 : 2 : 6 heated under argon atmosphere in corundum crucibles up to 1150 K. The air-sensitive compound crystallizes in the cubic system, space group = 1914,56(19) pm, Z = 8. In the crystal structure the Si, O and C atoms are coordinated only by Sr atoms forming distorted icosahedra around Si and distorted octahedra around O and C. The compound can be classified as an electron precise Zintl phase according to (Sr2+)21(Si4−)2(O2−)5(C4−)6.
Databáze:	OpenAIRE
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