Ba2Tm2Zn8O13 is Chalcostibite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one O(8), one O(9), two equivalent O(7), and four equivalent O(1) atoms. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(8), two equivalent O(2), and two equivalent O(3) atoms to form TmO5 square pyramids that share corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(5)O4 tetrahedra, and corners with four equivalent Zn(1)O4 tetrahedra. In the second Tm site, Tm(2) is bonded to one O(7), one O(9), two equivalent O(1), and two equivalent O(4) atoms to form TmO6 octahedra that share  a cornercorner with one Zn(5)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(3)O4 tetrahedra, and corners with four equivalent Zn(2)O4 tetrahedra. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(3), one O(5), and one O(8) atom to form ZnO4 tetrahedra that share  a cornercorner with one Tm(2)O6 octahedra, corners with two equivalent Tm(1)O5 square pyramids,  a cornercorner with one Zn(3)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Zn site, Zn(2) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Tm(2)O6 octahedra,  a cornercorner with one Tm(1)O5 square pyramid,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-61°. In the third Zn site, Zn(3) is bonded to one O(6), one O(7), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with three equivalent Tm(2)O6 octahedra,  a cornercorner with one Zn(5)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the fourth Zn site, Zn(4) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. In the fifth Zn site, Zn(5) is bonded to one O(5), one O(7), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Tm(2)O6 octahedra, corners with two equivalent Tm(1)O5 square pyramids,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with four equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. In the sixth Zn site, Zn(6) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(4) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1), one Tm(2), one Zn(1), and one Zn(3) atom. In the second O site, O(2) is bonded to one Ba(2), one Tm(1), one Zn(2), and one Zn(4) atom to form distorted OBaTmZn2 tetrahedra that share  a cornercorner with one O(2)BaTmZn2 tetrahedra,  a cornercorner with one O(5)Zn4 tetrahedra,  a cornercorner with one O(6)Zn4 tetrahedra, corners with three equivalent O(4)BaTmZn2 tetrahedra, and  an edgeedge with one O(2)BaTmZn2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), one Tm(1), one Zn(1), and one Zn(5) atom. In the fourth O site, O(4) is bonded to one Ba(2), one Tm(2), one Zn(2), and one Zn(6) atom to form distorted OBaTmZn2 tetrahedra that share  a cornercorner with one O(4)BaTmZn2 tetrahedra, corners with two equivalent O(6)Zn4 tetrahedra, corners with three equivalent O(2)BaTmZn2 tetrahedra, and  an edgeedge with one O(4)BaTmZn2 tetrahedra. In the fifth O site, O(5) is bonded to one Zn(4), one Zn(5), and two equivalent Zn(1) atoms to form corner-sharing OZn4 tetrahedra. In the sixth O site, O(6) is bonded to one Zn(3), one Zn(6), and two equivalent Zn(2) atoms to form corner-sharing OZn4 tetrahedra. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1), one Tm(2), one Zn(3), and one Zn(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(1), one Tm(1), and two equivalent Zn(1) atoms. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), one Tm(2), and two equivalent Zn(2) atoms.
