DOI: 10.17188/1655718
title: Materials Data on K4Ba2Na4Ti8MnSi16(W4O29)2 by Materials Project

description: K4Na4Ba2Ti8MnSi16(W4O29)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 9-coordinate geometry to five O atoms. There are a spread of K–O bond distances ranging from 2.84–3.26 Å. In the second K site, K is bonded in a 6-coordinate geometry to six O atoms. There are a spread of K–O bond distances ranging from 2.75–3.27 Å. Na is bonded in a 3-coordinate geometry to one W and four O atoms. The Na–W bond length is 3.01 Å. There are a spread of Na–O bond distances ranging from 2.27–2.72 Å. Ba is bonded in a 4-coordinate geometry to four O atoms. There are two shorter (2.83 Å) and two longer (2.98 Å) Ba–O bond lengths. There are three inequivalent Ti sites. In the first Ti site, Ti is bonded to six O atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra and corners with four SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are a spread of Ti–O bond distances ranging from 1.95–2.07 Å. In the second Ti site, Ti is bonded to six O atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with four SiO4 tetrahedra, and an edgeedge with one MnO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Ti–O bond distances ranging from 1.94–2.06 Å. In the third Ti site, Ti is bonded to six O atoms to form TiO6 octahedra that share corners with two TiO6 octahedra and corners with four SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–55°. There are a spread of Ti–O bond distances ranging from 1.79–2.29 Å. There are two inequivalent W sites. In the first W site, W is bonded in a 3-coordinate geometry to three O atoms. There are a spread of W–O bond distances ranging from 2.06–2.22 Å. In the second W site, W is bonded in a 4-coordinate geometry to one Na and three O atoms. There are a spread of W–O bond distances ranging from 2.32–2.51 Å. Mn is bonded to six O atoms to form MnO6 octahedra that share corners with four equivalent SiO4 tetrahedra and edges with two equivalent TiO6 octahedra. There are two shorter (2.09 Å) and four longer (2.24 Å) Mn–O bond lengths. There are four inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share a cornercorner with one MnO6 octahedra, corners with two TiO6 octahedra, and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 48–65°. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two TiO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–53°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two TiO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–55°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the fourth Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two TiO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–54°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. There are seventeen inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to one Na, one Ti, and one Si atom. In the second O site, O is bonded in a 1-coordinate geometry to one K, one Ti, one W, and one Si atom. In the third O site, O is bonded in a 1-coordinate geometry to one K, one Ti, one W, and one Si atom. In the fourth O site, O is bonded in a trigonal non-coplanar geometry to two equivalent W and one Mn atom. In the fifth O site, O is bonded in a distorted bent 150 degrees geometry to one K and two equivalent Si atoms. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the seventh O site, O is bonded in a distorted bent 150 degrees geometry to two Ti atoms. In the eighth O site, O is bonded in a distorted bent 150 degrees geometry to one K and two equivalent Si atoms. In the ninth O site, O is bonded in a distorted bent 150 degrees geometry to two equivalent K and two equivalent Si atoms. In the tenth O site, O is bonded in a 2-coordinate geometry to one K and two equivalent Si atoms. In the eleventh O site, O is bonded in a 2-coordinate geometry to one K, one Ba, one Ti, and one Si atom. In the twelfth O site, O is bonded in a 3-coordinate geometry to one Ti, one Mn, and one Si atom. In the thirteenth O site, O is bonded in a 4-coordinate geometry to two equivalent Na and two Si atoms. In the fourteenth O site, O is bonded in a distorted trigonal non-coplanar geometry to one Na, one Ti, and one Si atom. In the fifteenth O site, O is bonded in a distorted bent 150 degrees geometry to one Ti, one W, and one Si atom. In the sixteenth O site, O is bonded in a 2-coordinate geometry to one Ba, one Ti, and one Si atom. In the seventeenth O site, O is bonded in a 4-coordinate geometry to two Ti and two W atoms.