Ta2FeZn2O8 crystallizes in the triclinic P1 space group. There are eight inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(17), one O(2), one O(21), one O(31), one O(7), and one O(9) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Ta(7)O6 octahedra, and  an edgeedge with one Ta(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the second Ta site, Ta(2) is bonded to one O(1), one O(10), one O(18), one O(22), one O(32), and one O(8) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(7)O6 octahedra, and  an edgeedge with one Ta(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the third Ta site, Ta(3) is bonded to one O(11), one O(20), one O(23), one O(29), one O(3), and one O(5) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(5)O6 octahedra, and  an edgeedge with one Ta(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(19), one O(24), one O(30), one O(4), and one O(6) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Ta(5)O6 octahedra, and  an edgeedge with one Ta(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the fifth Ta site, Ta(5) is bonded to one O(13), one O(19), one O(23), one O(27), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Ta(3)O6 octahedra, and  an edgeedge with one Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the sixth Ta site, Ta(6) is bonded to one O(14), one O(20), one O(24), one O(28), one O(4), and one O(5) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Ta(3)O6 octahedra, and  an edgeedge with one Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. In the seventh Ta site, Ta(7) is bonded to one O(1), one O(15), one O(17), one O(22), one O(25), and one O(7) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. In the eighth Ta site, Ta(8) is bonded to one O(16), one O(18), one O(2), one O(21), one O(26), and one O(8) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(13), one O(15), one O(5), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Ta(5)O6 octahedra,  a cornercorner with one Ta(6)O6 octahedra,  a cornercorner with one Ta(7)O6 octahedra,  a cornercorner with one Ta(8)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(13), one O(16), one O(2), and one O(3) atom to form FeO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(5)O6 octahedra, corners with two equivalent Ta(8)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the third Fe site, Fe(3) is bonded to one O(12), one O(14), one O(16), one O(6), one O(7), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one Ta(5)O6 octahedra,  a cornercorner with one Ta(6)O6 octahedra,  a cornercorner with one Ta(7)O6 octahedra,  a cornercorner with one Ta(8)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(14), one O(15), one O(4), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(6)O6 octahedra, corners with two equivalent Ta(7)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. There are eight inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted see-saw-like geometry to one O(23), one O(28), one O(29), and one O(31) atom. In the second Zn site, Zn(2) is bonded in a distorted see-saw-like geometry to one O(24), one O(27), one O(30), and one O(32) atom. In the third Zn site, Zn(3) is bonded in a distorted see-saw-like geometry to one O(21), one O(25), one O(29), and one O(31) atom. In the fourth Zn site, Zn(4) is bonded in a distorted see-saw-like geometry to one O(22), one O(26), one O(30), and one O(32) atom. In the fifth Zn site, Zn(5) is bonded in a distorted see-saw-like geometry to one O(17), one O(25), one O(27), and one O(32) atom. In the sixth Zn site, Zn(6) is bonded in a distorted see-saw-like geometry to one O(18), one O(26), one O(28), and one O(31) atom. In the seventh Zn site, Zn(7) is bonded in a distorted see-saw-like geometry to one O(19), one O(25), one O(27), and one O(29) atom. In the eighth Zn site, Zn(8) is bonded in a distorted see-saw-like geometry to one O(20), one O(26), one O(28), and one O(30) atom. