The compound described by Ba11Cu4Bi9O29 crystallizes in the monoclinic Cm space group. There are eleven inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(23), one O(25), one O(9), two equivalent O(1), two equivalent O(12), and two equivalent O(18) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one O(10), one O(24), one O(25), two equivalent O(11), two equivalent O(17), and two equivalent O(2) atoms. In the third Ba site, Ba(3) is bonded to one O(23), one O(4), one O(6), one O(8), and two equivalent O(3) atoms to form BaO6 octahedra that share corners with two equivalent Ba(3)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(5)O5 square pyramid,  a cornercorner with one Bi(7)O5 trigonal bipyramid, and edges with two equivalent Bi(6)O5 square pyramids. The corner-sharing octahedral tilt angles are 30°. In the fourth Ba site, Ba(4) is bonded in a 6-coordinate geometry to one O(24), one O(3), one O(5), one O(7), and two equivalent O(4) atoms. In the fifth Ba site, Ba(5) is bonded in a 8-coordinate geometry to one O(1), one O(21), two equivalent O(11), two equivalent O(12), and two equivalent O(9) atoms. In the sixth Ba site, Ba(6) is bonded in a 8-coordinate geometry to one O(2), one O(22), two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms. In the seventh Ba site, Ba(7) is bonded in a 7-coordinate geometry to one O(15), one O(22), one O(6), two equivalent O(18), and two equivalent O(7) atoms. In the eighth Ba site, Ba(8) is bonded in a 7-coordinate geometry to one O(16), one O(21), one O(5), two equivalent O(17), and two equivalent O(8) atoms. In the ninth Ba site, Ba(9) is bonded in a 9-coordinate geometry to one O(19), one O(8), one O(9), two equivalent O(11), two equivalent O(17), and two equivalent O(21) atoms. In the tenth Ba site, Ba(10) is bonded in a 9-coordinate geometry to one O(10), one O(20), one O(7), two equivalent O(12), two equivalent O(18), and two equivalent O(22) atoms. In the eleventh Ba site, Ba(11) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(2), two equivalent O(18), and two equivalent O(25) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(11) and two equivalent O(12) atoms. In the second Cu site, Cu(2) is bonded in a distorted square pyramidal geometry to one O(2), two equivalent O(11), and two equivalent O(17) atoms. In the third Cu site, Cu(3) is bonded in a distorted square co-planar geometry to one O(1), two equivalent O(12), and two equivalent O(18) atoms. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(25), one O(7), and two equivalent O(18) atoms. There are nine inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(13), one O(21), one O(5), and two equivalent O(19) atoms to form a mixture of edge and corner-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded to one O(14), one O(22), one O(6), and two equivalent O(20) atoms to form BiO5 square pyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(5)O5 square pyramid, corners with two equivalent Bi(2)O5 square pyramids, edges with two equivalent Bi(6)O5 square pyramids, and edges with two equivalent Bi(8)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 3°. In the third Bi site, Bi(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(16), and two equivalent O(23) atoms. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(15), one O(2), and two equivalent O(24) atoms. In the fifth Bi site, Bi(5) is bonded to one O(14), one O(19), one O(4), and two equivalent O(5) atoms to form BiO5 square pyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent Bi(5)O5 square pyramids,  a cornercorner with one Bi(7)O5 trigonal bipyramid, corners with two equivalent Bi(8)O5 trigonal bipyramids, and edges with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 64°. In the sixth Bi site, Bi(6) is bonded to one O(13), one O(20), one O(3), and two equivalent O(6) atoms to form distorted BiO5 square pyramids that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent Bi(6)O5 square pyramids,  a cornercorner with one Bi(8)O5 trigonal