Cr10Sb3Te7 is Caswellsilverite-like structured and crystallizes in the monoclinic C2 space group. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one Sb(1), one Te(3), two equivalent Te(1), and two equivalent Te(2) atoms to form CrSbTe5 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(3)Sb2Te4 octahedra, corners with three equivalent Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(3)Sb2Te4 octahedra,  an edgeedge with one Cr(4)Sb2Te4 octahedra, edges with two equivalent Cr(2)Sb2Te4 octahedra, edges with two equivalent Cr(5)Sb2Te4 octahedra,  a faceface with one Cr(2)Sb2Te4 octahedra, and  a faceface with one Cr(1)SbTe5 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Cr site, Cr(2) is bonded to one Sb(1), one Sb(2), one Te(2), one Te(3), and two equivalent Te(1) atoms to form CrSb2Te4 octahedra that share corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(2)Sb2Te4 octahedra, corners with three equivalent Cr(4)Sb2Te4 octahedra,  an edgeedge with one Cr(4)Sb2Te4 octahedra,  an edgeedge with one Cr(5)Sb2Te4 octahedra, edges with two equivalent Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(1)SbTe5 octahedra,  a faceface with one Cr(5)Sb2Te4 octahedra, and  a faceface with one Cr(1)SbTe5 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the third Cr site, Cr(3) is bonded to two equivalent Sb(2), one Te(1), one Te(2), one Te(3), and one Te(4) atom to form CrSb2Te4 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with three equivalent Cr(3)Sb2Te4 octahedra, corners with three equivalent Cr(1)SbTe5 octahedra,  an edgeedge with one Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(1)SbTe5 octahedra, edges with two equivalent Cr(2)Sb2Te4 octahedra, edges with two equivalent Cr(4)Sb2Te4 octahedra,  a faceface with one Cr(4)Sb2Te4 octahedra, and  a faceface with one Cr(5)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the fourth Cr site, Cr(4) is bonded to two equivalent Sb(2), one Te(2), one Te(4), and two equivalent Te(3) atoms to form CrSb2Te4 octahedra that share corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(2)Sb2Te4 octahedra, corners with three equivalent Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(2)Sb2Te4 octahedra,  an edgeedge with one Cr(1)SbTe5 octahedra, edges with two equivalent Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(5)Sb2Te4 octahedra,  a faceface with one Cr(3)Sb2Te4 octahedra, and  a faceface with one Cr(4)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the fifth Cr site, Cr(5) is bonded to one Sb(1), one Sb(2), one Te(1), one Te(2), one Te(3), and one Te(4) atom to form CrSb2Te4 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with three equivalent Cr(4)Sb2Te4 octahedra, corners with three equivalent Cr(1)SbTe5 octahedra,  an edgeedge with one Cr(2)Sb2Te4 octahedra,  an edgeedge with one Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(4)Sb2Te4 octahedra, edges with two equivalent Cr(1)SbTe5 octahedra,  a faceface with one Cr(2)Sb2Te4 octahedra, and  a faceface with one Cr(3)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to two equivalent Cr(1), two equivalent Cr(2), and two equivalent Cr(5) atoms. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one Cr(2), one Cr(5), two equivalent Cr(3), and two equivalent Cr(4) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Cr(3), one Cr(5), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Cr(2), one Cr(3), one Cr(4), one Cr(5), and two equivalent Cr(1) atoms. In the third Te site, Te(3) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), one Cr(3), one Cr(5), and two equivalent Cr(4) atoms. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to two equivalent Cr(3), two equivalent Cr(4), and two equivalent Cr(5) atoms.
