DOI: 10.17188/1709600
title: Materials Data on Yb9B5S21 by Materials Project

description: Yb9B5S21 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eighteen inequivalent Yb3+ sites. In the first Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share corners with two YbS7 pentagonal bipyramids, corners with two BS4 tetrahedra, a cornercorner with one BS4 trigonal pyramid, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS7 pentagonal bipyramid. There are a spread of Yb–S bond distances ranging from 2.79–3.07 Å. In the second Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share corners with two YbS7 pentagonal bipyramids, a cornercorner with one YbS6 pentagonal pyramid, corners with two BS4 tetrahedra, an edgeedge with one YbS7 pentagonal bipyramid, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS7 pentagonal bipyramid. There are a spread of Yb–S bond distances ranging from 2.83–3.07 Å. In the third Yb3+ site, Yb3+ is bonded in a 5-coordinate geometry to five S2- atoms. There are a spread of Yb–S bond distances ranging from 2.71–3.02 Å. In the fourth Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share a cornercorner with one YbS7 pentagonal bipyramid, a cornercorner with one YbS6 pentagonal pyramid, corners with two BS4 tetrahedra, an edgeedge with one YbS7 pentagonal bipyramid, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS7 pentagonal bipyramid. There are a spread of Yb–S bond distances ranging from 2.84–3.07 Å. In the fifth Yb3+ site, Yb3+ is bonded in a 5-coordinate geometry to five S2- atoms. There are a spread of Yb–S bond distances ranging from 2.74–2.92 Å. In the sixth Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share corners with two YbS7 pentagonal bipyramids, corners with two BS4 tetrahedra, a cornercorner with one BS4 trigonal pyramid, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS6 pentagonal pyramid. There are a spread of Yb–S bond distances ranging from 2.77–3.01 Å. In the seventh Yb3+ site, Yb3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Yb–S bond distances ranging from 2.79–2.93 Å. In the eighth Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share corners with two YbS7 pentagonal bipyramids, corners with two BS4 tetrahedra, a cornercorner with one BS4 trigonal pyramid, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS7 pentagonal bipyramid. There are a spread of Yb–S bond distances ranging from 2.74–3.17 Å. In the ninth Yb3+ site, Yb3+ is bonded to six S2- atoms to form distorted YbS6 pentagonal pyramids that share corners with three YbS7 pentagonal bipyramids, corners with two BS4 tetrahedra, an edgeedge with one BS4 tetrahedra, and a faceface with one YbS7 pentagonal bipyramid. There are a spread of Yb–S bond distances ranging from 2.78–2.96 Å. In the tenth Yb3+ site, Yb3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Yb–S bond distances ranging from 2.80–3.08 Å. In the eleventh Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to eight S2- atoms. There are a spread of Yb–S bond distances ranging from 2.71–3.37 Å. In the twelfth Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Yb–S bond distances ranging from 2.76–3.13 Å. In the thirteenth Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share a cornercorner with one YbS7 pentagonal bipyramid, a cornercorner with one YbS6 pentagonal pyramid, corners with two BS4 tetrahedra, an edgeedge with one YbS7 pentagonal bipyramid, and an edgeedge with one BS4 tetrahedra. There are a spread of Yb–S bond distances ranging from 2.71–3.00 Å. In the fourteenth Yb3+ site, Yb3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Yb–S bond distances ranging from 2.78–3.28 Å. In the fifteenth Yb3+ site, Yb3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Yb–S bond distances ranging from 2.72–3.29 Å. In the sixteenth Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Yb–S bond distances ranging from 2.76–3.20 Å. In the seventeenth Yb3+ site, Yb3+ is bonded to seven S2- atoms to form distorted YbS7 pentagonal bipyramids that share corners with two YbS7 pentagonal bipyramids, corners with two BS4 tetrahedra, an edgeedge with one YbS7 pentagonal bipyramid, and an edgeedge with one BS4 tetrahedra. There are a spread of Yb–S bond distances ranging from 2.72–3.06 Å. In the eighteenth Yb3+ site, Yb3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Yb–S bond distances ranging from 2.76–3.35 Å. There are ten inequivalent B3+ sites. In the first B3+ site, B3+ is bonded to four S2- atoms to form distorted BS4 tetrahedra that share corners with two YbS7 pentagonal bipyramids and a cornercorner with one YbS6 pentagonal pyramid. There are a spread of B–S bond distances ranging from 1.86–2.01 Å. In the second B3+ site, B3+ is bonded to four S2- atoms to form distorted BS4 tetrahedra that share corners with three YbS7 pentagonal bipyramids and an edgeedge with one YbS7 pentagonal bipyramid. There are a spread of B–S bond distances ranging from 1.87–2.00 Å. In the third B3+ site, B3+ is bonded to four S2- atoms to form distorted BS4 tetrahedra that share corners with two YbS7 pentagonal bipyramids and an edgeedge with one YbS7 pentagonal bipyramid. There are a spread of B–S bond distances ranging from 1.88–1.99 Å. In the fourth B3+ site, B3+ is bonded to four S2- atoms to form BS4 tetrahedra that share corners with two YbS7 pentagonal bipyramids, a cornercorner with one YbS6 pentagonal pyramid, and edges with two YbS7 pentagonal bipyramids. There is three shorter (1.95 Å) and one longer (1.96 Å) B–S bond length. In the fifth B3+ site, B3+ is bonded to four S2- atoms to form BS4 tetrahedra that share corners with two YbS7 pentagonal bipyramids, an edgeedge with one YbS7 pentagonal bipyramid, and an edgeedge with one YbS6 pentagonal pyramid. There is three shorter (1.94 Å) and one longer (1.96 Å) B–S bond length. In the sixth B3+ site, B3+ is bonded to four S2- atoms to form BS4 tetrahedra that share corners with three YbS7 pentagonal bipyramids and edges with two YbS7 pentagonal bipyramids. There are a spread of B–S bond distances ranging from 1.93–1.96 Å. