Materials Data on Cs6Dy21Te34Cl by Materials Project

Abstract

Cs6Dy21Te34Cl crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to eight Te2- and one Cl1- atom. There are a spread of Cs–Te bond distances ranging from 3.98–4.39 Å. The Cs–Cl bond length is 3.67 Å. In the second Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to eight Te2- and one Cl1- atom. There are a spread of Cs–Te bond distances ranging from 4.03–4.42 Å. The Cs–Cl bond length is 3.63 Å. There are eight inequivalent Dy3+ sites. In the first Dy3+ site, Dy3+ is bonded to six Te2- atoms to form edge-sharing DyTe6 octahedra. There are a spread of Dy–Te bond distances ranging from 3.07–3.11 Å. In the second Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedra tilt angles range from 4–5°. There are a spread of Dy–Te bond distances ranging from 2.98–3.16 Å. In the third Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Dy–Te bond distances ranging from 3.06–3.12 Å. In the fourth Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Dy–Te bond distances ranging from 3.07–3.11 Å. In the fifth Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedra tilt angles range from 3–5°. There are a spread of Dy–Te bond distances ranging from 2.96–3.22 Å. In the sixth Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are a spread of Dy–Te bond distances ranging from 3.06–3.12 Å. In the seventh Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are two shorter (3.08 Å) and four longer (3.09 Å) Dy–Te bond lengths. In the eighth Dy3+ site, Dy3+ is bonded to six Te2- atoms to form a mixture of corner and edge-sharing DyTe6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are a spread of Dy–Te bond distances ranging from 3.04–3.12 Å. There are ten inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 3-coordinate geometry to three Cs1+ and three Dy3+ atoms. In the second Te2- site, Te2- is bonded in a 3-coordinate geometry to three Cs1+ and three Dy3+ atoms. In the third Te2- site, Te2- is bonded to one Cs1+ and four Dy3+ atoms to form distorted TeCsDy4 trigonal bipyramids that share a cornercorner with one ClCs6 octahedra, corners with five TeCsDy4 trigonal bipyramids, an edgeedge with one TeDy5 square pyramid, and edges with four TeCsDy4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 51°. In the fourth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to one Cs1+ and three Dy3+ atoms. In the fifth Te2- site, Te2- is bonded to one Cs1+ and four Dy3+ atoms to form distorted TeCsDy4 trigonal bipyramids that share a cornercorner with one ClCs6 octahedra, corners with four TeCsDy4 trigonal bipyramids, and edges with five TeCsDy4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 52°. In the sixth Te2- site, Te2- is bonded to one Cs1+ and four Dy3+ atoms to form distorted TeCsDy4 trigonal bipyramids that share a cornercorner with one ClCs6 octahedra, a cornercorner with one TeDy5 square pyramid, corners with three TeCsDy4 trigonal bipyramids, an edgeedge with one TeDy5 square pyramid, and edges with five TeCsDy4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 50°. In the seventh Te2- site, Te2- is bonded in a 3-coordinate geometry to three Cs1+ and three Dy3+ atoms. In the eighth Te2- site, Te2- is bonded to one Cs1+ and four Dy3+ atoms to form distorted TeCsDy4 trigonal bipyramids that share a cornercorner with one ClCs6 octahedra, a cornercorner with one TeDy5 square pyramid, corners with five TeCsDy4 trigonal bipyramids, an edgeedge with one TeDy5 square pyramid, and edges with five TeCsDy4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 51°. In the ninth Te2- site, Te2- is bonded to one Cs1+ and four Dy3+ atoms to form distorted TeCsDy4 trigonal bipyramids that share a cornercorner with one ClCs6 octahedra, a cornercorner with one TeDy5 square pyramid, corners with four TeCsDy4 trigonal bipyramids, and edges with five TeCsDy4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 49°. In the tenth Te2- site, Te2- is bonded to five Dy3+ atoms to form TeDy5 square pyramids that share corners with six TeCsDy4 trigonal bipyramids, an edgeedge with one TeDy5 square pyramid, and edges with six TeCsDy4 trigonal bipyramids. Cl1- is bonded to six Cs1+ atoms to form ClCs6 octahedra that share corners with twenty TeCsDy4 trigonal bipyramids.