Direct Solid-State Synthesis at High Pressures of New Mixed-Metal Oxynitrides: RZrO2N (R = Pr, Nd, and Sm)

Minghui Yang, Jennifer A. Rodgers, Lawrence C. Middler, Judith Oro-Sole, A. Belen Jorge, Amparo Fuertes, J. Paul Attfield

Research output: Contribution to journalArticlepeer-review

Abstract

New oxynitrides of RZrO2N (R = Pr, Nd, and Sm) have been synthesized via a direct solid-state reaction of R2O3 with Zr2ON2 at 1200-1500 degrees C under 2-3 GPa pressure. Powder X-ray diffraction shows that all three phases adopt an orthorhombic Pnma perovskite superstructure [a = 5.8537(1) angstrom, b = 8 1707(1) angstrom, and c = 5.7093(1) angstrom for NdZrO2N] and the structural distortion increases with decreasing R3+ ionic radius. This method may enable new mixed-metal oxynitrides to be synthesized without the use of nitriding gas atmospheres.

Original languageEnglish
Pages (from-to)11498-11500
Number of pages3
JournalInorganic Chemistry
Volume48
Issue number24
DOIs
Publication statusPublished - 21 Dec 2009

Keywords

  • NITRIDE
  • PEROVSKITES

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