Ba2Tm2Zn8O13 is Chalcostibite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one O(8), one O(9), two equivalent O(7), and four equivalent O(1) atoms. The Ba(1)-O(8) bond length is 2.76 Å. The Ba(1)-O(9) bond length is 2.70 Å. Both Ba(1)-O(7) bond lengths are 3.23 Å. There are two shorter (3.08 Å) and two longer (3.35 Å) Ba(1)-O(1) bond lengths. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Ba(2)-O(2) bond lengths are 2.78 Å. Both Ba(2)-O(3) bond lengths are 3.00 Å. Both Ba(2)-O(4) bond lengths are 2.79 Å. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(8), two equivalent O(2), and two equivalent O(3) atoms to form TmO5 square pyramids that share corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(5)O4 tetrahedra, and corners with four equivalent Zn(1)O4 tetrahedra. The Tm(1)-O(8) bond length is 2.07 Å. Both Tm(1)-O(2) bond lengths are 2.26 Å. Both Tm(1)-O(3) bond lengths are 2.19 Å. In the second Tm site, Tm(2) is bonded to one O(7), one O(9), two equivalent O(1), and two equivalent O(4) atoms to form TmO6 octahedra that share  a cornercorner with one Zn(5)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(3)O4 tetrahedra, and corners with four equivalent Zn(2)O4 tetrahedra. The Tm(2)-O(7) bond length is 2.23 Å. The Tm(2)-O(9) bond length is 2.29 Å. Both Tm(2)-O(1) bond lengths are 2.20 Å. Both Tm(2)-O(4) bond lengths are 2.33 Å. There are six inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(3), one O(5), and one O(8) atom to form ZnO4 tetrahedra that share  a cornercorner with one Tm(2)O6 octahedra, corners with two equivalent Tm(1)O5 square pyramids,  a cornercorner with one Zn(3)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. The Zn(1)-O(1) bond length is 1.96 Å. The Zn(1)-O(3) bond length is 1.97 Å. The Zn(1)-O(5) bond length is 2.01 Å. The Zn(1)-O(8) bond length is 2.02 Å. In the second Zn site, Zn(2) is bonded to one O(2), one O(4), one O(6), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Tm(2)O6 octahedra,  a cornercorner with one Tm(1)O5 square pyramid,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-61°. The Zn(2)-O(2) bond length is 2.00 Å. The Zn(2)-O(4) bond length is 1.99 Å. The Zn(2)-O(6) bond length is 1.98 Å. The Zn(2)-O(9) bond length is 1.97 Å. In the third Zn site, Zn(3) is bonded to one O(6), one O(7), and two equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with three equivalent Tm(2)O6 octahedra,  a cornercorner with one Zn(5)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. The Zn(3)-O(6) bond length is 2.05 Å. The Zn(3)-O(7) bond length is 1.97 Å. Both Zn(3)-O(1) bond lengths are 1.98 Å. In the fourth Zn site, Zn(4) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. The Zn(4)-O(5) bond length is 1.94 Å. Both Zn(4)-O(2) bond lengths are 1.90 Å. In the fifth Zn site, Zn(5) is bonded to one O(5), one O(7), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Tm(2)O6 octahedra, corners with two equivalent Tm(1)O5 square pyramids,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with four equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. The Zn(5)-O(5) bond length is 2.04 Å. The Zn(5)-O(7) bond length is 1.97 Å. Both Zn(5)-O(3) bond lengths are 2.03 Å. In the sixth Zn site, Zn(6) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(4) atoms. The Zn(6)-O(6) bond length is 1.93 Å. Both Zn(6)-O(4) bond lengths are 1.90 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1), one Tm(2), one Zn(1), and one Zn(3) atom. In the second O site, O(2) is bonded to one Ba(2), one Tm(1), one Zn(2), and one Zn(4) atom to form distorted OBaTmZn2 tetrahedra that share  a cornercorner with one O(2)BaTmZn2 tetrahedra,  a cornercorner with one O(5)Zn4 tetrahedra,  a cornercorner with one O(6)Zn4 tetrahedra, corners with three equivalent O(4)BaTmZn2 tetrahedra, and  an edgeedge with one O(2)BaTmZn2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), one Tm(1), one Zn(1), and one Zn(5) atom. In the fourth O site, O(4) is bonded to one Ba(2), one Tm(2), one Zn(2), and one Zn(6) atom to form distorted OBaTmZn2 tetrahedra that share  a cornercorner with one O(4)BaTmZn2 tetrahedra, corners with two equivalent O(6)Zn4 tetrahedra, corners with three equivalent O(2)BaTmZn2 tetrahedra, and  an edgeedge with one O(4)BaTmZn2 tetrahedra. In the fifth O site, O(5) is bonded to one Zn(4), one Zn(5), and two equivalent Zn(1) atoms to form corner-sharing OZn4 tetrahedra. In the sixth O site, O(6) is bonded to one Zn(3), one Zn(6), and two equivalent Zn(2) atoms to form corner-sharing OZn4 tetrahedra. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1), one Tm(2), one Zn(3), and one Zn(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(1), one Tm(1), and two equivalent Zn(1) atoms. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), one Tm(2), and two equivalent Zn(2) atoms.