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Sr9Ni6.64O21: A New Member (n= 2) of the Perovskite-RelatedA3n+3An′B3+nO9+6nFamily

✍ Scribed by J. Campá; E. Gutiérrez-Puebla; A. Monge; I. Rasines; C. Ruı́z-Valero

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
322 KB
Volume
126
Category
Article
ISSN
0022-4596

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✦ Synopsis

Crystals of a new phase

Sr 9 Ni 6.64 O 21 were grown. This compound is the n ‫؍‬ 2 member of the A 3n؉3 A n B n؉3 O 6n؉9 series. The composition and the crystal structure have been established from X-ray single crystal diffraction data. The structure contains face-shared chains of NiO 6 polyhedra parallel to the c c axis and is related with the hexagonal 2H polytype perovskite. Sr 9 Ni 6.64 O 21 crystallizes in the space group R3c (No. 167) with a ‫؍‬ 9.467(2) A ˚, c ‫؍‬ 35.87(5) A ˚, V ‫؍‬ 2784.(4) A ˚3, and Z ‫؍‬ 6. A comparison is made between the structure of the title compound and the other members of the series.

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