bipyramid, corners with two equivalent Bi(7)O5 trigonal bipyramids, edges with two equivalent Ba(3)O6 octahedra, and edges with two equivalent Bi(2)O5 square pyramids. In the seventh Bi site, Bi(7) is bonded to one O(19), one O(23), one O(9), and two equivalent O(13) atoms to form distorted BiO5 trigonal bipyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(5)O5 square pyramid, corners with two equivalent Bi(6)O5 square pyramids, corners with two equivalent Bi(7)O5 trigonal bipyramids, and edges with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 71°. In the eighth Bi site, Bi(8) is bonded to one O(10), one O(20), one O(24), and two equivalent O(14) atoms to form a mixture of distorted edge and corner-sharing BiO5 trigonal bipyramids. In the ninth Bi site, Bi(9) is bonded in a 3-coordinate geometry to one O(25), one O(8), two equivalent O(16), and two equivalent O(17) atoms. There are twenty-five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(5), two equivalent Ba(1), one Cu(3), and one Bi(3) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(6), two equivalent Ba(2), one Cu(2), and one Bi(4) atom. In the third O site, O(3) is bonded to one Ba(4), two equivalent Ba(3), and one Bi(6) atom to form distorted OBa3Bi tetrahedra that share  a cornercorner with one O(5)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid, corners with two equivalent O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, corners with two equivalent O(23)Ba2Bi3 trigonal bipyramids, edges with two equivalent O(6)Ba2Bi3 square pyramids, and edges with two equivalent O(4)Ba3Bi tetrahedra. In the fourth O site, O(4) is bonded to one Ba(3), two equivalent Ba(4), and one Bi(5) atom to form OBa3Bi tetrahedra that share  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(19)BaBi4 square pyramid, corners with two equivalent O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, corners with two equivalent O(24)Ba2Bi3 trigonal bipyramids, edges with two equivalent O(5)Ba2Bi3 square pyramids, and edges with two equivalent O(3)Ba3Bi tetrahedra. In the fifth O site, O(5) is bonded to one Ba(4), one Ba(8), one Bi(1), and two equivalent Bi(5) atoms to form distorted OBa2Bi3 square pyramids that share corners with two equivalent O(5)Ba2Bi3 square pyramids,  a cornercorner with one O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, edges with two equivalent O(19)BaBi4 square pyramids, and edges with two equivalent O(4)Ba3Bi tetrahedra. In the sixth O site, O(6) is bonded to one Ba(3), one Ba(7), one Bi(2), and two equivalent Bi(6) atoms to form distorted OBa2Bi3 square pyramids that share corners with two equivalent O(18)Ba4Cu2 octahedra, corners with two equivalent O(6)Ba2Bi3 square pyramids,  a cornercorner with one O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, edges with two equivalent O(20)BaBi4 square pyramids, and edges with two equivalent O(3)Ba3Bi tetrahedra. The corner-sharing octahedral tilt angles are 44°. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Ba(10), one Ba(4), two equivalent Ba(7), and one Cu(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(9), two equivalent Ba(8), and one Bi(9) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(9), two equivalent Ba(5), and one Bi(7) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(10), one Ba(2), two equivalent Ba(6), and one Bi(8) atom. In the eleventh O site, O(11) is bonded to one Ba(2), one Ba(5), one Ba(6), one Ba(9), one Cu(1), and one Cu(2) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(12)Ba4Cu2 octahedra,  a cornercorner with one O(19)BaBi4 square pyramid,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(12)Ba4Cu2 octahedra,  a faceface with one O(12)Ba4Cu2 octahedra, and faces with two equivalent O(11)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the twelfth O site, O(12) is bonded to one Ba(1), one Ba(10), one Ba(5), one Ba(6), one Cu(1), and one Cu(3) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(11)Ba4Cu2 octahedra,  a cornercorner with one O(18)Ba4Cu2 octahedra,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(11)Ba4Cu2 octahedra,  an edgeedge with one O(18)Ba4Cu2 octahedra,  a faceface with one O(11)Ba4Cu2 octahedra,  a faceface with one O(18)Ba4Cu2 octahedra, and faces with two equivalent O(12)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(6), and two equivalent Bi(7) atoms. