Ba7Pb17O24 crystallizes in the monoclinic Pm space group. There are five inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(13), two equivalent O(3), and two equivalent O(6) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(4), one O(5), one O(7), and one O(8) atom. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(11), two equivalent O(8), and two equivalent O(9) atoms. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(13), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. In the fifth Ba site, Ba(5) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(13), and two equivalent O(3) atoms. There are eleven inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(1) atoms. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(4) atom. In the third Pb site, Pb(3) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(8) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(4), one O(6), and one O(7) atom. In the fifth Pb site, Pb(5) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(11) atoms. In the sixth Pb site, Pb(6) is bonded in a distorted T-shaped geometry to one O(12), one O(13), and one O(4) atom. In the seventh Pb site, Pb(7) is bonded in a distorted T-shaped geometry to one O(7), one O(8), and one O(9) atom. In the eighth Pb site, Pb(8) is bonded in a 3-coordinate geometry to one O(10) and two equivalent O(6) atoms. In the ninth Pb site, Pb(9) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(9) atom. In the tenth Pb site, Pb(10) is bonded in a 3-coordinate geometry to one O(10) and two equivalent O(3) atoms. In the eleventh Pb site, Pb(11) is bonded in a distorted T-shaped geometry to one O(11), one O(12), and one O(9) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(1), and one Pb(9) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(2), and one Pb(9) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(4), one Ba(5), one Pb(10), and one Pb(2) atom to form distorted face-sharing OBa3Pb2 square pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ba(2), one Pb(2), one Pb(4), and one Pb(6) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Ba(2), one Pb(1), one Pb(3), and one Pb(5) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Ba(1), one Ba(4), one Pb(4), and one Pb(8) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(4), and one Pb(7) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(3), and one Pb(7) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Ba(3), one Ba(4), one Pb(11), one Pb(7), and one Pb(9) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ba(5), two equivalent Ba(4), one Pb(10), and one Pb(8) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(11), and one Pb(5) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(11), and one Pb(6) atom. In the thirteenth O site, O(13) is bonded in a distorted see-saw-like geometry to one Ba(1), one Ba(4), one Ba(5), and one Pb(6) atom.
Ba7Pb17O24 crystallizes in the monoclinic Pm space group. There are five inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(13), two equivalent O(3), and two equivalent O(6) atoms. Both Ba(1)-O(13) bond lengths are 2.81 Å. Both Ba(1)-O(3) bond lengths are 3.03 Å. Both Ba(1)-O(6) bond lengths are 2.90 Å. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(4), one O(5), one O(7), and one O(8) atom. The Ba(2)-O(1) bond length is 2.94 Å. The Ba(2)-O(11) bond length is 2.93 Å. The Ba(2)-O(12) bond length is 2.88 Å. The Ba(2)-O(2) bond length is 2.99 Å. The Ba(2)-O(4) bond length is 3.07 Å. The Ba(2)-O(5) bond length is 3.17 Å. The Ba(2)-O(7) bond length is 2.97 Å. The Ba(2)-O(8) bond length is 2.92 Å. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(11), two equivalent O(8), and two equivalent O(9) atoms. Both Ba(3)-O(1) bond lengths are 2.93 Å. Both Ba(3)-O(11) bond lengths are 2.89 Å. Both Ba(3)-O(8) bond lengths are 2.95 Å. Both Ba(3)-O(9) bond lengths are 3.16 Å. