English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/31239
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Sr18Ru1.9Bi4.1O33: crystallization of a Ru(V)/Bi(V) oxide from molten hydroxide

AuthorsMartín-González, Marisol; Delattre, James L.; Stacy, Angelica
KeywordsMolten hydroxide
Ruthenates
Bismuthates
Perovskites
Cryolite
Elpasolite
Issue DateJun-2003
PublisherElsevier
CitationJournal of Solid State Chemistry 173(1): 203-208 (2003)
AbstractSingle crystals of a new complex oxide, Sr18Ru1.9Bi4.1O33, were precipitated from a mixture of molten alkali and alkaline earth metal hydroxides at 750°C. The structure was determined from a ruby-red crystal using single-crystal X-ray diffraction. Sr18Ru1.88Bi4.12O33 crystallizes in the space group C2/c (monoclinic) and has unit-cell dimensions: a=10.2102(11) Å, b=17.882(2) Å, c=19.579(2) Å, and β=102.043(2)°. The structure (refined to R1=4.5%, wR2=9.2%) is an unusual ABO3 defect perovskite, with 1/12 th of the oxygen positions vacant. All the A sites and half of the B sites are occupied by Sr2+, while the remaining B sites are occupied by Bi5+ or Ru5+. The oxygen atom vacancies are located within the Bi coordination sphere exclusively. The bonding in the BO3 sublattice is less covalent than that in the perovskite archetype from which it is derived due to the presence of 50% Sr2+ on the B sites. Thus, the structure of Sr18Ru1.9Bi4.1O33 can also be viewed as being made up of isolated bismuthate anions (BiO55−, BiO5.56− and BiO67−) and ruthenate anions (RuO67−) separated by strontium cations.
Description6 páginas, 3 figuras, 4 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/S0022-4596(03)00025-2
URIhttp://hdl.handle.net/10261/31239
DOI10.1016/S0022-4596(03)00025-2
ISSN0022-4596
Appears in Collections:(IMN-CNM) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.