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ta(2), one Ta(7), and one Fe(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ta(1), one Ta(8), and one Fe(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ta(3), one Ta(5), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(4), one Ta(6), and one Fe(4) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(3), one Ta(6), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ta(4), one Ta(5), and one Fe(3) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Ta(1), one Ta(7), and one Fe(3) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ta(2), one Ta(8), and one Fe(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Ta(1), one Fe(3), and one Fe(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Ta(2), one Fe(1), and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ta(3), one Fe(1), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ta(4), one Fe(2), and one Fe(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ta(5), one Fe(1), and one Fe(2) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ta(6), one Fe(3), and one Fe(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ta(7), one Fe(1), and one Fe(4) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Ta(8), one Fe(2), and one Fe(3) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(7), and one Zn(5) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(8), and one Zn(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Ta(4), one Ta(5), and one Zn(7) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Ta(3), one Ta(6), and one Zn(8) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(8), and one Zn(3) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(7), and one Zn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Ta(3), one Ta(5), and one Zn(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Ta(4), one Ta(6), and one Zn(2) atom. In the twenty-fifth O site, O(25) is bonded to one Ta(7), one Zn(3), one Zn(5), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-sixth O site, O(26) is bonded to one Ta(8), one Zn(4), one Zn(6), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-seventh O site, O(27) is bonded to one Ta(5), one Zn(2), one Zn(5), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-eighth O site, O(28) is bonded to one Ta(6), one Zn(1), one Zn(6), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-ninth O site, O(29) is bonded to one Ta(3), one Zn(1), one Zn(3), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirtieth O site, O(30) is bonded to one Ta(4), one Zn(2), one Zn(4), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirty-first O site, O(31) is bonded to one Ta(1), one Zn(1), one Zn(3), and one Zn(6) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirty-second O site, O(32) is bonded to one Ta(2), one Zn(2), one Zn(4), and one Zn(5) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids.
Ta2FeZn2O8 crystallizes in the triclinic P1 space group. There are eight inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(17), one O(2), one O(21), one O(31), one O(7), and one O(9) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Ta(7)O6 octahedra, and  an edgeedge with one Ta(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Ta(1)-O(17) bond length is 2.02 Å. The Ta(1)-O(2) bond length is 2.01 Å. The Ta(1)-O(21) bond length is 2.23 Å. The Ta(1)-O(31) bond length is 2.03 Å. The Ta(1)-O(7) bond length is 2.04 Å. The Ta(1)-O(9) bond length is 1.84 Å. In the second Ta site, Ta(2) is bonded to one O(1), one O(10), one O(18), one O(22), one O(32), and one O(8) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(7)O6 octahedra, and  an edgeedge with one Ta(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Ta(2)-O(1) bond length is 2.01 Å. The Ta(2)-O(10) bond length is 1.84 Å. The Ta(2)-O(18) bond length is 2.02 Å. The Ta(2)-O(22) bond length is 2.23 Å. The Ta(2)-O(32) bond length is 2.03 Å. The Ta(2)-O(8) bond length is 2.04 Å. In the third Ta site, Ta(3) is bonded to one O(11), one O(20), one O(23), one O(29), one O(3), and one O(5) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(5)O6 octahedra, and  an edgeedge with one Ta(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Ta(3)-O(11) bond length is 1.85 Å. The Ta(3)-O(20) bond length is 2.03 Å. The Ta(3)-O(23) bond length is 2.24 Å. The Ta(3)-O(29) bond length is 2.03 Å. The Ta(3)-O(3) bond length is 2.00 Å. The Ta(3)-O(5) bond length is 2.02 Å. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(19), one O(24), one O(30), one O(4), and one O(6) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Ta(5)O6 octahedra, and  an edgeedge with one Ta(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Ta(4)-O(12) bond length is 1.85 Å. The Ta(4)-O(19) bond length is 2.03 Å. The Ta(4)-O(24) bond length is 2.24 Å. The Ta(4)-O(30) bond length is 2.03 Å. The Ta(4)-O(4) bond length is 2.00 Å. The Ta(4)-O(6) bond length is 2.02 Å. In the fifth Ta site, Ta(5) is bonded to one O(13), one O(19), one O(23), one O(27), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Ta(3)O6 octahedra, and  an edgeedge with one Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Ta(5)-O(13) bond length is 1.85 Å. The Ta(5)-O(19) bond length is 2.24 Å. The Ta(5)-O(23) bond length is 2.03 Å. The Ta(5)-O(27) bond length is 2.03 Å. The Ta(5)-O(3) bond length is 2.02 Å. The Ta(5)-O(6) bond length is 2.00 Å. In the sixth Ta site, Ta(6) is bonded to one O(14), one O(20), one O(24), one O(28), one O(4), and one O(5) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Ta(3)O6 octahedra, and  an edgeedge with one Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. The Ta(6)-O(14) bond length is 1.85 Å. The Ta(6)-O(20) bond length is 2.24 Å. The Ta(6)-O(24) bond length is 2.03 Å. The Ta(6)-O(28) bond length is 2.03 Å. The Ta(6)-O(4) bond length is 2.02 Å. The Ta(6)-O(5) bond length is 2.00 Å. In the seventh Ta site, Ta(7) is bonded to one O(1), one O(15), one O(17), one O(22), one O(25), and one O(7) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. The Ta(7)-O(1) bond length is 2.04 Å. The Ta(7)-O(15) bond length is 1.84 Å. The Ta(7)-O(17) bond length is 2.23 Å. The Ta(7)-O(22) bond length is 2.02 Å. The Ta(7)-O(25) bond length is 2.03 Å. The Ta(7)-O(7) bond length is 2.01 Å. In the eighth Ta site, Ta(8) is bonded to one O(16), one O(18), one O(2), one O(21), one O(26), and one O(8) atom to form distorted TaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Ta(8)-O(16) bond length is 1.84 Å. The Ta(8)-O(18) bond length is 2.23 Å. The Ta(8)-O(2) bond length is 2.04 Å. The Ta(8)-O(21) bond length is 2.02 Å. The Ta(8)-O(26) bond length is 2.03 Å. The Ta(8)-O(8) bond length is 2.01 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(13), one O(15), one O(5), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Ta(5)O6 octahedra,  a cornercorner with one Ta(6)O6 octahedra,  a cornercorner with one Ta(7)O6 octahedra,  a cornercorner with one Ta(8)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Fe(1)-O(10) bond length is 2.17 Å. The Fe(1)-O(11) bond length is 2.13 Å. The Fe(1)-O(13) bond length is 2.21 Å. The Fe(1)-O(15) bond length is 2.19 Å. The Fe(1)-O(5) bond length is 2.22 Å. The Fe(1)-O(8) bond length is 2.16 Å. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(13), one O(16), one O(2), and one O(3) atom to form FeO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(5)O6 octahedra, corners with two equivalent Ta(8)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Fe(2)-O(10) bond length is 2.18 Å. The Fe(2)-O(12) bond length is 2.21 Å. The Fe(2)-O(13) bond length is 2.13 Å. The Fe(2)-O(16) bond length is 2.17 Å. The Fe(2)-O(2) bond length is 2.17 Å. The Fe(2)-O(3) bond length is 2.22 Å. In the third Fe site, Fe(3) is bonded to one O(12), one O(14), one O(16), one O(6), one O(7), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one Ta(5)O6 octahedra,  a cornercorner with one Ta(6)O6 octahedra,  a cornercorner with one Ta(7)O6 octahedra,  a cornercorner with one Ta(8)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Fe(3)-O(12) bond length is 2.13 Å. The Fe(3)-O(14) bond length is 2.20 Å. The Fe(3)-O(16) bond length is 2.17 Å. The Fe(3)-O(6) bond length is 2.22 Å. The Fe(3)-O(7) bond length is 2.16 Å. The Fe(3)-O(9) bond length is 2.17 Å. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(14), one O(15), one O(4), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra,  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(6)O6 octahedra, corners with two equivalent Ta(7)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. The Fe(4)-O(1) bond length is 2.17 Å. The Fe(4)-O(11) bond length is 2.20 Å. The Fe(4)-O(14) bond length is 2.14 Å. The Fe(4)-O(15) bond length is 2.16 Å. The Fe(4)-O(4) bond length is 2.22 Å. The Fe(4)-O(9) bond length is 2.18 Å. There are eight inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted see-saw-like geometry to one O(23), one O(28), one O(29), and one O(31) atom. The Zn(1)-O(23) bond length is 1.96 Å. The Zn(1)-O(28) bond length is 2.02 Å. The Zn(1)-O(29) bond length is 1.99 Å. The Zn(1)-O(31) bond length is 2.14 Å. In the second Zn site, Zn(2) is bonded in a distorted see-saw-like geometry to one O(24), one O(27), one O(30), and one O(32) atom. The Zn(2)-O(24) bond length is 1.96 Å. The Zn(2)-O(27) bond length is 2.02 Å. The Zn(2)-O(30) bond length is 1.99 Å. The Zn(2)-O(32) bond length is 2.14 Å. In the third Zn site, Zn(3) is bonded in a distorted see-saw-like geometry to one O(21), one O(25), one O(29), and one O(31) atom. The Zn(3)-O(21) bond length is 1.97 Å. The