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Bi(2), one Bi(5), and two equivalent Bi(8) atoms. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ba(11), one Ba(7), and one Bi(4) atom. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Ba(11), one Ba(8), one Bi(3), and two equivalent Bi(9) atoms. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(8), one Ba(9), one Cu(2), and one Bi(9) atom. In the eighteenth O site, O(18) is bonded to one Ba(1), one Ba(10), one Ba(11), one Ba(7), one Cu(3), and one Cu(4) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(12)Ba4Cu2 octahedra,  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(12)Ba4Cu2 octahedra,  a faceface with one O(12)Ba4Cu2 octahedra, and faces with two equivalent O(18)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles are 5°. In the nineteenth O site, O(19) is bonded to one Ba(9), one Bi(5), one Bi(7), and two equivalent Bi(1) atoms to form OBaBi4 square pyramids that share corners with two equivalent O(11)Ba4Cu2 octahedra, corners with two equivalent O(19)BaBi4 square pyramids,  a cornercorner with one O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, and edges with two equivalent O(5)Ba2Bi3 square pyramids. The corner-sharing octahedral tilt angles are 42°. In the twentieth O site, O(20) is bonded to one Ba(10), one Bi(6), one Bi(8), and two equivalent Bi(2) atoms to form distorted OBaBi4 square pyramids that share corners with two equivalent O(12)Ba4Cu2 octahedra, corners with two equivalent O(18)Ba4Cu2 octahedra, corners with two equivalent O(20)BaBi4 square pyramids,  a cornercorner with one O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, and edges with two equivalent O(6)Ba2Bi3 square pyramids. The corner-sharing octahedral tilt angles range from 44-46°. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Ba(5), one Ba(8), two equivalent Ba(9), and one Bi(1) atom. In the twenty-second O site, O(22) is bonded in a 5-coordinate geometry to one Ba(6), one Ba(7), two equivalent Ba(10), and one Bi(2) atom. In the twenty-third O site, O(23) is bonded to one Ba(1), one Ba(3), one Bi(7), and two equivalent Bi(3) atoms to form distorted OBa2Bi3 trigonal bipyramids that share corners with two equivalent O(12)Ba4Cu2 octahedra, corners with two equivalent O(18)Ba4Cu2 octahedra,  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(19)BaBi4 square pyramid,  a cornercorner with one O(4)Ba3Bi tetrahedra, corners with two equivalent O(3)Ba3Bi tetrahedra, and corners with two equivalent O(23)Ba2Bi3 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 38-55°. In the twenty-fourth O site, O(24) is bonded to one Ba(2), one Ba(4), one Bi(8), and two equivalent Bi(4) atoms to form distorted OBa2Bi3 trigonal bipyramids that share corners with two equivalent O(11)Ba4Cu2 octahedra,  a cornercorner with one O(5)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(3)Ba3Bi tetrahedra, corners with two equivalent O(4)Ba3Bi tetrahedra, and corners with two equivalent O(24)Ba2Bi3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 57°. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(11), one Cu(4), and one Bi(9) atom. is represented by the CIF file [CIF]
data_Ba11Cu4Bi9O29
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.295
_cell_length_b   12.710
_cell_length_c   14.515
_cell_angle_alpha   90.968
_cell_angle_beta   79.490
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   960.401
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.474  0.736  0.052  1.0
  Ba  Ba1  1  0.528  0.268  0.945  1.0
  Ba  Ba2  1  0.292  0.560  0.416  1.0
  Ba  Ba3  1  0.695  0.449  0.609  1.0
  Ba  Ba4  1  0.937  0.950  0.127  1.0
