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Materials Data on ThTaN3 by Materials Project

ThTaN3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Th4+ is bonded to twelve equivalent N3- atoms to form ThN12 cuboctahedra that share corners with twelve equivalent ThN12 cuboctahedra, faces with six equivalent ThN12 cuboctahedra, and faces with eight equivalent TaN6 octahedra. All Th–N bond lengths are 2.87 Å. Ta5+ is bonded to six equivalent N3- atoms to form TaN6 octahedra that share corners with six equivalent TaN6 octahedra and faces with eight equivalent ThN12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ta–N bond lengths are 2.03 Å. N3- is bonded in a distorted linear geometry to four equivalent Th4+ and two equivalent Ta5+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on ThTaN3 by Materials Project

ThTaN3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Th4+ is bonded in a 8-coordinate geometry to eight N3- atoms. There are a spread of Th–N bond distances ranging from 2.39–2.82 Å. Ta5+ is bonded to six N3- atoms to form corner-sharing TaN6 octahedra. The corner-sharing octahedra tilt angles range from 29–31°. There are four shorter (2.09 Å) and two longer (2.11 Å) Ta–N bond lengths. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to two equivalent Th4+ and two equivalent Ta5+ atoms to form distorted corner-sharing NTh2Ta2 tetrahedra. In the second N3- site, N3- is bonded in a 5-coordinate geometry to three equivalent Th4+ and two equivalent Ta5+ atoms.

36 MATERIALS SCIENCE↗