The structure described by MgAg20(BiO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 3-coordinate geometry to one Ag(13), one O(11), one O(7), and one O(9) atom. There are twenty inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to one O(16) and one O(9) atom. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(5) and one O(8) atom. In the third Ag site, Ag(3) is bonded in a linear geometry to one O(1) and one O(3) atom. In the fourth Ag site, Ag(4) is bonded in a linear geometry to one O(2) and one O(4) atom. In the fifth Ag site, Ag(5) is bonded in a 3-coordinate geometry to one O(14), one O(4), and one O(5) atom. In the sixth Ag site, Ag(6) is bonded in a linear geometry to one O(13) and one O(6) atom. In the seventh Ag site, Ag(7) is bonded in a 3-coordinate geometry to one O(12), one O(15), and one O(2) atom. In the eighth Ag site, Ag(8) is bonded in a 2-coordinate geometry to one O(1), one O(11), and one O(16) atom. In the ninth Ag site, Ag(9) is bonded in a linear geometry to one O(11) and one O(2) atom. In the tenth Ag site, Ag(10) is bonded in a linear geometry to one O(1) and one O(12) atom. In the eleventh Ag site, Ag(11) is bonded in a linear geometry to one O(13) and one O(4) atom. In the twelfth Ag site, Ag(12) is bonded in a linear geometry to one O(14) and one O(3) atom. In the thirteenth Ag site, Ag(13) is bonded in a distorted bent 150 degrees geometry to one Mg(1) and one O(13) atom. In the fourteenth Ag site, Ag(14) is bonded in a linear geometry to one O(12) and one O(14) atom. In the fifteenth Ag site, Ag(15) is bonded in a linear geometry to one O(6) and one O(7) atom. In the sixteenth Ag site, Ag(16) is bonded in a linear geometry to one O(5) and one O(8) atom. In the seventeenth Ag site, Ag(17) is bonded in a linear geometry to one O(16) and one O(9) atom. In the eighteenth Ag site, Ag(18) is bonded in a linear geometry to one O(10) and one O(15) atom. In the nineteenth Ag site, Ag(19) is bonded in a linear geometry to one O(6) and one O(7) atom. In the twentieth Ag site, Ag(20) is bonded in a linear geometry to one O(10) and one O(15) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(14), one O(4), one O(6), and one O(8) atom to form edge-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded in a distorted rectangular see-saw-like geometry to one O(13), one O(3), one O(5), and one O(9) atom. In the third Bi site, Bi(3) is bonded to one O(10), one O(12), one O(16), one O(2), and one O(8) atom to form edge-sharing BiO5 square pyramids. In the fourth Bi site, Bi(4) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(15), and one O(7) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ag(10), one Ag(3), one Ag(8), and one Bi(4) atom. In the second O site, O(2) is bonded to one Ag(4), one Ag(7), one Ag(9), and one Bi(3) atom to form distorted OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(15)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(11)MgAg2Bi tetrahedra, and corners with two equivalent O(12)Ag3Bi tetrahedra. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Ag(12), one Ag(3), and one Bi(2) atom. In the fourth O site, O(4) is bonded to one Ag(11), one Ag(4), one Ag(5), and one Bi(1) atom to form distorted OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(5)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, and corners with two equivalent O(14)Ag3Bi tetrahedra. In the fifth O site, O(5) is bonded to one Ag(16), one Ag(2), one Ag(5), and one Bi(2) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra, and corners with two equivalent O(8)Ag2Bi2 tetrahedra. In the sixth O site, O(6) is bonded to one Ag(15), one Ag(19), one Ag(6), and one Bi(1) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra, and  a cornercorner with one O(4)Ag3Bi tetrahedra. