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Crystal Structure of New 10-Layer Perovskite-Related Oxyhalide, Ba5Ru1.6W0.4Cl2O9

✍ Scribed by Seung-Tae Hong; Arthur W. Sleight

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 293 KB
Volume: 132
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1997.7488

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✦ Synopsis

Crystals of Ba 5 Ru 1.6 W 0.4 Cl 2 O 9 were prepared in a BaCl 2 flux and investigated by X-ray diffraction methods. The structure of this new compound was solved and refined in the hexagonal symmetry space group P6 3 /mmc with a‫)2(718.5؍‬ A > , c‫؍‬ 24.839(2) A > , and Z‫2؍‬ to a final R of 0.0383. The structure of Ba 5 Ru 1.6 W 0.4 Cl 2 O 9 displays a 10-layer stacking sequence of mixed [BaO 3 ] and [BaCl] layers containing isolated (Ru/W) 2 O 9 units as face-shared octahedra. Isolated face-shared Ru 2 O 9 units are also found in Ba 5 Ru 2 Cl 2 O 9 which otherwise has a very different structure. Ba 5 Ru 1.6 W 0.4 Cl 2 O 9 appears to be the first example of Ru and W sharing the same crystallographic site.

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