DOI: 10.17188/1748762
title: Materials Data on Sr8Cu(WO6)3 by Materials Project

description: Sr8CuW3O18 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are sixteen inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.45–2.68 Å. In the second Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.53–2.65 Å. In the third Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.47–2.78 Å. In the fourth Sr2+ site, Sr2+ is bonded to six O2- atoms to form distorted SrO6 pentagonal pyramids that share corners with three SrO6 octahedra and edges with three WO6 octahedra. The corner-sharing octahedra tilt angles range from 73–75°. There are a spread of Sr–O bond distances ranging from 2.51–2.59 Å. In the fifth Sr2+ site, Sr2+ is bonded to six O2- atoms to form distorted SrO6 pentagonal pyramids that share corners with three SrO6 octahedra and edges with three WO6 octahedra. The corner-sharing octahedral tilt angles are 72°. There are a spread of Sr–O bond distances ranging from 2.51–2.59 Å. In the sixth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.46–2.76 Å. In the seventh Sr2+ site, Sr2+ is bonded in a 3-coordinate geometry to ten O2- atoms. There are a spread of Sr–O bond distances ranging from 2.46–3.27 Å. In the eighth Sr2+ site, Sr2+ is bonded in a 3-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.53–3.19 Å. In the ninth Sr2+ site, Sr2+ is bonded in a 3-coordinate geometry to seven O2- atoms. There are a spread of Sr–O bond distances ranging from 2.50–3.00 Å. In the tenth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.50–2.67 Å. In the eleventh Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.43–2.70 Å. In the twelfth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.51–2.69 Å. In the thirteenth Sr2+ site, Sr2+ is bonded to six O2- atoms to form SrO6 octahedra that share corners with six WO6 octahedra. The corner-sharing octahedra tilt angles range from 28–40°. There are a spread of Sr–O bond distances ranging from 2.40–2.53 Å. In the fourteenth Sr2+ site, Sr2+ is bonded to six O2- atoms to form SrO6 octahedra that share corners with six WO6 octahedra and corners with two equivalent SrO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 26–35°. There are a spread of Sr–O bond distances ranging from 2.41–2.52 Å. In the fifteenth Sr2+ site, Sr2+ is bonded to six O2- atoms to form SrO6 octahedra that share corners with six WO6 octahedra and a cornercorner with one SrO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 28–33°. There are a spread of Sr–O bond distances ranging from 2.40–2.52 Å. In the sixteenth Sr2+ site, Sr2+ is bonded to six O2- atoms to form SrO6 octahedra that share corners with six WO6 octahedra and corners with three SrO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 29–36°. There are a spread of Sr–O bond distances ranging from 2.41–2.51 Å. There are six inequivalent W6+ sites. In the first W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with five SrO6 octahedra. The corner-sharing octahedra tilt angles range from 31–40°. There are a spread of W–O bond distances ranging from 1.90–2.14 Å. In the second W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three SrO6 octahedra. The corner-sharing octahedra tilt angles range from 26–29°. There are a spread of W–O bond distances ranging from 1.89–2.07 Å. In the third W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with four SrO6 octahedra. The corner-sharing octahedra tilt angles range from 28–34°. There are a spread of W–O bond distances ranging from 1.90–2.07 Å. In the fourth W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with five SrO6 octahedra and an edgeedge with one SrO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 30–35°. There are a spread of W–O bond distances ranging from 1.94–1.98 Å. In the fifth W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with four SrO6 octahedra and edges with two equivalent SrO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 28–32°. There are a spread of W–O bond distances ranging from 1.92–1.99 Å. In the sixth W6+ site, W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three SrO6 octahedra and edges with three SrO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 29–33°. There are a spread of W–O bond distances ranging from 1.93–2.00 Å. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of Cu–O bond distances ranging from 1.91–1.96 Å. In the second Cu2+ site, Cu2+ is bonded in a distorted trigonal planar geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.95–2.77 Å. There are thirty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted see-saw-like geometry to three Sr2+ and one W6+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one W6+, and one Cu2+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one W6+, and one Cu2+ atom. In the fourth O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form distorted corner-sharing OSr3W trigonal pyramids. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+, one W6+, and one Cu2+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one W6+, and one Cu2+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one W6+, and one Cu2+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one W6+, and one Cu2+ atom. In the ninth O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form distorted corner-sharing OSr3W trigonal pyramids. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one W6+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one W6+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one W6+ atom. In the fourteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one W6+ atom. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Sr2+ and one W6+ atom. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Sr2+ and one W6+ atom. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one W6+ atom. In the nineteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twentieth O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form a mixture of distorted edge and corner-sharing OSr3W tetrahedra. In the twenty-first O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twenty-second O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form a mixture of distorted edge and corner-sharing OSr3W tetrahedra. In the twenty-third O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form a mixture of distorted edge and corner-sharing OSr3W tetrahedra. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twenty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twenty-sixth O2- site, O2- is bonded to three Sr2+ and one W6+ atom to form a mixture of distorted edge and corner-sharing OSr3W tetrahedra. In the twenty-seventh O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twenty-eighth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the twenty-ninth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+, one W6+, and one Cu2+ atom. In the thirtieth O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and one W6+ atom. In the thirty-first O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the thirty-second O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the thirty-third O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and one W6+ atom. In the thirty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the thirty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one W6+ atom. In the thirty-sixth O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and one W6+ atom.