  Ba  Ba5  1  0.064  0.050  0.873  1.0
  Ba  Ba6  1  0.139  0.654  0.722  1.0
  Ba  Ba7  1  0.854  0.340  0.292  1.0
  Ba  Ba8  1  0.399  0.148  0.203  1.0
  Ba  Ba9  1  0.602  0.845  0.797  1.0
  Ba  Ba10  1  0.011  0.515  0.978  1.0
  Cu  Cu11  1  0.500  0.002  1.000  1.0
  Cu  Cu12  1  0.965  0.213  0.069  1.0
  Cu  Cu13  1  0.034  0.791  0.931  1.0
  Cu  Cu14  1  0.573  0.581  0.854  1.0
  Bi  Bi15  1  0.797  0.070  0.406  1.0
  Bi  Bi16  1  0.203  0.929  0.594  1.0
  Bi  Bi17  1  0.878  0.672  0.243  1.0
  Bi  Bi18  1  0.123  0.315  0.755  1.0
  Bi  Bi19  1  0.250  0.237  0.500  1.0
  Bi  Bi20  1  0.752  0.770  0.496  1.0
  Bi  Bi21  1  0.337  0.867  0.327  1.0
  Bi  Bi22  1  0.665  0.129  0.670  1.0
  Bi  Bi23  1  0.422  0.439  0.155  1.0
  O  O24  1  0.946  0.731  0.108  1.0
  O  O25  1  0.053  0.267  0.895  1.0
  O  O26  1  0.774  0.598  0.453  1.0
  O  O27  1  0.223  0.402  0.553  1.0
  O  O28  1  0.762  0.237  0.475  1.0
  O  O29  1  0.240  0.764  0.520  1.0
  O  O30  1  0.639  0.611  0.721  1.0
  O  O31  1  0.348  0.386  0.303  1.0
  O  O32  1  0.404  0.928  0.192  1.0
  O  O33  1  0.598  0.067  0.805  1.0
  O  O34  1  0.729  0.107  0.037  1.0
  O  O35  1  0.767  0.897  0.964  1.0
  O  O36  1  0.269  0.897  0.964  1.0
  O  O37  1  0.234  0.107  0.037  1.0
  O  O38  1  0.819  0.866  0.361  1.0
  O  O39  1  0.185  0.133  0.630  1.0
  O  O40  1  0.105  0.471  0.790  1.0
  O  O41  1  0.903  0.516  0.195  1.0
  O  O42  1  0.691  0.311  0.117  1.0
  O  O43  1  0.821  0.688  0.890  1.0
  O  O44  1  0.289  0.688  0.890  1.0
  O  O45  1  0.192  0.311  0.117  1.0
  O  O46  1  0.301  0.069  0.399  1.0
  O  O47  1  0.700  0.923  0.599  1.0
  O  O48  1  0.866  0.124  0.269  1.0
  O  O49  1  0.134  0.878  0.732  1.0
  O  O50  1  0.366  0.701  0.268  1.0
  O  O51  1  0.634  0.289  0.732  1.0
  O  O52  1  0.514  0.506  0.972  1.0
[/CIF]
.
The compound described by Ba11Cu4Bi9O29 crystallizes in the monoclinic Cm space group. There are eleven inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(23), one O(25), one O(9), two equivalent O(1), two equivalent O(12), and two equivalent O(18) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one O(10), one O(24), one O(25), two equivalent O(11), two equivalent O(17), and two equivalent O(2) atoms. In the third Ba site, Ba(3) is bonded to one O(23), one O(4), one O(6), one O(8), and two equivalent O(3) atoms to form BaO6 octahedra that share corners with two equivalent Ba(3)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(5)O5 square pyramid,  a cornercorner with one Bi(7)O5 trigonal bipyramid, and edges with two equivalent Bi(6)O5 square pyramids. The corner-sharing octahedral tilt angles are 30°. In the fourth Ba site, Ba(4) is bonded in a 6-coordinate geometry to one O(24), one O(3), one O(5), one O(7), and two equivalent O(4) atoms. In the fifth Ba site, Ba(5) is bonded in a 8-coordinate geometry to one O(1), one O(21), two equivalent O(11), two equivalent O(12), and two equivalent O(9) atoms. In the sixth Ba site, Ba(6) is bonded in a 8-coordinate geometry to one O(2), one O(22), two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms. In the seventh Ba site, Ba(7) is bonded in a 7-coordinate geometry to one O(15), one O(22), one O(6), two equivalent O(18), and two equivalent O(7) atoms. In the eighth Ba site, Ba(8) is bonded in a 7-coordinate geometry to one O(16), one O(21), one O(5), two equivalent O(17), and two equivalent O(8) atoms. In the ninth Ba site, Ba(9) is bonded in a 9-coordinate geometry to one O(19), one O(8), one O(9), two equivalent O(11), two equivalent O(17), and two equivalent O(21) atoms. In the tenth Ba site, Ba(10) is bonded in a 9-coordinate geometry to one O(10), one O(20), one O(7), two equivalent O(12), two equivalent O(18), and two equivalent O(22) atoms. In the eleventh Ba site, Ba(11) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(2), two equivalent O(18), and two equivalent O(25) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(11) and two equivalent O(12) atoms. In the second Cu site, Cu(2) is bonded in a distorted square pyramidal geometry to one O(2), two equivalent O(11), and two equivalent O(17) atoms. In the third Cu site, Cu(3) is bonded in a distorted square co-planar geometry to one O(1), two equivalent O(12), and two equivalent O(18) atoms. