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Materials Data on CaBiO3 by Materials Project

CaBiO3 is Orthorhombic Perovskite structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ca is bonded in a 4-coordinate geometry to eight O atoms. There are a spread of Ca–O bond distances ranging from 2.34–3.04 Å. There are two inequivalent Bi sites. In the first Bi site, Bi is bonded to six O atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedra tilt angles range from 40–45°. There are a spread of Bi–O bond distances ranging from 2.33–2.37 Å. In the second Bi site, Bi is bonded to six O atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedra tilt angles range from 40–45°. There are a spread of Bi–O bond distances ranging from 2.15–2.18 Å. There are three inequivalent O sites. In the first O site, O is bonded to two equivalent Ca and two Bi atoms to form distorted corner-sharing OCa2Bi2 trigonal pyramids. In the second O site, O is bonded in a 5-coordinate geometry to three equivalent Ca and two Bi atoms. In the third O site, O is bonded in a 5-coordinate geometry to three equivalent Ca and two Bi atoms.

36 MATERIALS SCIENCE↗

Materials Data on CaBiO3 by Materials Project

CaBiO3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Ca is bonded to six equivalent O atoms to form distorted CaO6 pentagonal pyramids that share corners with nine equivalent BiO6 octahedra, edges with three equivalent CaO6 pentagonal pyramids, and a faceface with one BiO6 octahedra. The corner-sharing octahedra tilt angles range from 46–66°. There are three shorter (2.36 Å) and three longer (2.48 Å) Ca–O bond lengths. Bi is bonded to six equivalent O atoms to form distorted BiO6 octahedra that share corners with nine equivalent CaO6 pentagonal pyramids, edges with three equivalent BiO6 octahedra, and a faceface with one CaO6 pentagonal pyramid. There are three shorter (2.26 Å) and three longer (2.29 Å) Bi–O bond lengths. O is bonded to two equivalent Ca and two equivalent Bi atoms to form a mixture of distorted edge and corner-sharing OCa2Bi2 trigonal pyramids.

36 MATERIALS SCIENCE↗