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

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

doi:10.1021/ja017586p

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

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

Northwestern University

Research output: Contribution to journal › Article

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 Sr_1.5Ca_0.5RuO₄ (i.e., Sr₃CaRu₂O₈) by reduction at 1200 °C in flowing argon. The original structure can be restored by oxidation of Sr_1.5Ca_0.5RuO₄ at 1000 °C in flowing oxygen. This remarkable transformation highlights the structural versatility afforded by the combination of ruthenium and calcium.

Original language	English
Pages (from-to)	2090-2091
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	124
Issue number	10
DOIs	https://doi.org/10.1021/ja017586p
Publication status	Published - Mar 13 2002

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Chemistry(all)

Cite this

Rijssenbeek, J. T., Malo, S., Caignaert, V., & Poeppelmeier, K. R. (2002). Site and oxidation-state specificity yielding dimensional control in perovskite ruthenates. Journal of the American Chemical Society, 124(10), 2090-2091. https://doi.org/10.1021/ja017586p

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title = "Site and oxidation-state specificity yielding dimensional control in perovskite ruthenates",

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.",

author = "Rijssenbeek, {Job T.} and Sylvie Malo and Vincent Caignaert and Poeppelmeier, {Kenneth R}",

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AU - Rijssenbeek, Job T.

AU - Malo, Sylvie

AU - Caignaert, Vincent

AU - Poeppelmeier, Kenneth R

PY - 2002/3/13

Y1 - 2002/3/13

N2 - 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.

AB - 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.

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10.1021/ja017586p