Cs2Tb6N2Te7 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 8-coordinate geometry to one Te(2), one Te(3), two equivalent Te(1), and four equivalent Te(4) atoms. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted single-bond geometry to one N(1), two equivalent Te(4), and three equivalent Te(3) atoms. In the second Tb site, Tb(2) is bonded in a distorted bent 120 degrees geometry to two equivalent N(1), one Te(1), one Te(4), and two equivalent Te(2) atoms. In the third Tb site, Tb(3) is bonded in a distorted single-bond geometry to one N(1), two equivalent Te(3), and three equivalent Te(1) atoms. N(1) is bonded to one Tb(1), one Tb(3), and two equivalent Tb(2) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(1)Cs2Tb4 octahedra, corners with two equivalent Te(2)Cs2Tb4 octahedra, corners with two equivalent N(1)Tb4 tetrahedra,  an edgeedge with one Te(2)Cs2Tb4 octahedra, and edges with two equivalent Te(1)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 6-20°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(1), one Tb(2), and three equivalent Tb(3) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(1)Tb4 tetrahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with four equivalent Te(1)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the second Te site, Te(2) is bonded to two equivalent Cs(1) and four equivalent Tb(2) atoms to form TeCs2Tb4 octahedra that share corners with four equivalent N(1)Tb4 tetrahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with four equivalent Te(1)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Cs(1), two equivalent Tb(3), and three equivalent Tb(1) atoms. In the fourth Te site, Te(4) is bonded in a 7-coordinate geometry to four equivalent Cs(1), one Tb(2), and two equivalent Tb(1) atoms.
Cs2Tb6N2Te7 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 8-coordinate geometry to one Te(2), one Te(3), two equivalent Te(1), and four equivalent Te(4) atoms. The Cs(1)-Te(2) bond length is 4.12 Å. The Cs(1)-Te(3) bond length is 4.43 Å. Both Cs(1)-Te(1) bond lengths are 3.88 Å. There are two shorter (3.92 Å) and two longer (4.03 Å) Cs(1)-Te(4) bond lengths. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted single-bond geometry to one N(1), two equivalent Te(4), and three equivalent Te(3) atoms. The Tb(1)-N(1) bond length is 2.17 Å. Both Tb(1)-Te(4) bond lengths are 3.06 Å. There is one shorter (3.23 Å) and two longer (3.27 Å) Tb(1)-Te(3) bond lengths. In the second Tb site, Tb(2) is bonded in a distorted bent 120 degrees geometry to two equivalent N(1), one Te(1), one Te(4), and two equivalent Te(2) atoms. Both Tb(2)-N(1) bond lengths are 2.41 Å. The Tb(2)-Te(1) bond length is 3.17 Å. The Tb(2)-Te(4) bond length is 3.18 Å. Both Tb(2)-Te(2) bond lengths are 3.19 Å. In the third Tb site, Tb(3) is bonded in a distorted single-bond geometry to one N(1), two equivalent Te(3), and three equivalent Te(1) atoms. The Tb(3)-N(1) bond length is 2.24 Å. Both Tb(3)-Te(3) bond lengths are 3.20 Å. There are two shorter (3.05 Å) and one longer (3.24 Å) Tb(3)-Te(1) bond length. N(1) is bonded to one Tb(1), one Tb(3), and two equivalent Tb(2) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(1)Cs2Tb4 octahedra, corners with two equivalent Te(2)Cs2Tb4 octahedra, corners with two equivalent N(1)Tb4 tetrahedra,  an edgeedge with one Te(2)Cs2Tb4 octahedra, and edges with two equivalent Te(1)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 6-20°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(1), one Tb(2), and three equivalent Tb(3) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(1)Tb4 tetrahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with four equivalent Te(1)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the second Te site, Te(2) is bonded to two equivalent Cs(1) and four equivalent Tb(2) atoms to form TeCs2Tb4 octahedra that share corners with four equivalent N(1)Tb4 tetrahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with four equivalent Te(1)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Cs(1), two equivalent Tb(3), and three equivalent Tb(1) atoms. In the fourth Te site, Te(4) is bonded in a 7-coordinate geometry to four equivalent Cs(1), one Tb(2), and two equivalent Tb(1) atoms.