Cr10Sb3Te7 is Caswellsilverite-like structured and crystallizes in the monoclinic C2 space group. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one Sb(1), one Te(3), two equivalent Te(1), and two equivalent Te(2) atoms to form CrSbTe5 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(3)Sb2Te4 octahedra, corners with three equivalent Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(3)Sb2Te4 octahedra,  an edgeedge with one Cr(4)Sb2Te4 octahedra, edges with two equivalent Cr(2)Sb2Te4 octahedra, edges with two equivalent Cr(5)Sb2Te4 octahedra,  a faceface with one Cr(2)Sb2Te4 octahedra, and  a faceface with one Cr(1)SbTe5 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Cr(1)-Sb(1) bond length is 2.81 Å. The Cr(1)-Te(3) bond length is 2.83 Å. There is one shorter (2.82 Å) and one longer (2.84 Å) Cr(1)-Te(1) bond length. There is one shorter (2.82 Å) and one longer (2.83 Å) Cr(1)-Te(2) bond length. In the second Cr site, Cr(2) is bonded to one Sb(1), one Sb(2), one Te(2), one Te(3), and two equivalent Te(1) atoms to form CrSb2Te4 octahedra that share corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(2)Sb2Te4 octahedra, corners with three equivalent Cr(4)Sb2Te4 octahedra,  an edgeedge with one Cr(4)Sb2Te4 octahedra,  an edgeedge with one Cr(5)Sb2Te4 octahedra, edges with two equivalent Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(1)SbTe5 octahedra,  a faceface with one Cr(5)Sb2Te4 octahedra, and  a faceface with one Cr(1)SbTe5 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Cr(2)-Sb(1) bond length is 2.80 Å. The Cr(2)-Sb(2) bond length is 2.80 Å. The Cr(2)-Te(2) bond length is 2.82 Å. The Cr(2)-Te(3) bond length is 2.85 Å. There is one shorter (2.82 Å) and one longer (2.85 Å) Cr(2)-Te(1) bond length. In the third Cr site, Cr(3) is bonded to two equivalent Sb(2), one Te(1), one Te(2), one Te(3), and one Te(4) atom to form CrSb2Te4 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with three equivalent Cr(3)Sb2Te4 octahedra, corners with three equivalent Cr(1)SbTe5 octahedra,  an edgeedge with one Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(1)SbTe5 octahedra, edges with two equivalent Cr(2)Sb2Te4 octahedra, edges with two equivalent Cr(4)Sb2Te4 octahedra,  a faceface with one Cr(4)Sb2Te4 octahedra, and  a faceface with one Cr(5)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There is one shorter (2.80 Å) and one longer (2.81 Å) Cr(3)-Sb(2) bond length. The Cr(3)-Te(1) bond length is 2.84 Å. The Cr(3)-Te(2) bond length is 2.82 Å. The Cr(3)-Te(3) bond length is 2.84 Å. The Cr(3)-Te(4) bond length is 2.82 Å. In the fourth Cr site, Cr(4) is bonded to two equivalent Sb(2), one Te(2), one Te(4), and two equivalent Te(3) atoms to form CrSb2Te4 octahedra that share corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(4)Sb2Te4 octahedra, corners with two equivalent Cr(1)SbTe5 octahedra, corners with three equivalent Cr(2)Sb2Te4 octahedra, corners with three equivalent Cr(5)Sb2Te4 octahedra,  an edgeedge with one Cr(2)Sb2Te4 octahedra,  an edgeedge with one Cr(1)SbTe5 octahedra, edges with two equivalent Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(5)Sb2Te4 octahedra,  a faceface with one Cr(3)Sb2Te4 octahedra, and  a faceface with one Cr(4)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Both Cr(4)-Sb(2) bond lengths are 2.80 Å. The Cr(4)-Te(2) bond length is 2.82 Å. The Cr(4)-Te(4) bond length is 2.85 Å. There is one shorter (2.82 Å) and one longer (2.84 Å) Cr(4)-Te(3) bond length. In the fifth Cr site, Cr(5) is bonded to one Sb(1), one Sb(2), one Te(1), one Te(2), one Te(3), and one Te(4) atom to form CrSb2Te4 octahedra that share corners with two equivalent Cr(2)Sb2Te4 octahedra, corners with two equivalent Cr(3)Sb2Te4 octahedra, corners with two equivalent Cr(5)Sb2Te4 octahedra, corners with three equivalent Cr(4)Sb2Te4 octahedra, corners with three equivalent Cr(1)SbTe5 octahedra,  an edgeedge with one Cr(2)Sb2Te4 octahedra,  an edgeedge with one Cr(3)Sb2Te4 octahedra, edges with two equivalent Cr(4)Sb2Te4 octahedra, edges with two equivalent Cr(1)SbTe5 octahedra,  a faceface with one Cr(2)Sb2Te4 octahedra, and  a faceface with one Cr(3)Sb2Te4 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Cr(5)-Sb(1) bond length is 2.81 Å. The Cr(5)-Sb(2) bond length is 2.80 Å. The Cr(5)-Te(1) bond length is 2.85 Å. The Cr(5)-Te(2) bond length is 2.82 Å. The Cr(5)-Te(3) bond length is 2.82 Å. The Cr(5)-Te(4) bond length is 2.84 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to two equivalent Cr(1), two equivalent Cr(2), and two equivalent Cr(5) atoms. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one Cr(2), one Cr(5), two equivalent Cr(3), and two equivalent Cr(4) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Cr(3), one Cr(5), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Cr(2), one Cr(3), one Cr(4), one Cr(5), and two equivalent Cr(1) atoms. In the third Te site, Te(3) is bonded in a 6-coordinate geometry to one Cr(1), one Cr(2), one Cr(3), one Cr(5), and two equivalent Cr(4) atoms. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to two equivalent Cr(3), two equivalent Cr(4), and two equivalent Cr(5) atoms.