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The Crystal Structure of Ba2Cu2AlF11: a New Structure Type in Copper Fluoride Crystal Chemistry

✍ Scribed by Nathalie Dupont; Ariel de Kozak; Patrick Gredin; Maurice Samouël

Publisher
John Wiley and Sons
Year
1998
Tongue
German
Weight
107 KB
Volume
624
Category
Article
ISSN
0372-7874

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✦ Synopsis

Ba 2 Cu 2 AlF 11 is trigonal: a = 7.301(1) A Ê , c = 14.145(2) A Ê , c = 120°, Z = 3. The crystal structure was solved in the space group P3 2 (n°145), from X-ray single crystal data using 2675 unique reflections (2476 with F/r(F) > 4). It consists in a complex tridimensional arrangement of copperfluorine and aluminium-fluorine octahedra, with an original kind of linkage which involves simultaneously edges and vertices.

Keywords

: Barium Copper Aluminium Fluoride; Ba 2 Cu 2 AlF 11 ; crystal structure Die Kristallstruktur von Ba 2 Cu 2 AlF 11 : ein neuer Strukturtyp in der Kristallchemie der Kupferfluoride Inhaltsu È bersicht. Ba 2 Cu 2 AlF 11 kristallisiert trigonal mit den Gitterkonstanten: a = 7,301(1) A Ê , c = 14,145(2) A Ê , c = 120°, Z = 3. Die Kristallstruktur wurde an einem Einkristall in der Raumgruppe P3 2 (Nr. 145), mit 2675 unabha È ngigen Reflexen (2476 mit F > 4r(F)) gelo È st. Sie bildet eine komplexe, dreidimensionale Anordnung von Kupfer-und Aluminiumfluorid-Oktaedern, die in einer bisher unbekannten Weise u È ber Ecken und Kanten miteinander verknu È pft sind.

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