Site and oxidation-state specificity yielding dimensional control in perovskite ruthenates

Job T. Rijssenbeek, Sylvie Malo, Vincent Caignaert, Kenneth R Poeppelmeier

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Sr3CaRu2O9, a new 2:1 B-site ordered perovskite ruthenate, was synthesized and its structure determined based on powder X-ray, neutron and electron diffraction data. It is composed of one layer of CaO6 alternating with two layers of RuO6 perpendicular to the [111] axis of the cubic perovskite structure. The ordering leads to a {...-Ru-Ru-Ca-...} repeat unit along each of the pseudocubic directions. Sr3CaRu2O9 is the first example of this structure-type to include a majority metal with d electrons (Ru(V), d3). Three-dimensional Sr3CaRu2O9 can be transformed to the layered Ruddlesden-Popper phase Sr1.5Ca0.5RuO4 (i.e., Sr3CaRu2O8) by reduction at 1200 °C in flowing argon. The original structure can be restored by oxidation of Sr1.5Ca0.5RuO4 at 1000 °C in flowing oxygen. This remarkable transformation highlights the structural versatility afforded by the combination of ruthenium and calcium.

Original languageEnglish
Pages (from-to)2090-2091
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number10
DOIs
Publication statusPublished - Mar 13 2002

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Perovskite
Neutron Diffraction
Electrons
Oxidation
Ruthenium
Argon
Neutron diffraction
Electron diffraction
Powders
Calcium
Metals
X-Rays
Oxygen
X ray diffraction
perovskite
Direction compound

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Site and oxidation-state specificity yielding dimensional control in perovskite ruthenates. / Rijssenbeek, Job T.; Malo, Sylvie; Caignaert, Vincent; Poeppelmeier, Kenneth R.

In: Journal of the American Chemical Society, Vol. 124, No. 10, 13.03.2002, p. 2090-2091.

Research output: Contribution to journalArticle

Rijssenbeek, Job T. ; Malo, Sylvie ; Caignaert, Vincent ; Poeppelmeier, Kenneth R. / Site and oxidation-state specificity yielding dimensional control in perovskite ruthenates. In: Journal of the American Chemical Society. 2002 ; Vol. 124, No. 10. pp. 2090-2091.
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