DOE OSTI2020
Li7(Ga3Te5)8 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are seven inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with two equivalent LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 15–27°. There are a spread of Li–Te bond distances ranging from 3.00–3.48 Å. In the second Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.67–2.70 Å. In the third Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.68–2.71 Å. In the fourth Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.77–2.81 Å. In the fifth Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 17°. There are a spread of Li–Te bond distances ranging from 2.99–3.46 Å. In the sixth Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with three LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 15–28°. There are a spread of Li–Te bond distances ranging from 3.00–3.48 Å. In the seventh Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with two LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 17–28°. There are a spread of Li–Te bond distances ranging from 3.01–3.51 Å. There are twenty-four inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the second Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the third Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fourth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fifth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the sixth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the seventh Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.70 Å. In the eighth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the ninth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the tenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.72 Å. In the eleventh Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the twelfth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the thirteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are a spread of Ga–Te bond distances ranging from 2.65–2.71 Å. In the fourteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fifteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.62–2.71 Å. In the sixteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.63–2.70 Å. In the seventeenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.62–2.70 Å. In the eighteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.62–2.72 Å. In the nineteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.70 Å. In the twentieth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 62°. There are a spread of Ga–Te bond distances ranging from 2.63–2.70 Å. In the twenty-first Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the twenty-second Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.63–2.71 Å. In the twenty-third Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the twenty-fourth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are a spread of Ga–Te bond distances ranging from 2.65–2.71 Å. There are forty inequivalent Te+1.98- sites. In the first Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the second Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the third Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the fourth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the fifth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the sixth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the seventh Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to three Ga3+ atoms. In the eighth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to three Ga3+ atoms. In the ninth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the tenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the eleventh Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the twelfth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the thirteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the fourteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the fifteenth Te+1.98- site, Te+1.98- is bonded in a distorted rectangular see-saw-like geometry to two Li1+ and two Ga3+ atoms. In the sixteenth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the seventeenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the eighteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the nineteenth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the twentieth Te+1.98- site, Te+1.98- is bonded in a 4-coordinate geometry to two Li1+ and two Ga3+ atoms. In th