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Acta Cryst. (2007). E63, i184 [ doi:10.1107/S1600536807046727 ]
Abstract: Single crystals of the title compound, tripraseodinium indium oxide, have been synthesized from a high-temperature reaction using a Pr-Cu eutectic mixture as flux. Based on its powder X-ray diffraction pattern, the product of the reaction was believed to be Pr3In with the long known cubic AuCu3 structure. However, structure refinements from single-crystal X-ray diffraction data confirmed that it is rather an oxygen-stabilized Pr3InO with the inverse perovskite structure (Pearson's code cP5). The latter structure can be described as being built of corner-sharing Pr6O octahedra with the In atoms occupying the cube-octahedral cavities. All three atoms in the asymmetric unit are in special positions: Pr 4/mm.m, In m
m and O mm.
Online 29 September 2007
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