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Materials Data on Ce2TiO5 by Materials Project

Ce2TiO5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Ce3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ce–O bond distances ranging from 2.28–2.68 Å. Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 46°. There are a spread of Ti–O bond distances ranging from 2.00–2.09 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ce3+ and one Ti4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three equivalent Ce3+ and one Ti4+ atom. In the third O2- site, O2- is bonded to two equivalent Ce3+ and two equivalent Ti4+ atoms to form distorted corner-sharing OCe2Ti2 trigonal pyramids.

36 MATERIALS SCIENCE↗

Materials Data on CeTiO3 by Materials Project

CeTiO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ce3+ is bonded to twelve equivalent O2- atoms to form CeO12 cuboctahedra that share corners with twelve equivalent CeO12 cuboctahedra, faces with six equivalent CeO12 cuboctahedra, and faces with eight equivalent TiO6 octahedra. All Ce–O bond lengths are 2.79 Å. Ti3+ is bonded to six equivalent O2- atoms to form TiO6 octahedra that share corners with six equivalent TiO6 octahedra and faces with eight equivalent CeO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ti–O bond lengths are 1.97 Å. O2- is bonded in a distorted linear geometry to four equivalent Ce3+ and two equivalent Ti3+ atoms.

36 MATERIALS SCIENCE↗