Ag8GeTe6 crystallizes in the triclinic P1 space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 3-coordinate geometry to one Ag(2), one Ag(4), one Ag(6), one Te(1), one Te(3), and one Te(5) atom. In the second Ag site, Ag(2) is bonded in a 7-coordinate geometry to one Ag(1), one Ag(4), one Ag(5), one Ag(6), one Te(1), one Te(3), and one Te(4) atom. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one Ag(4), one Ag(6), one Te(1), one Te(2), one Te(4), and one Te(5) atom. In the fourth Ag site, Ag(4) is bonded in a 9-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(7), one Ag(8), one Te(1), one Te(2), one Te(4), and one Te(5) atom. In the fifth Ag site, Ag(5) is bonded in a 6-coordinate geometry to one Ag(2), one Ag(8), one Te(1), one Te(2), one Te(3), and one Te(6) atom. In the sixth Ag site, Ag(6) is bonded in a 7-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Te(1), one Te(2), one Te(4), and one Te(5) atom. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one Ag(4), one Te(1), one Te(2), one Te(3), and one Te(5) atom. In the eighth Ag site, Ag(8) is bonded in a 6-coordinate geometry to one Ag(4), one Ag(5), one Te(1), one Te(2), one Te(3), and one Te(4) atom. Ge(1) is bonded in a tetrahedral geometry to one Te(3), one Te(4), one Te(5), and one Te(6) atom. There are six inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), one Ag(6), one Ag(7), and one Ag(8) atom. In the second Te site, Te(2) is bonded in a distorted hexagonal planar geometry to one Ag(3), one Ag(4), one Ag(5), one Ag(6), one Ag(7), and one Ag(8) atom. In the third Te site, Te(3) is bonded to one Ag(1), one Ag(2), one Ag(5), one Ag(7), one Ag(8), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing TeAg5Ge pentagonal pyramids. In the fourth Te site, Te(4) is bonded to one Ag(2), one Ag(3), one Ag(4), one Ag(6), one Ag(8), and one Ge(1) atom to form a mixture of distorted edge, corner, and face-sharing TeAg5Ge pentagonal pyramids. In the fifth Te site, Te(5) is bonded to one Ag(1), one Ag(3), one Ag(4), one Ag(6), one Ag(7), and one Ge(1) atom to form a mixture of distorted edge, corner, and face-sharing TeAg5Ge pentagonal pyramids. In the sixth Te site, Te(6) is bonded in an L-shaped geometry to one Ag(5) and one Ge(1) atom.
Ag8GeTe6 crystallizes in the triclinic P1 space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 3-coordinate geometry to one Ag(2), one Ag(4), one Ag(6), one Te(1), one Te(3), and one Te(5) atom. The Ag(1)-Ag(2) bond length is 2.96 Å. The Ag(1)-Ag(4) bond length is 2.91 Å. The Ag(1)-Ag(6) bond length is 3.24 Å. The Ag(1)-Te(1) bond length is 2.83 Å. The Ag(1)-Te(3) bond length is 2.91 Å. The Ag(1)-Te(5) bond length is 2.87 Å. In the second Ag site, Ag(2) is bonded in a 7-coordinate geometry to one Ag(1), one Ag(4), one Ag(5), one Ag(6), one Te(1), one Te(3), and one Te(4) atom. The Ag(2)-Ag(4) bond length is 2.86 Å. The Ag(2)-Ag(5) bond length is 3.00 Å. The Ag(2)-Ag(6) bond length is 3.01 Å. The Ag(2)-Te(1) bond length is 2.85 Å. The Ag(2)-Te(3) bond length is 3.03 Å. The Ag(2)-Te(4) bond length is 2.84 Å. