Materials Data on BaPrNbCoO6 by Materials Project
BaPrCoNbO6 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal I-4m2 space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with twelve equivalent BaO12 cuboctahedra, faces with six equivalent PrO12 cuboctahedra, faces with four equivalent NbO6 octahedra, and faces with four equivalent CoO6 octahedra. There are four shorter (2.85 Å) and eight longer (2.89 Å) Ba–O bond lengths. Pr3+ is bonded to twelve O2- atoms to form PrO12 cuboctahedra that share corners with twelve equivalent PrO12 cuboctahedra, faces with six equivalent BaO12 cuboctahedra, faces with four equivalent NbO6 octahedra, and faces with four equivalent CoO6 octahedra. There are four shorter (2.85 Å) and eight longer (2.89 Å) Pr–O bond lengths. Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six equivalent CoO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent PrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.00 Å) and two longer (2.01 Å) Nb–O bond lengths. Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six equivalent NbO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent PrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.03 Å) and two longer (2.13 Å) Co–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent Ba2+, two equivalent Pr3+, one Nb5+, and one Co2+ atom. In the second O2- site, O2- is bonded to two equivalent Ba2+, two equivalent Pr3+, one Nb5+, and one Co2+ atom to form a mixture of distorted corner and edge-sharing OBa2Pr2NbCo octahedra. The corner-sharing octahedra tilt angles range from 0–3°.