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ag(15), one Ag(19), and one Bi(4) atom. In the eighth O site, O(8) is bonded to one Ag(16), one Ag(2), one Bi(1), and one Bi(3) atom to form OAg2Bi2 tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, corners with two equivalent O(5)Ag3Bi tetrahedra, and  an edgeedge with one O(10)Ag2Bi2 tetrahedra. In the ninth O site, O(9) is bonded in a distorted see-saw-like geometry to one Mg(1), one Ag(1), one Ag(17), and one Bi(2) atom. In the tenth O site, O(10) is bonded to one Ag(18), one Ag(20), one Bi(1), and one Bi(3) atom to form OAg2Bi2 tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, corners with two equivalent O(15)Ag3Bi tetrahedra, and  an edgeedge with one O(8)Ag2Bi2 tetrahedra. In the eleventh O site, O(11) is bonded to one Mg(1), one Ag(8), one Ag(9), and one Bi(4) atom to form corner-sharing OMgAg2Bi tetrahedra. In the twelfth O site, O(12) is bonded to one Ag(10), one Ag(14), one Ag(7), and one Bi(3) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(15)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra, and corners with two equivalent O(2)Ag3Bi tetrahedra. In the thirteenth O site, O(13) is bonded to one Ag(11), one Ag(13), one Ag(6), and one Bi(2) atom to form corner-sharing OAg3Bi tetrahedra. In the fourteenth O site, O(14) is bonded to one Ag(12), one Ag(14), one Ag(5), and one Bi(1) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(5)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, and corners with two equivalent O(4)Ag3Bi tetrahedra. In the fifteenth O site, O(15) is bonded to one Ag(18), one Ag(20), one Ag(7), and one Bi(4) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(11)MgAg2Bi tetrahedra, and corners with two equivalent O(10)Ag2Bi2 tetrahedra. In the sixteenth O site, O(16) is bonded to one Ag(1), one Ag(17), one Ag(8), and one Bi(3) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra, and  a cornercorner with one O(11)MgAg2Bi tetrahedra. is represented by the CIF card [CIF]
data_MgAg20(BiO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.090
_cell_length_b   8.999
_cell_length_c   13.504
_cell_angle_alpha   84.879
_cell_angle_beta   86.063
_cell_angle_gamma   85.798
_symmetry_Int_Tables_number   1
_cell_volume   733.685
_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
  Mg  Mg0  1  0.751  0.051  0.037  1.0
  Ag  Ag1  1  0.214  0.744  0.124  1.0
  Ag  Ag2  1  0.735  0.753  0.620  1.0
  Ag  Ag3  1  0.006  0.503  0.999  1.0
  Ag  Ag4  1  0.503  0.003  0.501  1.0
  Ag  Ag5  1  0.003  0.129  0.646  1.0
  Ag  Ag6  1  0.421  0.600  0.822  1.0
  Ag  Ag7  1  0.016  0.877  0.355  1.0
  Ag  Ag8  1  0.582  0.390  0.175  1.0
  Ag  Ag9  1  0.590  0.020  0.270  1.0
  Ag  Ag10  1  1.000  0.514  0.255  1.0
  Ag  Ag11  1  0.432  0.983  0.737  1.0
  Ag  Ag12  1  0.011  0.495  0.742  1.0
  Ag  Ag13  1  0.406  0.952  0.970  1.0
  Ag  Ag14  1  0.004  0.504  0.498  1.0
  Ag  Ag15  1  0.265  0.247  0.879  1.0
  Ag  Ag16  1  0.226  0.759  0.619  1.0
  Ag  Ag17  1  0.706  0.733  0.118  1.0
  Ag  Ag18  1  0.792  0.250  0.378  1.0
  Ag  Ag19  1  0.757  0.284  0.874  1.0
  Ag  Ag20  1  0.282  0.255  0.377  1.0
  Bi  Bi21  1  0.508  0.365  0.614  1.0
  Bi  Bi22  1  0.930  0.850  0.857  1.0
  Bi  Bi23  1  0.502  0.641  0.383  1.0
  Bi  Bi24  1  0.115  0.159  0.142  1.0
  O  O25  1  0.146  0.392  0.132  1.0
  O  O26  1  0.417  0.884  0.381  1.0
  O  O27  1  0.873  0.619  0.867  1.0
  O  O28  1  0.590  0.122  0.621  1.0
  O  O29  1  0.955  0.883  0.687  1.0
  O  O30  1  0.500  0.375  0.785  1.0
  O  O31  1  0.985  0.179  0.975  1.0
  O  O32  1  0.500  0.635  0.555  1.0
  O  O33  1  0.955  0.862  0.040  1.0
  O  O34  1  0.516  0.374  0.440  1.0
  O  O35  1  0.744  0.166  0.156  1.0
  O  O36  1  0.863  0.651  0.376  1.0
  O  O37  1  0.286  0.820  0.847  1.0
  O  O38  1  0.146  0.356  0.620  1.0
  O  O39  1  0.064  0.125  0.311  1.0
  O  O40  1  0.465  0.617  0.210  1.0
[/CIF]
.
