Direct solid-state synthesis at high pressures of new mixed-metal oxynitrides: RZrO(2)N (R = Pr, Nd, and Sm)

Minghui Yang; Jennifer A Rodgers; Lawrence C Middler; Judith Oró-Solé; A Belén Jorge; Amparo Fuertes; J Paul Attfield

doi:10.1021/ic902020r

Direct solid-state synthesis at high pressures of new mixed-metal oxynitrides: RZrO(2)N (R = Pr, Nd, and Sm)

Inorg Chem. 2009 Dec 21;48(24):11498-500. doi: 10.1021/ic902020r.

Authors

Minghui Yang¹, Jennifer A Rodgers, Lawrence C Middler, Judith Oró-Solé, A Belén Jorge, Amparo Fuertes, J Paul Attfield

Affiliation

¹ CSEC and School of Chemistry, University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom.

PMID: 19911817
DOI: 10.1021/ic902020r

Abstract

New oxynitrides of RZrO(2)N (R = Pr, Nd, and Sm) have been synthesized via a direct solid-state reaction of R(2)O(3) with Zr(2)ON(2) 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) A, b = 8.1707(1) A, and c = 5.7093(1) A for NdZrO(2)N] and the structural distortion increases with decreasing R(3+) ionic radius. This method may enable new mixed-metal oxynitrides to be synthesized without the use of nitriding gas atmospheres.