Nb6PbTe8 crystallizes in the trigonal P-3 space group. Nb(1) is bonded in a 6-coordinate geometry to two equivalent Te(2) and four equivalent Te(1) atoms. Pb(1) is bonded in a 6-coordinate geometry to six equivalent Te(1) atoms. There are two inequivalent Te sites. In the first Te site, Te(2) is bonded to six equivalent Nb(1) atoms to form distorted face-sharing TeNb6 pentagonal pyramids. In the second Te site, Te(1) is bonded in a 5-coordinate geometry to four equivalent Nb(1) and one Pb(1) atom.
Nb6PbTe8 crystallizes in the trigonal P-3 space group. Nb(1) is bonded in a 6-coordinate geometry to two equivalent Te(2) and four equivalent Te(1) atoms. Both Nb(1)-Te(2) bond lengths are 2.91 Å. There are a spread of Nb(1)-Te(1) bond distances ranging from 2.80-3.04 Å. Pb(1) is bonded in a 6-coordinate geometry to six equivalent Te(1) atoms. All Pb(1)-Te(1) bond lengths are 3.43 Å. There are two inequivalent Te sites. In the first Te site, Te(2) is bonded to six equivalent Nb(1) atoms to form distorted face-sharing TeNb6 pentagonal pyramids. In the second Te site, Te(1) is bonded in a 5-coordinate geometry to four equivalent Nb(1) and one Pb(1) atom.