The structure described by MgAg20(BiO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 3-coordinate geometry to one Ag(13), one O(11), one O(7), and one O(9) atom. There are twenty inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to one O(16) and one O(9) atom. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(5) and one O(8) atom. In the third Ag site, Ag(3) is bonded in a linear geometry to one O(1) and one O(3) atom. In the fourth Ag site, Ag(4) is bonded in a linear geometry to one O(2) and one O(4) atom. In the fifth Ag site, Ag(5) is bonded in a 3-coordinate geometry to one O(14), one O(4), and one O(5) atom. In the sixth Ag site, Ag(6) is bonded in a linear geometry to one O(13) and one O(6) atom. In the seventh Ag site, Ag(7) is bonded in a 3-coordinate geometry to one O(12), one O(15), and one O(2) atom. In the eighth Ag site, Ag(8) is bonded in a 2-coordinate geometry to one O(1), one O(11), and one O(16) atom. In the ninth Ag site, Ag(9) is bonded in a linear geometry to one O(11) and one O(2) atom. In the tenth Ag site, Ag(10) is bonded in a linear geometry to one O(1) and one O(12) atom. In the eleventh Ag site, Ag(11) is bonded in a linear geometry to one O(13) and one O(4) atom. In the twelfth Ag site, Ag(12) is bonded in a linear geometry to one O(14) and one O(3) atom. In the thirteenth Ag site, Ag(13) is bonded in a distorted bent 150 degrees geometry to one Mg(1) and one O(13) atom. In the fourteenth Ag site, Ag(14) is bonded in a linear geometry to one O(12) and one O(14) atom. In the fifteenth Ag site, Ag(15) is bonded in a linear geometry to one O(6) and one O(7) atom. In the sixteenth Ag site, Ag(16) is bonded in a linear geometry to one O(5) and one O(8) atom. In the seventeenth Ag site, Ag(17) is bonded in a linear geometry to one O(16) and one O(9) atom. In the eighteenth Ag site, Ag(18) is bonded in a linear geometry to one O(10) and one O(15) atom. In the nineteenth Ag site, Ag(19) is bonded in a linear geometry to one O(6) and one O(7) atom. In the twentieth Ag site, Ag(20) is bonded in a linear geometry to one O(10) and one O(15) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(14), one O(4), one O(6), and one O(8) atom to form edge-sharing BiO5 square pyramids. In the second Bi site, Bi(2) is bonded in a distorted rectangular see-saw-like geometry to one O(13), one O(3), one O(5), and one O(9) atom. In the third Bi site, Bi(3) is bonded to one O(10), one O(12), one O(16), one O(2), and one O(8) atom to form edge-sharing BiO5 square pyramids. In the fourth Bi site, Bi(4) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(15), and one O(7) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ag(10), one Ag(3), one Ag(8), and one Bi(4) atom. In the second O site, O(2) is bonded to one Ag(4), one Ag(7), one Ag(9), and one Bi(3) atom to form distorted OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(15)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(11)MgAg2Bi tetrahedra, and corners with two equivalent O(12)Ag3Bi tetrahedra. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Ag(12), one Ag(3), and one Bi(2) atom. In the fourth O site, O(4) is bonded to one Ag(11), one Ag(4), one Ag(5), and one Bi(1) atom to form distorted OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(5)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, and corners with two equivalent O(14)Ag3Bi tetrahedra. In the fifth O site, O(5) is bonded to one Ag(16), one Ag(2), one Ag(5), and one Bi(2) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra, and corners with two equivalent O(8)Ag2Bi2 tetrahedra. In the sixth O site, O(6) is bonded to one Ag(15), one Ag(19), one Ag(6), and one Bi(1) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(13)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra, and  a cornercorner with one O(4)Ag3Bi tetrahedra. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ag(15), one Ag(19), and one Bi(4) atom. In the eighth O site, O(8) is bonded to one Ag(16), one Ag(2), one Bi(1), and one Bi(3) atom to form OAg2Bi2 tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, corners with two equivalent O(5)Ag3Bi tetrahedra, and  an edgeedge with one O(10)Ag2Bi2 tetrahedra. In the ninth O site, O(9) is bonded in a distorted see-saw-like geometry to one Mg(1), one Ag(1), one Ag(17), and one Bi(2) atom. In the tenth O site, O(10) is bonded to one Ag(18), one Ag(20), one Bi(1), and one Bi(3) atom to form OAg2Bi2 tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(4)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, corners with two equivalent O(15)Ag3Bi tetrahedra, and  an edgeedge with one O(8)Ag2Bi2 tetrahedra. In the eleventh O site, O(11) is bonded to one Mg(1), one Ag(8), one Ag(9), and one Bi(4) atom to form corner-sharing OMgAg2Bi tetrahedra. In the twelfth O site, O(12) is bonded to one Ag(10), one Ag(14), one Ag(7), and one Bi(3) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(14)Ag3Bi tetrahedra,  a cornercorner with one O(15)Ag3Bi tetrahedra,  a cornercorner with one O(16)Ag3Bi tetrahedra, and corners with two equivalent O(2)Ag3Bi tetrahedra. In the thirteenth O site, O(13) is bonded to one Ag(11), one Ag(13), one Ag(6), and one Bi(2) atom to form corner-sharing OAg3Bi tetrahedra. In the fourteenth O site, O(14) is bonded to one Ag(12), one Ag(14), one Ag(5), and one Bi(1) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(5)Ag3Bi tetrahedra,  a cornercorner with one O(6)Ag3Bi tetrahedra, and corners with two equivalent O(4)Ag3Bi tetrahedra. In the fifteenth O site, O(15) is bonded to one Ag(18), one Ag(20), one Ag(7), and one Bi(4) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra,  a cornercorner with one O(11)MgAg2Bi tetrahedra, and corners with two equivalent O(10)Ag2Bi2 tetrahedra. In the sixteenth O site, O(16) is bonded to one Ag(1), one Ag(17), one Ag(8), and one Bi(3) atom to form OAg3Bi tetrahedra that share  a cornercorner with one O(10)Ag2Bi2 tetrahedra,  a cornercorner with one O(8)Ag2Bi2 tetrahedra,  a cornercorner with one O(12)Ag3Bi tetrahedra,  a cornercorner with one O(2)Ag3Bi tetrahedra, and  a cornercorner with one O(11)MgAg2Bi tetrahedra. is represented by the CIF card [CIF]
data_MgAg20(BiO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.090
_cell_length_b   8.999
_cell_length_c   13.504
_cell_angle_alpha   84.879
_cell_angle_beta   86.063
_cell_angle_gamma   85.798
_symmetry_Int_Tables_number   1
_cell_volume   733.685
_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
  Mg  Mg0  1  0.751  0.051  0.037  1.0
  Ag  Ag1  1  0.214  0.744  0.124  1.0
  Ag  Ag2  1  0.735  0.753  0.620  1.0
  Ag  Ag3  1  0.006  0.503  0.999  1.0
  Ag  Ag4  1  0.503  0.003  0.501  1.0
  Ag  Ag5  1  0.003  0.129  0.646  1.0
  Ag  Ag6  1  0.421  0.600  0.822  1.0
  Ag  Ag7  1  0.016  0.877  0.355  1.0
  Ag  Ag8  1  0.582  0.390  0.175  1.0
  Ag  Ag9  1  0.590  0.020  0.270  1.0
  Ag  Ag10  1  1.000  0.514  0.255  1.0
  Ag  Ag11  1  0.432  0.983  0.737  1.0
  Ag  Ag12  1  0.011  0.495  0.742  1.0
  Ag  Ag13  1  0.406  0.952  0.970  1.0
  Ag  Ag14  1  0.004  0.504  0.498  1.0
  Ag  Ag15  1  0.265  0.247  0.879  1.0
  Ag  Ag16  1  0.226  0.759  0.619  1.0
  Ag  Ag17  1  0.706  0.733  0.118  1.0
  Ag  Ag18  1  0.792  0.250  0.378  1.0
  Ag  Ag19  1  0.757  0.284  0.874  1.0
  Ag  Ag20  1  0.282  0.255  0.377  1.0
  Bi  Bi21  1  0.508  0.365  0.614  1.0
  Bi  Bi22  1  0.930  0.850  0.857  1.0
  Bi  Bi23  1  0.502  0.641  0.383  1.0
  Bi  Bi24  1  0.115  0.159  0.142  1.0
  O  O25  1  0.146  0.392  0.132  1.0
  O  O26  1  0.417  0.884  0.381  1.0
  O  O27  1  0.873  0.619  0.867  1.0
  O  O28  1  0.590  0.122  0.621  1.0
  O  O29  1  0.955  0.883  0.687  1.0
  O  O30  1  0.500  0.375  0.785  1.0
  O  O31  1  0.985  0.179  0.975  1.0
  O  O32  1  0.500  0.635  0.555  1.0
  O  O33  1  0.955  0.862  0.040  1.0
  O  O34  1  0.516  0.374  0.440  1.0
  O  O35  1  0.744  0.166  0.156  1.0
  O  O36  1  0.863  0.651  0.376  1.0
  O  O37  1  0.286  0.820  0.847  1.0
  O  O38  1  0.146  0.356  0.620  1.0
  O  O39  1  0.064  0.125  0.311  1.0
  O  O40  1  0.465  0.617  0.210  1.0
[/CIF]
.