DOI: 10.17188/1267954
title: Materials Data on Ti2Cu9(B3O11)2 by Materials Project

description: Ti2Cu9(B3O11)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent TiO6 octahedra, edges with two TiO6 octahedra, and edges with two equivalent CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 30–31°. There are a spread of Ti–O bond distances ranging from 1.86–2.23 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, edges with two TiO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 30–31°. There are a spread of Ti–O bond distances ranging from 1.88–2.14 Å. There are nine inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.90–2.12 Å. In the second Cu2+ site, Cu2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.90–2.05 Å. In the third Cu2+ site, Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share edges with three TiO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.96–2.34 Å. In the fourth Cu2+ site, Cu2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.95–1.99 Å. In the fifth Cu2+ site, Cu2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There is three shorter (1.94 Å) and one longer (1.98 Å) Cu–O bond length. In the sixth Cu2+ site, Cu2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.92–1.96 Å. In the seventh Cu2+ site, Cu2+ is bonded in a square co-planar geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.91–1.94 Å. In the eighth Cu2+ site, Cu2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.94–2.00 Å. In the ninth Cu2+ site, Cu2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cu–O bond distances ranging from 1.88–2.77 Å. There are six inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.38 Å) B–O bond length. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.40 Å. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.38 Å. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.41 Å) B–O bond length. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.35 Å) and two longer (1.39 Å) B–O bond length. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.36 Å) and two longer (1.39 Å) B–O bond length. There are twenty-two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Ti4+, one Cu2+, and one B3+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Ti4+ and three Cu2+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the ninth O2- site, O2- is bonded to one Ti4+ and three Cu2+ atoms to form a mixture of distorted corner and edge-sharing OTiCu3 tetrahedra. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to three Ti4+ atoms. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one Cu2+ and two B3+ atoms. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ti4+ and two Cu2+ atoms. In the fourteenth O2- site, O2- is bonded to three Ti4+ and one Cu2+ atom to form distorted OTi3Cu trigonal pyramids that share a cornercorner with one OTiCu3 tetrahedra, an edgeedge with one OTiCu3 tetrahedra, and an edgeedge with one OTi3Cu trigonal pyramid. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the seventeenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom. In the eighteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ti4+ and two Cu2+ atoms. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one B3+ atom. In the twentieth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ti4+, one Cu2+, and one B3+ atom. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom. In the twenty-second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one B3+ atom.