DOI: 10.17188/1286051
title: Materials Data on Ti9Fe11O30 by Materials Project

description: Ti9Fe11O30 is Ilmenite-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are nine inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with four TiO6 octahedra, corners with five FeO6 octahedra, edges with three FeO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 39–62°. There are a spread of Ti–O bond distances ranging from 1.83–2.24 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with three FeO6 octahedra, corners with six TiO6 octahedra, edges with three FeO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 40–59°. There are a spread of Ti–O bond distances ranging from 1.83–2.22 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with three FeO6 octahedra, corners with six TiO6 octahedra, edges with three FeO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 39–62°. There are a spread of Ti–O bond distances ranging from 1.82–2.30 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with nine FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 42–62°. There are a spread of Ti–O bond distances ranging from 1.85–2.23 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with three equivalent TiO6 octahedra, corners with six FeO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent FeO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 40–64°. There are a spread of Ti–O bond distances ranging from 1.83–2.29 Å. In the sixth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with eight FeO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent FeO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 44–61°. There are a spread of Ti–O bond distances ranging from 1.90–2.09 Å. In the seventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with nine FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 43–63°. There are a spread of Ti–O bond distances ranging from 1.87–2.14 Å. In the eighth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with three TiO6 octahedra, corners with six FeO6 octahedra, edges with three FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 44–54°. There are a spread of Ti–O bond distances ranging from 1.91–2.14 Å. In the ninth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with three TiO6 octahedra, corners with six FeO6 octahedra, edges with three FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 45–57°. There are a spread of Ti–O bond distances ranging from 1.94–2.04 Å. There are eleven inequivalent Fe+2.18+ sites. In the first Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three TiO6 octahedra, corners with six FeO6 octahedra, an edgeedge with one FeO6 octahedra, edges with two equivalent TiO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 48–62°. There are a spread of Fe–O bond distances ranging from 2.09–2.28 Å. In the second Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with seven FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 47–63°. There are a spread of Fe–O bond distances ranging from 1.99–2.12 Å. In the third Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share a cornercorner with one FeO6 octahedra, corners with eight TiO6 octahedra, edges with three FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 43–63°. There are a spread of Fe–O bond distances ranging from 2.05–2.25 Å. In the fourth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three TiO6 octahedra, corners with six FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 53–62°. There are a spread of Fe–O bond distances ranging from 2.08–2.28 Å. In the fifth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with six TiO6 octahedra, edges with three FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 44–62°. There are a spread of Fe–O bond distances ranging from 2.07–2.26 Å. In the sixth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with six TiO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 45–64°. There are a spread of Fe–O bond distances ranging from 2.06–2.26 Å. In the seventh Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share a cornercorner with one FeO6 octahedra, corners with eight TiO6 octahedra, edges with three FeO6 octahedra, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 42–65°. There are a spread of Fe–O bond distances ranging from 2.05–2.23 Å. In the eighth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three equivalent TiO6 octahedra, corners with six FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 44–65°. There are a spread of Fe–O bond distances ranging from 1.93–2.31 Å. In the ninth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three FeO6 octahedra, corners with six TiO6 octahedra, an edgeedge with one FeO6 octahedra, edges with two equivalent TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 44–65°. There are a spread of Fe–O bond distances ranging from 2.04–2.32 Å. In the tenth Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three FeO6 octahedra, corners with six TiO6 octahedra, an edgeedge with one FeO6 octahedra, edges with two equivalent TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 44–66°. There are a spread of Fe–O bond distances ranging from 2.05–2.33 Å. In the eleventh Fe+2.18+ site, Fe+2.18+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with four TiO6 octahedra, corners with five FeO6 octahedra, edges with three TiO6 octahedra, and a faceface with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 45–66°. There are a spread of Fe–O bond distances ranging from 2.07–2.19 Å. There are thirty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Ti4+ and three Fe+2.18+ atoms. In the fourth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal pyramidal geometry to one Ti4+ and three Fe+2.18+ atoms. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the tenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the eleventh O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the twelfth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the sixteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the eighteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to one Ti4+ and three Fe+2.18+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the twentieth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-second O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-third O2- site, O2- is bonded to one Ti4+ and three Fe+2.18+ atoms to form a mixture of distorted edge and corner-sharing OTiFe3 trigonal pyramids. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-fifth O2- site, O2- is bonded to one Ti4+ and three Fe+2.18+ atoms to form a mixture of distorted edge and corner-sharing OTiFe3 trigonal pyramids. In the twenty-sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Ti4+ and two Fe+2.18+ atoms. In the twenty-eighth O2- site, O2- is bonded in a distorted see-saw-like geometry to one Ti4+ and three Fe+2.18+ atoms. In the twenty-ninth O2- site, O2- is bonded to two Ti4+ and two Fe+2.18+ atoms to form distorted OTi2Fe2 trigonal pyramids that share corners with two OTiFe3 trigonal pyramids and an edgeedge with one OTi2Fe2 trigonal pyramid. In the thirtieth O2- site, O2- is bonded to two Ti4+ and two Fe+2.18+ atoms to form a mixture of distorted edge and corner-sharing OTi2Fe2 trigonal pyramids.