ISSN:
0044-2313
Keywords:
Quaternary fluorides
;
preparation
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
New Investigations on Quaternary FluoridesFor the first time the quaternary fluorides M12MIILnF7 (M1 = Na, Ag; MII = Ca, Cd; Ln = Er—Lu) had been prepared and examined with with X-ray diffraction. All these compounds crystallize in a cubic face-centered lattice. Colourless single crystals of Na2CdYbF7 were obtained and the structure was determined. Na2CdYbF7 crystallizes in the space group Fm3M-O5h, No. 225. The single-crystal diffraction data refer to a Defect-Fluorite-Structure. The R-value for 332 observed (29 independend) reflections is 2.2%.
Notes:
Erstmals wurden die quarternären Fluoride M12M11LnF7 (M1 = Na, Ag; M11 = Ca, Cd; Ln = Er—Lu) dargestellt und röntgenographisch untersucht. Alle Verbindungen kristallisieren kubisch flächenzentriert. An farblosen Einkristallen von Na2CdYbF7 wurde eine Strukturbestimmung durchgeführt. Na2CdYbF7 kristallisiert in der Raumgruppe Fm3m-O5h, Nr. 225. Die Meßwerte verweisen auf eine Defekt-Fluorit-Struktur. Der R-Wert fär 332 beobachtete (29 unabhängige) Röntgenreflexe beträgt 2,2%.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19926070120
Permalink