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(25), one O(7), and two equivalent O(18) atoms. There are nine inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(13), one O(21), one O(5), and two equivalent O(19) atoms to form a mixture of edge and corner-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded to one O(14), one O(22), one O(6), and two equivalent O(20) atoms to form BiO5 square pyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(5)O5 square pyramid, corners with two equivalent Bi(2)O5 square pyramids, edges with two equivalent Bi(6)O5 square pyramids, and edges with two equivalent Bi(8)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 3°. In the third Bi site, Bi(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(16), and two equivalent O(23) atoms. In the fourth Bi site, Bi(4) is bonded in a 4-coordinate geometry to one O(15), one O(2), and two equivalent O(24) atoms. In the fifth Bi site, Bi(5) is bonded to one O(14), one O(19), one O(4), and two equivalent O(5) atoms to form BiO5 square pyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent Bi(5)O5 square pyramids,  a cornercorner with one Bi(7)O5 trigonal bipyramid, corners with two equivalent Bi(8)O5 trigonal bipyramids, and edges with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 64°. In the sixth Bi site, Bi(6) is bonded to one O(13), one O(20), one O(3), and two equivalent O(6) atoms to form distorted BiO5 square pyramids that share  a cornercorner with one Bi(1)O5 square pyramid, corners with two equivalent Bi(6)O5 square pyramids,  a cornercorner with one Bi(8)O5 trigonal bipyramid, corners with two equivalent Bi(7)O5 trigonal bipyramids, edges with two equivalent Ba(3)O6 octahedra, and edges with two equivalent Bi(2)O5 square pyramids. In the seventh Bi site, Bi(7) is bonded to one O(19), one O(23), one O(9), and two equivalent O(13) atoms to form distorted BiO5 trigonal bipyramids that share  a cornercorner with one Ba(3)O6 octahedra,  a cornercorner with one Bi(5)O5 square pyramid, corners with two equivalent Bi(6)O5 square pyramids, corners with two equivalent Bi(7)O5 trigonal bipyramids, and edges with two equivalent Bi(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 71°. In the eighth Bi site, Bi(8) is bonded to one O(10), one O(20), one O(24), and two equivalent O(14) atoms to form a mixture of distorted edge and corner-sharing BiO5 trigonal bipyramids. In the ninth Bi site, Bi(9) is bonded in a 3-coordinate geometry to one O(25), one O(8), two equivalent O(16), and two equivalent O(17) atoms. There are twenty-five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(5), two equivalent Ba(1), one Cu(3), and one Bi(3) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Ba(11), one Ba(6), two equivalent Ba(2), one Cu(2), and one Bi(4) atom. In the third O site, O(3) is bonded to one Ba(4), two equivalent Ba(3), and one Bi(6) atom to form distorted OBa3Bi tetrahedra that share  a cornercorner with one O(5)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid, corners with two equivalent O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, corners with two equivalent O(23)Ba2Bi3 trigonal bipyramids, edges with two equivalent O(6)Ba2Bi3 square pyramids, and edges with two equivalent O(4)Ba3Bi tetrahedra. In the fourth O site, O(4) is bonded to one Ba(3), two equivalent Ba(4), and one Bi(5) atom to form OBa3Bi tetrahedra that share  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(19)BaBi4 square pyramid, corners with two equivalent O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, corners with two equivalent O(24)Ba2Bi3 trigonal bipyramids, edges with two equivalent O(5)Ba2Bi3 square pyramids, and edges with two