DOI: 10.17188/1707514
title: Materials Data on Ni6SnTe2 by Materials Project

description: Ni6SnTe2 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. there are eight inequivalent Ni sites. In the first Ni site, Ni is bonded to eight Ni and four equivalent Sn atoms to form NiNi8Sn4 cuboctahedra that share corners with four equivalent NiNi8Sn4 cuboctahedra, corners with four equivalent TeNi8 hexagonal bipyramids, edges with eight equivalent NiNi8Sn2Te2 cuboctahedra, faces with four equivalent SnNi12 cuboctahedra, faces with eight NiNi8Sn4 cuboctahedra, and a faceface with one TeNi8 hexagonal bipyramid. There are four shorter (2.63 Å) and four longer (2.64 Å) Ni–Ni bond lengths. All Ni–Sn bond lengths are 2.68 Å. In the second Ni site, Ni is bonded to eight Ni, two equivalent Sn, and two equivalent Te atoms to form distorted NiNi8Sn2Te2 cuboctahedra that share corners with four equivalent NiNi8Sn2Te2 cuboctahedra, edges with four equivalent NiNi8Sn4 cuboctahedra, edges with four equivalent SnNi12 cuboctahedra, edges with four equivalent TeNi8 hexagonal bipyramids, faces with two equivalent SnNi12 cuboctahedra, faces with ten NiNi8Sn4 cuboctahedra, and faces with two equivalent TeNi8 hexagonal bipyramids. There are two shorter (2.64 Å) and six longer (2.68 Å) Ni–Ni bond lengths. Both Ni–Sn bond lengths are 2.63 Å. Both Ni–Te bond lengths are 2.58 Å. In the third Ni site, Ni is bonded to eight Ni, two equivalent Sn, and two equivalent Te atoms to form distorted NiNi8Sn2Te2 cuboctahedra that share corners with four equivalent NiNi8Sn2Te2 cuboctahedra, edges with four equivalent NiNi8Sn4 cuboctahedra, edges with four equivalent SnNi12 cuboctahedra, edges with four equivalent TeNi8 hexagonal bipyramids, faces with two equivalent SnNi12 cuboctahedra, faces with ten NiNi8Sn4 cuboctahedra, and faces with two equivalent TeNi8 hexagonal bipyramids. There are two shorter (2.64 Å) and two longer (2.68 Å) Ni–Ni bond lengths. Both Ni–Sn bond lengths are 2.63 Å. Both Ni–Te bond lengths are 2.58 Å. In the fourth Ni site, Ni is bonded in a 10-coordinate geometry to six Ni, two equivalent Sn, and two equivalent Te atoms. All Ni–Ni bond lengths are 2.68 Å. Both Ni–Sn bond lengths are 2.64 Å. Both Ni–Te bond lengths are 2.50 Å. In the fifth Ni site, Ni is bonded in a 5-coordinate geometry to four Ni and five Te atoms. There are one shorter (2.51 Å) and four longer (2.69 Å) Ni–Te bond lengths. In the sixth Ni site, Ni is bonded to eight Ni, two equivalent Sn, and two equivalent Te atoms to form distorted NiNi8Sn2Te2 cuboctahedra that share corners with four equivalent NiNi8Sn2Te2 cuboctahedra, edges with four equivalent NiNi8Sn4 cuboctahedra, edges with four equivalent SnNi12 cuboctahedra, edges with four equivalent TeNi8 hexagonal bipyramids, faces with two equivalent SnNi12 cuboctahedra, faces with ten NiNi8Sn4 cuboctahedra, and faces with two equivalent TeNi8 hexagonal bipyramids. All Ni–Ni bond lengths are 2.68 Å. Both Ni–Sn bond lengths are 2.63 Å. Both Ni–Te bond lengths are 2.58 Å. In the seventh Ni site, Ni is bonded in a 10-coordinate geometry to six Ni, two equivalent Sn, and two equivalent Te atoms. There are two shorter (2.63 Å) and four longer (2.68 Å) Ni–Ni bond lengths. Both Ni–Sn bond lengths are 2.64 Å. Both Ni–Te bond lengths are 2.50 Å. In the eighth Ni site, Ni is bonded in a 10-coordinate geometry to six Ni, two equivalent Sn, and two equivalent Te atoms. Both Ni–Ni bond lengths are 2.63 Å. Both Ni–Sn bond lengths are 2.64 Å. Both Ni–Te bond lengths are 2.50 Å. Sn is bonded to twelve Ni atoms to form SnNi12 cuboctahedra that share corners with four equivalent SnNi12 cuboctahedra, edges with eight equivalent NiNi8Sn2Te2 cuboctahedra, edges with four equivalent TeNi8 hexagonal bipyramids, faces with four equivalent SnNi12 cuboctahedra, and faces with eight NiNi8Sn4 cuboctahedra. There are two inequivalent Te sites. In the first Te site, Te is bonded to eight Ni atoms to form distorted TeNi8 hexagonal bipyramids that share corners with four equivalent NiNi8Sn4 cuboctahedra, corners with four equivalent TeNi8 hexagonal bipyramids, edges with four equivalent SnNi12 cuboctahedra, edges with eight NiNi8Sn2Te2 cuboctahedra, faces with five NiNi8Sn4 cuboctahedra, and faces with four equivalent TeNi8 hexagonal bipyramids. In the second Te site, Te is bonded in a 5-coordinate geometry to five Ni atoms.