Materials Data on K3LiTi7O16 by Materials Project
K3LiTi7O16 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.63–3.11 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.69–3.01 Å. In the third K1+ site, K1+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.64–3.22 Å. Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two equivalent TiO6 octahedra and edges with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 31–32°. There are a spread of Li–O bond distances ranging from 2.05–2.23 Å. There are seven inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.73–2.39 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, an edgeedge with one LiO6 octahedra, and edges with three TiO6 octahedra. The corner-sharing octahedra tilt angles range from 22–30°. There are a spread of Ti–O bond distances ranging from 1.89–2.16 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent TiO6 octahedra, an edgeedge with one LiO6 octahedra, and edges with three TiO6 octahedra. The corner-sharing octahedra tilt angles range from 23–29°. There are a spread of Ti–O bond distances ranging from 1.89–2.21 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, an edgeedge with one LiO6 octahedra, and edges with three TiO6 octahedra. The corner-sharing octahedra tilt angles range from 23–29°. There are a spread of Ti–O bond distances ranging from 1.89–2.15 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent LiO6 octahedra and edges with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 31–32°. There are a spread of Ti–O bond distances ranging from 1.87–2.17 Å. In the sixth Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.73–2.40 Å. In the seventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent TiO6 octahedra, an edgeedge with one LiO6 octahedra, and edges with three TiO6 octahedra. The corner-sharing octahedra tilt angles range from 22–30°. There are a spread of Ti–O bond distances ranging from 1.89–2.20 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two K1+ and two Ti4+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to four Ti4+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Li1+, and one Ti4+ atom. In the fourth O2- site, O2- is bonded to one Li1+ and three Ti4+ atoms to form distorted OLiTi3 trigonal pyramids that share corners with four OTi4 trigonal pyramids and edges with two OLiTi3 trigonal pyramids. In the fifth O2- site, O2- is bonded to four Ti4+ atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the sixth O2- site, O2- is bonded to one Li1+ and three Ti4+ atoms to form a mixture of distorted edge and corner-sharing OLiTi3 trigonal pyramids. In the seventh O2- site, O2- is bonded in a distorted water-like geometry to two K1+ and two Ti4+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one K1+ and two Ti4+ atoms. In the ninth O2- site, O2- is bonded to one Li1+ and three Ti4+ atoms to form a mixture of distorted edge and corner-sharing OLiTi3 trigonal pyramids. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+ and two Ti4+ atoms. In the eleventh O2- site, O2- is bonded to one Li1+ and three Ti4+ atoms to form a mixture of distorted edge and corner-sharing OLiTi3 trigonal pyramids. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Li1+, and one Ti4+ atom. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to four Ti4+ atoms. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+ and two Ti4+ atoms. In the fifteenth O2- site, O2- is bonded to four Ti4+ atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the sixteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one K1+ and two Ti4+ atoms.