equivalent O(3)Ba3Bi tetrahedra. In the fifth O site, O(5) is bonded to one Ba(4), one Ba(8), one Bi(1), and two equivalent Bi(5) atoms to form distorted OBa2Bi3 square pyramids that share corners with two equivalent O(5)Ba2Bi3 square pyramids,  a cornercorner with one O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, edges with two equivalent O(19)BaBi4 square pyramids, and edges with two equivalent O(4)Ba3Bi tetrahedra. In the sixth O site, O(6) is bonded to one Ba(3), one Ba(7), one Bi(2), and two equivalent Bi(6) atoms to form distorted OBa2Bi3 square pyramids that share corners with two equivalent O(18)Ba4Cu2 octahedra, corners with two equivalent O(6)Ba2Bi3 square pyramids,  a cornercorner with one O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, edges with two equivalent O(20)BaBi4 square pyramids, and edges with two equivalent O(3)Ba3Bi tetrahedra. The corner-sharing octahedral tilt angles are 44°. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Ba(10), one Ba(4), two equivalent Ba(7), and one Cu(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(9), two equivalent Ba(8), and one Bi(9) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(9), two equivalent Ba(5), and one Bi(7) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(10), one Ba(2), two equivalent Ba(6), and one Bi(8) atom. In the eleventh O site, O(11) is bonded to one Ba(2), one Ba(5), one Ba(6), one Ba(9), one Cu(1), and one Cu(2) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(12)Ba4Cu2 octahedra,  a cornercorner with one O(19)BaBi4 square pyramid,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(12)Ba4Cu2 octahedra,  a faceface with one O(12)Ba4Cu2 octahedra, and faces with two equivalent O(11)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the twelfth O site, O(12) is bonded to one Ba(1), one Ba(10), one Ba(5), one Ba(6), one Cu(1), and one Cu(3) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(11)Ba4Cu2 octahedra,  a cornercorner with one O(18)Ba4Cu2 octahedra,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(11)Ba4Cu2 octahedra,  an edgeedge with one O(18)Ba4Cu2 octahedra,  a faceface with one O(11)Ba4Cu2 octahedra,  a faceface with one O(18)Ba4Cu2 octahedra, and faces with two equivalent O(12)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(6), and two equivalent Bi(7) atoms. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Bi(2), one Bi(5), and two equivalent Bi(8) atoms. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ba(11), one Ba(7), and one Bi(4) atom. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Ba(11), one Ba(8), one Bi(3), and two equivalent Bi(9) atoms. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(8), one Ba(9), one Cu(2), and one Bi(9) atom. In the eighteenth O site, O(18) is bonded to one Ba(1), one Ba(10), one Ba(11), one Ba(7), one Cu(3), and one Cu(4) atom to form distorted OBa4Cu2 octahedra that share  a cornercorner with one O(12)Ba4Cu2 octahedra,  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid,  an edgeedge with one O(12)Ba4Cu2 octahedra,  a faceface with one O(12)Ba4Cu2 octahedra, and faces with two equivalent O(18)Ba4Cu2 octahedra. The corner-sharing octahedral tilt angles are 5°. In the nineteenth O site, O(19) is bonded to one Ba(9), one Bi(5), one Bi(7), and two equivalent Bi(1) atoms to form OBaBi4 square pyramids that share corners with two equivalent O(11)Ba4Cu2 octahedra, corners with two equivalent O(19)BaBi4 square pyramids,  a cornercorner with one O(4)Ba3Bi tetrahedra,  a cornercorner with one O(23)Ba2Bi3 trigonal bipyramid, and edges with two equivalent O(5)Ba2Bi3 square pyramids. The corner-sharing octahedral tilt angles are 42°. In the twentieth O site, O(20) is bonded to one Ba(10), one Bi(6), one Bi(8), and two equivalent Bi(2) atoms to form distorted OBaBi4 square pyramids that share corners with two equivalent O(12)Ba4Cu2 octahedra, corners with two equivalent O(18)Ba4Cu2 octahedra, corners with two equivalent O(20)BaBi4 square pyramids,  a cornercorner with one O(3)Ba3Bi tetrahedra,  a cornercorner with one O(24)Ba2Bi3 trigonal bipyramid, and edges with two equivalent O(6)Ba2Bi3 square pyramids. The corner-sharing octahedral tilt angles range from 44-46°. