Materials Data on Nd10Ti12O39 by Materials Project
Nd10Ti12O39 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are ten inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.24–2.74 Å. In the second Nd3+ site, Nd3+ is bonded to seven O2- atoms to form distorted NdO7 hexagonal pyramids that share an edgeedge with one NdO8 hexagonal bipyramid and edges with six TiO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.22–2.64 Å. In the third Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.18–2.71 Å. In the fourth Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.22–2.92 Å. In the fifth Nd3+ site, Nd3+ is bonded to eight O2- atoms to form distorted NdO8 hexagonal bipyramids that share edges with three NdO8 hexagonal bipyramids, an edgeedge with one NdO7 hexagonal pyramid, and edges with six TiO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.30–2.66 Å. In the sixth Nd3+ site, Nd3+ is bonded to eight O2- atoms to form distorted NdO8 hexagonal bipyramids that share edges with two NdO8 hexagonal bipyramids, an edgeedge with one NdO7 hexagonal pyramid, and edges with six TiO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.30–2.62 Å. In the seventh Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.17–2.85 Å. In the eighth Nd3+ site, Nd3+ is bonded to eight O2- atoms to form distorted NdO8 hexagonal bipyramids that share edges with three NdO8 hexagonal bipyramids, an edgeedge with one NdO7 hexagonal pyramid, and edges with six TiO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.28–2.65 Å. In the ninth Nd3+ site, Nd3+ is bonded to seven O2- atoms to form distorted NdO7 hexagonal pyramids that share edges with two NdO8 hexagonal bipyramids and edges with six TiO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.22–2.69 Å. In the tenth Nd3+ site, Nd3+ is bonded in a distorted hexagonal planar geometry to six O2- atoms. There are a spread of Nd–O bond distances ranging from 2.30–2.66 Å. There are twelve inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, an edgeedge with one NdO8 hexagonal bipyramid, and edges with two NdO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 39–60°. There are a spread of Ti–O bond distances ranging from 1.87–2.14 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, an edgeedge with one NdO8 hexagonal bipyramid, and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 39–60°. There are a spread of Ti–O bond distances ranging from 1.87–2.16 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra and edges with two NdO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 31–54°. There are a spread of Ti–O bond distances ranging from 1.88–2.13 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, edges with two NdO8 hexagonal bipyramids, and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 45–57°. There are a spread of Ti–O bond distances ranging from 1.95–2.05 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 31–48°. There are a spread of Ti–O bond distances ranging from 1.86–2.14 Å. In the sixth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra and edges with two NdO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 37–57°. There are a spread of Ti–O bond distances ranging from 1.90–2.11 Å. In the seventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, an edgeedge with one NdO8 hexagonal bipyramid, and edges with two NdO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 37–57°. There are a spread of Ti–O bond distances ranging from 1.94–2.09 Å. In the eighth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 34–58°. There are a spread of Ti–O bond distances ranging from 1.87–2.20 Å. In the ninth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra and edges with two NdO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 39–58°. There are a spread of Ti–O bond distances ranging from 1.93–2.01 Å. In the tenth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, edges with four NdO8 hexagonal bipyramids, and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 40–58°. There are a spread of Ti–O bond distances ranging from 1.92–2.07 Å. In the eleventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, an edgeedge with one NdO8 hexagonal bipyramid, and an edgeedge with one NdO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 37–59°. There are a spread of Ti–O bond distances ranging from 1.86–2.14 Å. In the twelfth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six TiO6 octahedra, edges with two NdO8 hexagonal bipyramids, and edges with two equivalent NdO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 38–59°. There are a spread of Ti–O bond distances ranging from 1.92–2.03 Å. There are thirty-nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Nd3+ and two Ti4+ atoms. In the third O2- site, O2- is bonded to two Nd3+ and two Ti4+ atoms to form distorted corner-sharing ONd2Ti2 tetrahedra. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Nd3+ and two Ti4+ atoms. In the sixth O2- site, O2- is bonded to two Nd3+ and two Ti4+ atoms to form distorted corner-sharing ONd2Ti2 tetrahedra. In the seventh O2- site, O2- is bonded to two Nd3+ and two Ti4+ atoms to form distorted corner-sharing ONd2Ti2 tetrahedra. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the tenth O2- site, O2- is bonded to two Nd3+ and two Ti4+ atoms to form distorted corner-sharing ONd2Ti2 tetrahedra. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the sixteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ti4+ atoms. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the nineteenth O2- site, O2- is bonded to four Nd3+ atoms to form corner-sharing ONd4 tetrahedra. In the twentieth O2- site, O2- is bonded to four Nd3+ atoms to form corner-sharing ONd4 tetrahedra. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-second O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-third O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the twenty-ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirtieth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-first O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-second O2- site, O2- is bonded to four Nd3+ atoms to form corner-sharing ONd4 tetrahedra. In the thirty-third O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Nd3+ and two Ti4+ atoms. In the thirty-seventh O2- site, O2- is bonded to two Nd3+ and two Ti4+ atoms to form distorted corner-sharing ONd2Ti2 tetrahedra. In the thirty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms. In the thirty-ninth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ti4+ atoms.