Materials Data on NaPrO2 by Materials Project
NaPrO2 crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Na1+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Na–O bond lengths are 2.43 Å. Pr3+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing PrO6 octahedra. The corner-sharing octahedral tilt angles are 18°. There are four shorter (2.43 Å) and two longer (2.45 Å) Pr–O bond lengths. O2- is bonded to two equivalent Na1+ and three equivalent Pr3+ atoms to form a mixture of distorted edge and corner-sharing ONa2Pr3 square pyramids.
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