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three S2- atoms. All B–S bond lengths are 1.83 Å. In the eighth B3+ site, B3+ is bonded to four S2- atoms to form distorted BS4 trigonal pyramids that share corners with three YbS7 pentagonal bipyramids and corners with two SYb3S trigonal pyramids. There are a spread of B–S bond distances ranging from 1.84–2.54 Å. In the ninth B3+ site, B3+ is bonded in a trigonal planar geometry to three S2- atoms. There is two shorter (1.83 Å) and one longer (1.84 Å) B–S bond length. In the tenth B3+ site, B3+ is bonded in a trigonal planar geometry to four S2- atoms. There are a spread of B–S bond distances ranging from 1.83–2.75 Å. There are forty-two inequivalent S2- sites. In the first S2- site, S2- is bonded in a rectangular see-saw-like geometry to three Yb3+ and one B3+ atom. In the second S2- site, S2- is bonded in a 1-coordinate geometry to three Yb3+ and one B3+ atom. In the third S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the fourth S2- site, S2- is bonded in a 1-coordinate geometry to four Yb3+ and one B3+ atom. In the fifth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the sixth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Yb3+ and one B3+ atom. In the seventh S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the eighth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Yb3+ and one B3+ atom. In the ninth S2- site, S2- is bonded in a 1-coordinate geometry to two Yb3+ and one B3+ atom. In the tenth S2- site, S2- is bonded in a 1-coordinate geometry to two Yb3+, one B3+, and one S2- atom. The S–S bond length is 2.14 Å. In the eleventh S2- site, S2- is bonded in a 1-coordinate geometry to two Yb3+ and one B3+ atom. In the twelfth S2- site, S2- is bonded in a 5-coordinate geometry to four Yb3+ and one B3+ atom. In the thirteenth S2- site, S2- is bonded in a 5-coordinate geometry to four Yb3+ and one B3+ atom. In the fourteenth S2- site, S2- is bonded in a 1-coordinate geometry to two Yb3+ and one B3+ atom. In the fifteenth S2- site, S2- is bonded in a 2-coordinate geometry to two Yb3+ and one B3+ atom. In the sixteenth S2- site, S2- is bonded in a 4-coordinate geometry to two Yb3+, one B3+, and one S2- atom. In the seventeenth S2- site, S2- is bonded in a 5-coordinate geometry to four Yb3+ and one B3+ atom. In the eighteenth S2- site, S2- is bonded in a distorted single-bond geometry to two Yb3+ and one B3+ atom. In the nineteenth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twentieth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twenty-first S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one S2- atom. The S–S bond length is 2.03 Å. In the twenty-second S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twenty-third S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one S2- atom. The S–S bond length is 2.03 Å. In the twenty-fourth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twenty-fifth S2- site, S2- is bonded in a 4-coordinate geometry to two Yb3+, one B3+, and two S2- atoms. In the twenty-sixth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twenty-seventh S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the twenty-eighth S2- site, S2- is bonded to three Yb3+ and one S2- atom to form distorted SYb3S trigonal pyramids that share a cornercorner with one BS4 trigonal pyramid and an edgeedge with one SYb3S trigonal pyramid. The S–S bond length is 2.06 Å. In the twenty-ninth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the thirtieth S2- site, S2- is bonded in a distorted see-saw-like geometry to three Yb3+ and one B3+ atom. In the thirty-first S2- site, S2- is bonded in a distorted see-saw-like geometry to three Yb3+ and one B3+ atom. In the thirty-second S2- site, S2- is bonded to three Yb3+ and one S2- atom to form distorted SYb3S trigonal pyramids that share a cornercorner with one BS4 trigonal pyramid, a cornercorner with one SYb3B trigonal pyramid, and an edgeedge with one SYb3S trigonal pyramid. The S–S bond length is 2.06 Å. In the thirty-third S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the thirty-fourth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the thirty-fifth S2- site, S2- is bonded in a distorted see-saw-like geometry to three Yb3+ and one B3+ atom. In the thirty-sixth S2- site, S2- is bonded in a 3-coordinate geometry to one B3+ and two S2- atoms. In the thirty-seventh S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the thirty-eighth S2- site, S2- is bonded in a 4-coordinate geometry to three Yb3+ and one B3+ atom. In the thirty-ninth S2- site, S2- is bonded to three Yb3+ and one B3+ atom to form distorted corner-sharing SYb3B trigonal pyramids. In the fortieth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Yb3+ and one B3+ atom. In the forty-first S2- sit