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(13), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. The Ba(4)-O(10) bond length is 3.23 Å. The Ba(4)-O(12) bond length is 2.87 Å. The Ba(4)-O(13) bond length is 2.84 Å. The Ba(4)-O(2) bond length is 2.92 Å. The Ba(4)-O(3) bond length is 3.03 Å. The Ba(4)-O(6) bond length is 3.11 Å. The Ba(4)-O(7) bond length is 2.87 Å. The Ba(4)-O(9) bond length is 3.15 Å. In the fifth Ba site, Ba(5) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(13), and two equivalent O(3) atoms. The Ba(5)-O(10) bond length is 2.49 Å. Both Ba(5)-O(13) bond lengths are 2.53 Å. Both Ba(5)-O(3) bond lengths are 3.08 Å. There are eleven inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(1) atoms. The Pb(1)-O(5) bond length is 2.22 Å. Both Pb(1)-O(1) bond lengths are 2.22 Å. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(4) atom. The Pb(2)-O(2) bond length is 2.21 Å. The Pb(2)-O(3) bond length is 2.24 Å. The Pb(2)-O(4) bond length is 2.21 Å. In the third Pb site, Pb(3) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(8) atoms. The Pb(3)-O(5) bond length is 2.22 Å. Both Pb(3)-O(8) bond lengths are 2.22 Å. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(4), one O(6), and one O(7) atom. The Pb(4)-O(4) bond length is 2.21 Å. The Pb(4)-O(6) bond length is 2.21 Å. The Pb(4)-O(7) bond length is 2.21 Å. In the fifth Pb site, Pb(5) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(11) atoms. The Pb(5)-O(5) bond length is 2.23 Å. Both Pb(5)-O(11) bond lengths are 2.22 Å. In the sixth Pb site, Pb(6) is bonded in a distorted T-shaped geometry to one O(12), one O(13), and one O(4) atom. The Pb(6)-O(12) bond length is 2.23 Å. The Pb(6)-O(13) bond length is 2.18 Å. The Pb(6)-O(4) bond length is 2.24 Å. In the seventh Pb site, Pb(7) is bonded in a distorted T-shaped geometry to one O(7), one O(8), and one O(9) atom. The Pb(7)-O(7) bond length is 2.22 Å. The Pb(7)-O(8) bond length is 2.22 Å. The Pb(7)-O(9) bond length is 2.22 Å. In the eighth Pb site, Pb(8) is bonded in a 3-coordinate geometry to one O(10) and two equivalent O(6) atoms. The Pb(8)-O(10) bond length is 2.15 Å. Both Pb(8)-O(6) bond lengths are 2.21 Å. In the ninth Pb site, Pb(9) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(9) atom. The Pb(9)-O(1) bond length is 2.23 Å. The Pb(9)-O(2) bond length is 2.22 Å. The Pb(9)-O(9) bond length is 2.22 Å. In the tenth Pb site, Pb(10) is bonded in a 3-coordinate geometry to one O(10) and two equivalent O(3) atoms. The Pb(10)-O(10) bond length is 2.17 Å. Both Pb(10)-O(3) bond lengths are 2.23 Å. In the eleventh Pb site, Pb(11) is bonded in a distorted T-shaped geometry to one O(11), one O(12), and one O(9) atom. The Pb(11)-O(11) bond length is 2.22 Å. The Pb(11)-O(12) bond length is 2.22 Å. The Pb(11)-O(9) bond length is 2.23 Å. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(1), and one Pb(9) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(2), and one Pb(9) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(4), one Ba(5), one Pb(10), and one Pb(2) atom to form distorted face-sharing OBa3Pb2 square pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ba(2), one Pb(2), one Pb(4), and one Pb(6) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Ba(2), one Pb(1), one Pb(3), and one Pb(5) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Ba(1), one Ba(4), one Pb(4), and one Pb(8) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(4), and one Pb(7) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(3), and one Pb(7) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Ba(3), one Ba(4), one Pb(11), one Pb(7), and one Pb(9) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ba(5), two equivalent Ba(4), one Pb(10), and one Pb(8) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(3), one Pb(11), and one Pb(5) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ba(2), one Ba(4), one Pb(11), and one Pb(6) atom. In the thirteenth O site, O(13) is bonded in a distorted see-saw-like geometry to one Ba(1), one Ba(4), one Ba(5), and one Pb(6) atom.