Ta4Mn2Zn3O16 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(14), one O(15), one O(4), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, and edges with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the second Ta site, Ta(2) is bonded to one O(10), one O(13), one O(16), one O(2), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Zn(2)O4 tetrahedra, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the third Ta site, Ta(3) is bonded to one O(10), one O(12), one O(16), one O(2), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and edges with two equivalent Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the fourth Ta site, Ta(4) is bonded to one O(1), one O(11), one O(15), one O(4), one O(8), and one O(9) atom to form distorted TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-57°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted see-saw-like geometry to one O(12), one O(13), one O(14), and one O(16) atom. In the second Zn site, Zn(2) is bonded to one O(11), one O(13), one O(14), and one O(15) atom to form distorted ZnO4 tetrahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and corners with two equivalent Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-75°. In the third Zn site, Zn(3) is bonded to one O(11), one O(12), one O(14), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one Ta(3)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-71°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(4), and one Mn(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Mn(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(3), and one Mn(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(1), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ta(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Ta(3), one Mn(1), and one Mn(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(4), one Mn(1), and one Mn(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(3) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Ta(2) and one Ta(3) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Ta(4), one Zn(2), and one Zn(3) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Ta(3), one Zn(1), and one Zn(3) atom. In the thirteenth O site, O(13) is bonded in a trigonal non-coplanar geometry to one Ta(2), one Zn(1), and one Zn(2) atom. In the fourteenth O site, O(14) is bonded in a trigonal pyramidal geometry to one Ta(1), one Zn(1), one Zn(2), and one Zn(3) atom. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Ta(2), one Ta(3), and one Zn(1) atom.
Ta4Mn2Zn3O16 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(14), one O(15), one O(4), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, and edges with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Ta(1)-O(1) bond length is 2.00 Å. The Ta(1)-O(14) bond length is 2.01 Å. The Ta(1)-O(15) bond length is 2.09 Å. The Ta(1)-O(4) bond length is 2.02 Å. The Ta(1)-O(5) bond length is 1.96 Å. The Ta(1)-O(9) bond length is 2.01 Å. In the second Ta site, Ta(2) is bonded to one O(10), one O(13), one O(16), one O(2), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Zn(2)O4 tetrahedra, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Ta(2)-O(10) bond length is 1.94 Å. The Ta(2)-O(13) bond length is 1.91 Å. The Ta(2)-O(16) bond length is 2.18 Å. The Ta(2)-O(2) bond length is 1.99 Å. The Ta(2)-O(3) bond length is 2.17 Å. The Ta(2)-O(6) bond length is 1.92 Å. In the third Ta site, Ta(3) is bonded to one O(10), one O(12), one O(16), one O(2), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and edges with two equivalent Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. The Ta(3)-O(10) bond length is 1.98 Å. The Ta(3)-O(12) bond length is 1.92 Å. The Ta(3)-O(16) bond length is 2.02 Å. The Ta(3)-O(2) bond length is 2.06 Å. The Ta(3)-O(3) bond length is 2.05 Å. The Ta(3)-O(7) bond length is 2.04 Å. In the fourth Ta site, Ta(4) is bonded to one O(1), one O(11), one O(15), one O(4), one O(8), and one O(9) atom to form distorted TaO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-57°. The Ta(4)-O(1) bond length is 2.24 Å. The Ta(4)-O(11) bond length is 1.89 Å. The Ta(4)-O(15) bond length is 2.00 Å. The Ta(4)-O(4) bond length is 2.00 Å. The Ta(4)-O(8) bond length is 1.91 Å. The Ta(4)-O(9) bond length is 2.11 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. The Mn(1)-O(3) bond length is 1.95 Å. The Mn(1)-O(4) bond length is 2.29 Å. The Mn(1)-O(5) bond length is 2.01 Å. The Mn(1)-O(6) bond length is 2.30 Å. The Mn(1)-O(7) bond length is 1.99 Å. The Mn(1)-O(8) bond length is 1.95 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. The Mn(2)-O(1) bond length is 1.99 Å. The Mn(2)-O(2) bond length is 2.26 Å. The Mn(2)-O(5) bond length is 2.02 Å. The Mn(2)-O(6) bond length is 1.95 Å. The Mn(2)-O(7) bond length is 1.98 Å. The Mn(2)-O(8) bond length is 2.38 Å. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted see-saw-like geometry to one O(12), one O(13), one O(14), and one O(16) atom. The Zn(1)-O(12) bond length is 1.99 Å. The Zn(1)-O(13) bond length is 1.91 Å. The Zn(1)-O(14) bond length is 2.16 Å. The Zn(1)-O(16) bond length is 1.95 Å. In the second Zn site, Zn(2) is bonded to one O(11), one O(13), one O(14), and one O(15) atom to form distorted ZnO4 tetrahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and corners with two equivalent Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-75°. The Zn(2)-O(11) bond length is 2.01 Å. The Zn(2)-O(13) bond length is 2.02 Å. The Zn(2)-O(14) bond length is 2.06 Å. The Zn(2)-O(15) bond length is 2.02 Å. In the third Zn site, Zn(3) is bonded to one O(11), one O(12), one O(14), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one Ta(3)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-71°. The Zn(3)-O(11) bond length is 1.97 Å. The Zn(3)-O(12) bond length is 2.00 Å. The Zn(3)-O(14) bond length is 2.06 Å. The Zn(3)-O(9) bond length is 1.97 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(4), and one Mn(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Mn(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(3), and one Mn(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(1), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ta(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Ta(3), one Mn(1), and one Mn(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(4), one Mn(1), and one Mn(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(3) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Ta(2) and one Ta(3) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Ta(4), one Zn(2), and one Zn(3) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Ta(3), one Zn(1), and one Zn(3) atom. In the thirteenth O site, O(13) is bonded in a trigonal non-coplanar geometry to one Ta(2), one Zn(1), and one Zn(2) atom. In the fourteenth O site, O(14) is bonded in a trigonal pyramidal geometry to one Ta(1), one Zn(1), one Zn(2), and one Zn(3) atom. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Ta(2), one Ta(3), and one Zn(1) atom.