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one Ag(4), one Ag(6), one Te(1), one Te(2), one Te(4), and one Te(5) atom. The Ag(3)-Ag(4) bond length is 2.87 Å. The Ag(3)-Ag(6) bond length is 2.90 Å. The Ag(3)-Te(1) bond length is 2.83 Å. The Ag(3)-Te(2) bond length is 2.82 Å. The Ag(3)-Te(4) bond length is 3.07 Å. The Ag(3)-Te(5) bond length is 3.07 Å. In the fourth Ag site, Ag(4) is bonded in a 9-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(7), one Ag(8), one Te(1), one Te(2), one Te(4), and one Te(5) atom. The Ag(4)-Ag(7) bond length is 3.06 Å. The Ag(4)-Ag(8) bond length is 2.94 Å. The Ag(4)-Te(1) bond length is 2.99 Å. The Ag(4)-Te(2) bond length is 2.82 Å. The Ag(4)-Te(4) bond length is 3.09 Å. The Ag(4)-Te(5) bond length is 3.12 Å. In the fifth Ag site, Ag(5) is bonded in a 6-coordinate geometry to one Ag(2), one Ag(8), one Te(1), one Te(2), one Te(3), and one Te(6) atom. The Ag(5)-Ag(8) bond length is 2.92 Å. The Ag(5)-Te(1) bond length is 3.22 Å. The Ag(5)-Te(2) bond length is 2.88 Å. The Ag(5)-Te(3) bond length is 2.89 Å. The Ag(5)-Te(6) bond length is 2.74 Å. In the sixth Ag site, Ag(6) is bonded in a 7-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Te(1), one Te(2), one Te(4), and one Te(5) atom. The Ag(6)-Te(1) bond length is 3.25 Å. The Ag(6)-Te(2) bond length is 2.92 Å. The Ag(6)-Te(4) bond length is 2.93 Å. The Ag(6)-Te(5) bond length is 2.88 Å. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one Ag(4), one Te(1), one Te(2), one Te(3), and one Te(5) atom. The Ag(7)-Te(1) bond length is 2.98 Å. The Ag(7)-Te(2) bond length is 2.84 Å. The Ag(7)-Te(3) bond length is 2.91 Å. The Ag(7)-Te(5) bond length is 2.94 Å. In the eighth Ag site, Ag(8) is bonded in a 6-coordinate geometry to one Ag(4), one Ag(5), one Te(1), one Te(2), one Te(3), and one Te(4) atom. The Ag(8)-Te(1) bond length is 2.99 Å. The Ag(8)-Te(2) bond length is 2.92 Å. The Ag(8)-Te(3) bond length is 2.85 Å. The Ag(8)-Te(4) bond length is 2.95 Å. Ge(1) is bonded in a tetrahedral geometry to one Te(3), one Te(4), one Te(5), and one Te(6) atom. The Ge(1)-Te(3) bond length is 2.65 Å. The Ge(1)-Te(4) bond length is 2.65 Å. The Ge(1)-Te(5) bond length is 2.67 Å. The Ge(1)-Te(6) bond length is 2.54 Å. There are six inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), one Ag(6), one Ag(7), and one Ag(8) atom. In the second Te site, Te(2) is bonded in a distorted hexagonal planar geometry to one Ag(3), one Ag(4), one Ag(5), one Ag(6), one Ag(7), and one Ag(8) atom. In the third Te site, Te(3) is bonded to one Ag(1), one Ag(2), one Ag(5), one Ag(7), one Ag(8), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing TeAg5Ge pentagonal pyramids. In the fourth Te site, Te(4) is bonded to one Ag(2), one Ag(3), one Ag(4), one Ag(6), one Ag(8), and one Ge(1) atom to form a mixture of distorted edge, corner, and face-sharing TeAg5Ge pentagonal pyramids. In the fifth Te site, Te(5) is bonded to one Ag(1), one Ag(3), one Ag(4), one Ag(6), one Ag(7), and one Ge(1) atom to form a mixture of distorted edge, corner, and face-sharing TeAg5Ge pentagonal pyramids. In the sixth Te site, Te(6) is bonded in an L-shaped geometry to one Ag(5) and one Ge(1) atom.