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Ba(5), one Ba(8), two equivalent Ba(9), and one Bi(1) atom. In the twenty-second O site, O(22) is bonded in a 5-coordinate geometry to one Ba(6), one Ba(7), two equivalent Ba(10), and one Bi(2) atom. In the twenty-third O site, O(23) is bonded to one Ba(1), one Ba(3), one Bi(7), and two equivalent Bi(3) atoms to form distorted OBa2Bi3 trigonal bipyramids that share corners with two equivalent O(12)Ba4Cu2 octahedra, corners with two equivalent O(18)Ba4Cu2 octahedra,  a cornercorner with one O(6)Ba2Bi3 square pyramid,  a cornercorner with one O(19)BaBi4 square pyramid,  a cornercorner with one O(4)Ba3Bi tetrahedra, corners with two equivalent O(3)Ba3Bi tetrahedra, and corners with two equivalent O(23)Ba2Bi3 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 38-55°. In the twenty-fourth O site, O(24) is bonded to one Ba(2), one Ba(4), one Bi(8), and two equivalent Bi(4) atoms to form distorted OBa2Bi3 trigonal bipyramids that share corners with two equivalent O(11)Ba4Cu2 octahedra,  a cornercorner with one O(5)Ba2Bi3 square pyramid,  a cornercorner with one O(20)BaBi4 square pyramid,  a cornercorner with one O(3)Ba3Bi tetrahedra, corners with two equivalent O(4)Ba3Bi tetrahedra, and corners with two equivalent O(24)Ba2Bi3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 57°. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(11), one Cu(4), and one Bi(9) atom. is represented by the CIF file [CIF]
data_Ba11Cu4Bi9O29
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.295
_cell_length_b   12.710
_cell_length_c   14.515
_cell_angle_alpha   90.968
_cell_angle_beta   79.490
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   960.401
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.474  0.736  0.052  1.0
  Ba  Ba1  1  0.528  0.268  0.945  1.0
  Ba  Ba2  1  0.292  0.560  0.416  1.0
  Ba  Ba3  1  0.695  0.449  0.609  1.0
  Ba  Ba4  1  0.937  0.950  0.127  1.0
  Ba  Ba5  1  0.064  0.050  0.873  1.0
  Ba  Ba6  1  0.139  0.654  0.722  1.0
  Ba  Ba7  1  0.854  0.340  0.292  1.0
  Ba  Ba8  1  0.399  0.148  0.203  1.0
  Ba  Ba9  1  0.602  0.845  0.797  1.0
  Ba  Ba10  1  0.011  0.515  0.978  1.0
  Cu  Cu11  1  0.500  0.002  1.000  1.0
  Cu  Cu12  1  0.965  0.213  0.069  1.0
  Cu  Cu13  1  0.034  0.791  0.931  1.0
  Cu  Cu14  1  0.573  0.581  0.854  1.0
  Bi  Bi15  1  0.797  0.070  0.406  1.0
  Bi  Bi16  1  0.203  0.929  0.594  1.0
  Bi  Bi17  1  0.878  0.672  0.243  1.0
  Bi  Bi18  1  0.123  0.315  0.755  1.0
  Bi  Bi19  1  0.250  0.237  0.500  1.0
  Bi  Bi20  1  0.752  0.770  0.496  1.0
  Bi  Bi21  1  0.337  0.867  0.327  1.0
  Bi  Bi22  1  0.665  0.129  0.670  1.0
  Bi  Bi23  1  0.422  0.439  0.155  1.0
  O  O24  1  0.946  0.731  0.108  1.0
  O  O25  1  0.053  0.267  0.895  1.0
  O  O26  1  0.774  0.598  0.453  1.0
  O  O27  1  0.223  0.402  0.553  1.0
  O  O28  1  0.762  0.237  0.475  1.0
  O  O29  1  0.240  0.764  0.520  1.0
  O  O30  1  0.639  0.611  0.721  1.0
  O  O31  1  0.348  0.386  0.303  1.0
  O  O32  1  0.404  0.928  0.192  1.0
  O  O33  1  0.598  0.067  0.805  1.0
  O  O34  1  0.729  0.107  0.037  1.0
  O  O35  1  0.767  0.897  0.964  1.0
  O  O36  1  0.269  0.897  0.964  1.0
  O  O37  1  0.234  0.107  0.037  1.0
  O  O38  1  0.819  0.866  0.361  1.0
  O  O39  1  0.185  0.133  0.630  1.0
  O  O40  1  0.105  0.471  0.790  1.0
  O  O41  1  0.903  0.516  0.195  1.0
  O  O42  1  0.691  0.311  0.117  1.0
  O  O43  1  0.821  0.688  0.890  1.0
  O  O44  1  0.289  0.688  0.890  1.0
  O  O45  1  0.192  0.311  0.117  1.0
  O  O46  1  0.301  0.069  0.399  1.0
  O  O47  1  0.700  0.923  0.599  1.0
  O  O48  1  0.866  0.124  0.269  1.0
  O  O49  1  0.134  0.878  0.732  1.0
  O  O50  1  0.366  0.701  0.268  1.0
  O  O51  1  0.634  0.289  0.732  1.0
  O  O52  1  0.514  0.506  0.972  1.0
[/CIF]
.