Cr3Fe3(TeO8)2 is Hydrophilite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CrO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second Cr site, Cr(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CrO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, and edges with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Te site, Te(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form TeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(2), one Fe(2), and one Te(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cr(1) and one Fe(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to two equivalent Cr(1) and one Fe(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Cr(2) and two equivalent Fe(2) atoms. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Cr(1), one Fe(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Fe(2) and one Te(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Cr(2), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Cr(2) and two equivalent Fe(2) atoms. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Cr(1), one Fe(1), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to two equivalent Fe(2) and one Te(2) atom.
Cr3Fe3(TeO8)2 is Hydrophilite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CrO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cr(1)-O(11) bond length is 2.10 Å. The Cr(1)-O(2) bond length is 2.02 Å. The Cr(1)-O(3) bond length is 1.94 Å. The Cr(1)-O(4) bond length is 1.91 Å. The Cr(1)-O(6) bond length is 2.00 Å. The Cr(1)-O(7) bond length is 2.07 Å. In the second Cr site, Cr(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CrO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, and edges with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cr(2)-O(10) bond length is 1.89 Å. The Cr(2)-O(5) bond length is 1.87 Å. Both Cr(2)-O(1) bond lengths are 2.11 Å. Both Cr(2)-O(9) bond lengths are 1.95 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Fe(1)-O(3) bond length is 1.97 Å. The Fe(1)-O(4) bond length is 1.98 Å. Both Fe(1)-O(11) bond lengths are 2.03 Å. Both Fe(1)-O(6) bond lengths are 2.09 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Fe(2)-O(1) bond length is 2.04 Å. The Fe(2)-O(10) bond length is 1.99 Å. The Fe(2)-O(12) bond length is 2.07 Å. The Fe(2)-O(5) bond length is 1.97 Å. The Fe(2)-O(8) bond length is 2.05 Å. The Fe(2)-O(9) bond length is 2.15 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Te(1)-O(2) bond length is 2.00 Å. The Te(1)-O(8) bond length is 1.93 Å. Both Te(1)-O(1) bond lengths are 1.95 Å. Both Te(1)-O(6) bond lengths are 1.99 Å. In the second Te site, Te(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form TeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Te(2)-O(12) bond length is 1.97 Å. The Te(2)-O(7) bond length is 1.95 Å. Both Te(2)-O(11) bond lengths are 1.94 Å. Both Te(2)-O(9) bond lengths are 2.00 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(2), one Fe(2), and one Te(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cr(1) and one Fe(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to two equivalent Cr(1) and one Fe(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Cr(2) and two equivalent Fe(2) atoms. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Cr(1), one Fe(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Fe(2) and one Te(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Cr(2), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Cr(2) and two equivalent Fe(2) atoms. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Cr(1), one Fe(1), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to two equivalent Fe(2) and one Te(2) atom.