Zn(3)-O(25) bond length is 2.03 Å. The Zn(3)-O(29) bond length is 2.13 Å. The Zn(3)-O(31) bond length is 1.98 Å. In the fourth Zn site, Zn(4) is bonded in a distorted see-saw-like geometry to one O(22), one O(26), one O(30), and one O(32) atom. The Zn(4)-O(22) bond length is 1.97 Å. The Zn(4)-O(26) bond length is 2.03 Å. The Zn(4)-O(30) bond length is 2.12 Å. The Zn(4)-O(32) bond length is 1.98 Å. In the fifth Zn site, Zn(5) is bonded in a distorted see-saw-like geometry to one O(17), one O(25), one O(27), and one O(32) atom. The Zn(5)-O(17) bond length is 1.97 Å. The Zn(5)-O(25) bond length is 1.99 Å. The Zn(5)-O(27) bond length is 2.13 Å. The Zn(5)-O(32) bond length is 2.03 Å. In the sixth Zn site, Zn(6) is bonded in a distorted see-saw-like geometry to one O(18), one O(26), one O(28), and one O(31) atom. The Zn(6)-O(18) bond length is 1.97 Å. The Zn(6)-O(26) bond length is 1.99 Å. The Zn(6)-O(28) bond length is 2.13 Å. The Zn(6)-O(31) bond length is 2.03 Å. In the seventh Zn site, Zn(7) is bonded in a distorted see-saw-like geometry to one O(19), one O(25), one O(27), and one O(29) atom. The Zn(7)-O(19) bond length is 1.96 Å. The Zn(7)-O(25) bond length is 2.13 Å. The Zn(7)-O(27) bond length is 1.98 Å. The Zn(7)-O(29) bond length is 2.02 Å. In the eighth Zn site, Zn(8) is bonded in a distorted see-saw-like geometry to one O(20), one O(26), one O(28), and one O(30) atom. The Zn(8)-O(20) bond length is 1.96 Å. The Zn(8)-O(26) bond length is 2.14 Å. The Zn(8)-O(28) bond length is 1.98 Å. The Zn(8)-O(30) bond length is 2.02 Å. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ta(2), one Ta(7), and one Fe(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ta(1), one Ta(8), and one Fe(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ta(3), one Ta(5), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(4), one Ta(6), and one Fe(4) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(3), one Ta(6), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ta(4), one Ta(5), and one Fe(3) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Ta(1), one Ta(7), and one Fe(3) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ta(2), one Ta(8), and one Fe(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Ta(1), one Fe(3), and one Fe(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Ta(2), one Fe(1), and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ta(3), one Fe(1), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ta(4), one Fe(2), and one Fe(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ta(5), one Fe(1), and one Fe(2) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ta(6), one Fe(3), and one Fe(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ta(7), one Fe(1), and one Fe(4) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Ta(8), one Fe(2), and one Fe(3) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(7), and one Zn(5) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(8), and one Zn(6) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Ta(4), one Ta(5), and one Zn(7) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Ta(3), one Ta(6), and one Zn(8) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(8), and one Zn(3) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(7), and one Zn(4) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Ta(3), one Ta(5), and one Zn(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Ta(4), one Ta(6), and one Zn(2) atom. In the twenty-fifth O site, O(25) is bonded to one Ta(7), one Zn(3), one Zn(5), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-sixth O site, O(26) is bonded to one Ta(8), one Zn(4), one Zn(6), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-seventh O site, O(27) is bonded to one Ta(5), one Zn(2), one Zn(5), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-eighth O site, O(28) is bonded to one Ta(6), one Zn(1), one Zn(6), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the twenty-ninth O site, O(29) is bonded to one Ta(3), one Zn(1), one Zn(3), and one Zn(7) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirtieth O site, O(30) is bonded to one Ta(4), one Zn(2), one Zn(4), and one Zn(8) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirty-first O site, O(31) is bonded to one Ta(1), one Zn(1), one Zn(3), and one Zn(6) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids. In the thirty-second O site, O(32) is bonded to one Ta(2), one Zn(2), one Zn(4), and one Zn(5) atom to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids.