DOI: 10.17188/1266262
title: Materials Data on CeTmS3 by Materials Project

description: CeTmS3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are four inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded to seven S2- atoms to form a mixture of distorted corner, edge, and face-sharing TmS7 pentagonal bipyramids. There are a spread of Tm–S bond distances ranging from 2.71–2.94 Å. In the second Tm3+ site, Tm3+ is bonded to six S2- atoms to form a mixture of corner and edge-sharing TmS6 octahedra. The corner-sharing octahedral tilt angles are 63°. There are a spread of Tm–S bond distances ranging from 2.61–2.75 Å. In the third Tm3+ site, Tm3+ is bonded to six S2- atoms to form a mixture of corner and edge-sharing TmS6 octahedra. The corner-sharing octahedral tilt angles are 63°. There are a spread of Tm–S bond distances ranging from 2.64–2.76 Å. In the fourth Tm3+ site, Tm3+ is bonded to seven S2- atoms to form a mixture of distorted corner, edge, and face-sharing TmS7 pentagonal bipyramids. There are a spread of Tm–S bond distances ranging from 2.70–2.95 Å. There are four inequivalent Ce3+ sites. In the first Ce3+ site, Ce3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ce–S bond distances ranging from 2.86–3.10 Å. In the second Ce3+ site, Ce3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ce–S bond distances ranging from 2.88–2.95 Å. In the third Ce3+ site, Ce3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ce–S bond distances ranging from 2.82–3.30 Å. In the fourth Ce3+ site, Ce3+ is bonded in a 7-coordinate geometry to eight S2- atoms. There are a spread of Ce–S bond distances ranging from 2.87–3.48 Å. There are twelve inequivalent S2- sites. In the first S2- site, S2- is bonded to one Tm3+ and four Ce3+ atoms to form distorted SCe4Tm trigonal bipyramids that share corners with four SCe4Tm square pyramids, corners with six SCe4Tm trigonal bipyramids, edges with two SCe4Tm square pyramids, edges with three SCe4Tm trigonal bipyramids, edges with two equivalent SCe2Tm2 trigonal pyramids, and a faceface with one SCe4Tm trigonal bipyramid. In the second S2- site, S2- is bonded to two Tm3+ and two equivalent Ce3+ atoms to form SCe2Tm2 tetrahedra that share corners with six SCe4Tm square pyramids, corners with two equivalent SCe2Tm2 tetrahedra, corners with six SCe3Tm2 trigonal bipyramids, corners with two equivalent SCe2Tm2 trigonal pyramids, an edgeedge with one SCe4Tm square pyramid, and an edgeedge with one SCe4Tm trigonal bipyramid. In the third S2- site, S2- is bonded to one Tm3+ and four Ce3+ atoms to form distorted SCe4Tm square pyramids that share corners with two equivalent SCe2Tm3 square pyramids, a cornercorner with one SCe2Tm2 tetrahedra, corners with six SCe4Tm trigonal bipyramids, edges with three SCe4Tm square pyramids, edges with five SCe4Tm trigonal bipyramids, and edges with two equivalent SCe2Tm2 trigonal pyramids. In the fourth S2- site, S2- is bonded to two equivalent Tm3+ and two Ce3+ atoms to form distorted SCe2Tm2 trigonal pyramids that share corners with two equivalent SCe4Tm square pyramids, corners with two equivalent SCe2Tm2 tetrahedra, corners with six SCe3Tm2 trigonal bipyramids, corners with two equivalent SCe2Tm2 trigonal pyramids, edges with two equivalent SCe4Tm square pyramids, and edges with three SCe4Tm trigonal bipyramids. In the fifth S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Tm3+ and three Ce3+ atoms. In the sixth S2- site, S2- is bonded in a 5-coordinate geometry to four Tm3+ and one Ce3+ atom. In the seventh S2- site, S2- is bonded to one Tm3+ and four Ce3+ atoms to form distorted SCe4Tm square pyramids that share corners with two equivalent SCe2Tm2 tetrahedra, corners with eight SCe4Tm trigonal bipyramids, corners with two equivalent SCe2Tm2 trigonal pyramids, edges with two equivalent SCe4Tm square pyramids, an edgeedge with one SCe2Tm2 tetrahedra, edges with four SCe4Tm trigonal bipyramids, and a faceface with one SCe2Tm3 trigonal bipyramid. In the eighth S2- site, S2- is bonded to two equivalent Tm3+ and three equivalent Ce3+ atoms to form distorted SCe3Tm2 trigonal bipyramids that share corners with six SCe4Tm square pyramids, corners with two equivalent SCe2Tm2 tetrahedra, corners with two equivalent SCe2Tm2 trigonal pyramids, edges with four SCe4Tm square pyramids, edges with four equivalent SCe3Tm2 trigonal bipyramids, and an edgeedge with one SCe2Tm2 trigonal pyramid. In the ninth S2- site, S2- is bonded to one Tm3+ and four Ce3+ atoms to form distorted SCe4Tm trigonal bipyramids that share corners with four SCe4Tm square pyramids, corners with two equivalent SCe2Tm2 tetrahedra, corners with two equivalent SCe4Tm trigonal bipyramids, corners with two equivalent SCe2Tm2 trigonal pyramids, edges with two SCe4Tm square pyramids, an edgeedge with one SCe2Tm2 tetrahedra, edges with four SCe4Tm trigonal bipyramids, and a faceface with one SCe4Tm trigonal bipyramid. In the tenth S2- site, S2- is bonded to four Tm3+ and one Ce3+ atom to form distorted SCeTm4 trigonal bipyramids that share corners with two equivalent SCe2Tm2 tetrahedra, corners with six SCe4Tm trigonal bipyramids, edges with two equivalent SCe4Tm square pyramids, and edges with five SCe4Tm trigonal bipyramids. In the eleventh S2- site, S2- is bonded to three equivalent Tm3+ and two equivalent Ce3+ atoms to form distorted SCe2Tm3 square pyramids that share corners with two equivalent SCe4Tm square pyramids, corners with three equivalent SCe2Tm2 tetrahedra, corners with four equivalent SCe3Tm2 trigonal bipyramids, edges with five SCe2Tm3 square pyramids, and an edgeedge with one SCe3Tm2 trigonal bipyramid. In the twelfth S2- site, S2- is bonded to three equivalent Tm3+ and two equivalent Ce3+ atoms to form distorted SCe2Tm3 trigonal bipyramids that share corners with four equivalent SCe4Tm square pyramids, corners with six SCe4Tm trigonal bipyramids, corners with two equivalent SCe2Tm2 trigonal pyramids, edges with six SCe2Tm3 trigonal bipyramids, and a faceface with one SCe4Tm square pyramid.