Materials Data on Yb3(Sb7Te12)2 by Materials Project

Abstract

Yb3(Sb7Te12)2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent Yb3+ sites. In the first Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to seven Te2- atoms. There are a spread of Yb–Te bond distances ranging from 3.14–3.73 Å. In the second Yb3+ site, Yb3+ is bonded in a 5-coordinate geometry to five Te2- atoms. There are a spread of Yb–Te bond distances ranging from 3.09–3.38 Å. In the third Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to seven Te2- atoms. There are a spread of Yb–Te bond distances ranging from 3.18–3.64 Å. There are fourteen inequivalent Sb+2.79+ sites. In the first Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with four SbTe6 octahedra, edges with five SbTe6 octahedra, and an edgeedge with one SbTe5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 40–74°. There are a spread of Sb–Te bond distances ranging from 2.90–3.54 Å. In the second Sb+2.79+ site, Sb+2.79+ is bonded in a rectangular see-saw-like geometry to four Te2- atoms. There are a spread of Sb–Te bond distances ranging from 2.84–3.12 Å. In the third Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with three SbTe6 octahedra, corners with two equivalent SbTe6 pentagonal pyramids, a cornercorner with one SbTe5 square pyramid, edges with three SbTe6 octahedra, an edgeedge with one SbTe5 square pyramid, and a faceface with one SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 44–76°. There are a spread of Sb–Te bond distances ranging from 2.87–3.52 Å. In the fourth Sb+2.79+ site, Sb+2.79+ is bonded to five Te2- atoms to form a mixture of corner and edge-sharing SbTe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 42–59°. There are a spread of Sb–Te bond distances ranging from 2.91–3.20 Å. In the fifth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form SbTe6 octahedra that share corners with four SbTe6 octahedra, edges with five SbTe6 octahedra, and an edgeedge with one SbTe5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 36–71°. There are a spread of Sb–Te bond distances ranging from 2.95–3.32 Å. In the sixth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with six SbTe6 octahedra, corners with two equivalent SbTe5 trigonal bipyramids, an edgeedge with one SbTe6 octahedra, and an edgeedge with one SbTe5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 36–74°. There are a spread of Sb–Te bond distances ranging from 2.88–3.49 Å. In the seventh Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share a cornercorner with one SbTe6 octahedra, corners with two equivalent SbTe5 trigonal bipyramids, an edgeedge with one SbTe6 octahedra, and an edgeedge with one SbTe6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 67°. There are a spread of Sb–Te bond distances ranging from 2.86–3.41 Å. In the eighth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with seven SbTe6 octahedra, corners with three equivalent SbTe6 pentagonal pyramids, a cornercorner with one SbTe5 square pyramid, an edgeedge with one SbTe5 square pyramid, and a faceface with one SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–70°. There are a spread of Sb–Te bond distances ranging from 2.95–3.46 Å. In the ninth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with three SbTe6 octahedra, edges with five SbTe6 octahedra, an edgeedge with one SbTe5 square pyramid, and a faceface with one SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–57°. There are a spread of Sb–Te bond distances ranging from 2.95–3.46 Å. In the tenth Sb+2.79+ site, Sb+2.79+ is bonded to five Te2- atoms to form a mixture of corner and edge-sharing SbTe5 square pyramids. The corner-sharing octahedra tilt angles range from 41–89°. There are a spread of Sb–Te bond distances ranging from 2.89–3.29 Å. In the eleventh Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form SbTe6 octahedra that share corners with eleven SbTe6 octahedra, corners with two equivalent SbTe5 square pyramids, and faces with two SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 37–76°. There are a spread of Sb–Te bond distances ranging from 2.94–3.43 Å. In the twelfth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form SbTe6 octahedra that share corners with two equivalent SbTe6 octahedra, edges with five SbTe6 octahedra, an edgeedge with one SbTe5 trigonal bipyramid, and a faceface with one SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 41–53°. There are a spread of Sb–Te bond distances ranging from 2.96–3.36 Å. In the thirteenth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form SbTe6 pentagonal pyramids that share corners with five SbTe6 octahedra, a cornercorner with one SbTe5 square pyramid, an edgeedge with one SbTe6 octahedra, and a faceface with one SbTe6 octahedra. The corner-sharing octahedra tilt angles range from 34–60°. There are a spread of Sb–Te bond distances ranging from 3.06–3.23 Å. In the fourteenth Sb+2.79+ site, Sb+2.79+ is bonded to six Te2- atoms to form distorted SbTe6 octahedra that share corners with five SbTe6 octahedra, a cornercorner with one SbTe5 square pyramid, edges with three SbTe6 octahedra, an edgeedge with one SbTe5 square pyramid, and a faceface with one SbTe6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 34–70°. There are a spread of Sb–Te bond distances ranging from 2.95–3.48 Å. There are twenty-four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 3-coordinate geometry to three Sb+2.79+ atoms. In the second Te2- site, Te2- is bonded in a distorted trigonal pyramidal geometry to two Yb3+ and two Sb+2.79+ atoms. In the third Te2- site, Te2- is bonded in a 4-coordinate geometry to four Sb+2.79+ atoms. In the fourth Te2- site, Te2- is bonded in a 1-coordinate geometry to one Yb3+ and three Sb+2.79+ atoms. In the fifth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Sb+2.79+ atoms. In the sixth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Sb+2.79+ atoms. In the seventh Te2- site, Te2- is bonded in a 4-coordinate geometry to four Sb+2.79+ atoms. In the eighth Te2- site, Te2- is bonded in a 5-coordinate geometry to three Yb3+ and two Sb+2.79+ atoms. In the ninth Te2- site, Te2- is bonded in a 5-coordinate geometry to two Yb3+ and three Sb+2.79+ atoms. In the tenth Te2- site, Te2- is bonded in a 3-coordinate geometry to four Sb+2.79+ atoms. In the eleventh Te2- site, Te2- is bonded in a 5-coordinate geometry to one Yb3+ and four Sb+2.79+ atoms. In the twelfth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Sb+2.79+ atoms. In the thirteenth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to four Sb+2.79+ atoms. In the fourteenth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to four Sb+2.79+ atoms. In the fifteenth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Sb+2.79+ atoms. In the sixteenth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to one Yb3+ and three Sb+2.79+ atoms. In the seventeenth Te2- site, Te2- is bonded in a 5-coordinate geometry to one Yb3+ and four Sb+2.79+ atoms. In the eighteenth Te2- site, Te2- is bonded in a 4-coordinate geometry to two Yb3+ and two Sb+2.79+ atoms. In the nineteenth Te2- site, Te2- is bonded in a 4-coordinate geometry to two Yb3+ and two Sb+2.79+ atoms. In the twentieth Te2- site, Te2- is bonded in a 1-coordinate geometry to one Yb3+ and three Sb+2.79+ atoms. In the twenty-first Te2- site, Te2- is bonded in a 5-coordinate geometry to five Sb+2.79+ atoms. In the twenty-second Te2- site, Te2- is bonded in a 3-coordinate geometry to three Sb+2.79+ atoms. In the twenty-third Te2- site, Te2- is bonded in a 4-coordinate geometry to two Yb3+ and two Sb+2.79+ atoms. In the twenty-fourth Te2- site, Te2- is bonded in a 1-coordinate geometry to one Yb3+ and four Sb+2.79+ atoms.