The material described by Cu2Zn(BiO4)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(3), one O(5), one O(6), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share corners with three equivalent Bi(2)O4 trigonal pyramids and edges with two equivalent Zn(1)O6 octahedra. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(4), one O(6), and one O(8) atom. Zn(1) is bonded to one O(1), one O(4), one O(7), one O(8), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with three equivalent Bi(2)O4 trigonal pyramids,  an edgeedge with one Zn(1)O6 octahedra, and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. In the second Bi site, Bi(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form distorted BiO4 trigonal pyramids that share corners with three equivalent Zn(1)O6 octahedra and corners with three equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-77°. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a 3-coordinate geometry to one Cu(1), one Zn(1), and one Bi(1) atom. In the second O site, O(8) is bonded in a trigonal non-coplanar geometry to one Cu(2), one Zn(1), and one Bi(2) atom. In the third O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Zn(1), and one Bi(1) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Cu(2) and one Bi(1) atom. In the fifth O site, O(3) is bonded to one Cu(1), two equivalent Zn(1), and one Bi(2) atom to form OZn2CuBi trigonal pyramids that share corners with two equivalent O(6)Cu2Bi2 trigonal pyramids and  an edgeedge with one O(3)Zn2CuBi trigonal pyramid. In the sixth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Cu(2), one Zn(1), and one Bi(1) atom. In the seventh O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one Bi(2) atom. In the eighth O site, O(6) is bonded to one Cu(1), one Cu(2), one Bi(1), and one Bi(2) atom to form distorted corner-sharing OCu2Bi2 trigonal pyramids. is represented by the CIF file [CIF]
data_ZnCu2(BiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.607
_cell_length_b   6.432
_cell_length_c   13.793
_cell_angle_alpha   86.656
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   762.295
_cell_formula_units_Z   4
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
  Zn  Zn0  1  0.852  0.895  0.048  1.0
  Zn  Zn1  1  0.148  0.105  0.952  1.0
  Zn  Zn2  1  0.352  0.105  0.452  1.0
  Zn  Zn3  1  0.648  0.895  0.548  1.0
  Cu  Cu4  1  0.805  0.250  0.890  1.0
  Cu  Cu5  1  0.937  0.644  0.613  1.0
  Cu  Cu6  1  0.063  0.356  0.387  1.0
  Cu  Cu7  1  0.195  0.750  0.110  1.0
  Cu  Cu8  1  0.695  0.250  0.390  1.0
  Cu  Cu9  1  0.563  0.644  0.113  1.0
  Cu  Cu10  1  0.305  0.750  0.610  1.0
  Cu  Cu11  1  0.437  0.356  0.887  1.0
  Bi  Bi12  1  0.559  0.897  0.834  1.0
  Bi  Bi13  1  0.941  0.897  0.334  1.0
  Bi  Bi14  1  0.901  0.370  0.138  1.0
  Bi  Bi15  1  0.059  0.103  0.666  1.0
  Bi  Bi16  1  0.099  0.630  0.862  1.0
  Bi  Bi17  1  0.401  0.630  0.362  1.0
  Bi  Bi18  1  0.599  0.370  0.638  1.0
  Bi  Bi19  1  0.441  0.103  0.166  1.0
  O  O20  1  0.736  0.967  0.408  1.0
  O  O21  1  0.960  0.364  0.594  1.0
  O  O22  1  0.430  0.803  0.496  1.0
  O  O23  1  0.930  0.197  0.004  1.0
  O  O24  1  0.764  0.967  0.908  1.0
  O  O25  1  0.264  0.033  0.592  1.0
  O  O26  1  0.881  0.922  0.609  1.0
  O  O27  1  0.129  0.486  0.143  1.0
  O  O28  1  0.371  0.486  0.643  1.0
  O  O29  1  0.118  0.715  0.681  1.0
  O  O30  1  0.618  0.285  0.819  1.0
  O  O31  1  0.871  0.514  0.857  1.0
  O  O32  1  0.119  0.078  0.391  1.0
  O  O33  1  0.458  0.117  0.314  1.0
  O  O34  1  0.738  0.611  0.565  1.0
  O  O35  1  0.762  0.611  0.065  1.0
  O  O36  1  0.958  0.883  0.186  1.0
  O  O37  1  0.629  0.514  0.357  1.0
  O  O38  1  0.542  0.883  0.686  1.0
  O  O39  1  0.570  0.197  0.504  1.0
  O  O40  1  0.540  0.364  0.094  1.0
  O  O41  1  0.882  0.285  0.319  1.0
  O  O42  1  0.236  0.033  0.092  1.0
  O  O43  1  0.619  0.922  0.109  1.0
  O  O44  1  0.070  0.803  0.996  1.0
  O  O45  1  0.238  0.389  0.935  1.0
  O  O46  1  0.040  0.636  0.406  1.0
  O  O47  1  0.460  0.636  0.906  1.0
  O  O48  1  0.381  0.078  0.891  1.0
  O  O49  1  0.262  0.389  0.435  1.0
  O  O50  1  0.382  0.715  0.181  1.0
  O  O51  1  0.042  0.117  0.814  1.0
[/CIF]
.
The material described by Cu2Zn(BiO4)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(3), one O(5), one O(6), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share corners with three equivalent Bi(2)O4 trigonal pyramids and edges with two equivalent Zn(1)O6 octahedra. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(4), one O(6), and one O(8) atom. Zn(1) is bonded to one O(1), one O(4), one O(7), one O(8), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with three equivalent Bi(2)O4 trigonal pyramids,  an edgeedge with one Zn(1)O6 octahedra, and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. In the second Bi site, Bi(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form distorted BiO4 trigonal pyramids that share corners with three equivalent Zn(1)O6 octahedra and corners with three equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-77°. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a 3-coordinate geometry to one Cu(1), one Zn(1), and one Bi(1) atom. In the second O site, O(8) is bonded in a trigonal non-coplanar geometry to one Cu(2), one Zn(1), and one Bi(2) atom. In the third O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Zn(1), and one Bi(1) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Cu(2) and one Bi(1) atom. In the fifth O site, O(3) is bonded to one Cu(1), two equivalent Zn(1), and one Bi(2) atom to form OZn2CuBi trigonal pyramids that share corners with two equivalent O(6)Cu2Bi2 trigonal pyramids and  an edgeedge with one O(3)Zn2CuBi trigonal pyramid. In the sixth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Cu(2), one Zn(1), and one Bi(1) atom. In the seventh O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one Bi(2) atom. In the eighth O site, O(6) is bonded to one Cu(1), one Cu(2), one Bi(1), and one Bi(2) atom to form distorted corner-sharing OCu2Bi2 trigonal pyramids. is represented by the CIF file [CIF]
data_ZnCu2(BiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.607
_cell_length_b   6.432
_cell_length_c   13.793
_cell_angle_alpha   86.656
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   762.295
_cell_formula_units_Z   4
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
  Zn  Zn0  1  0.852  0.895  0.048  1.0
  Zn  Zn1  1  0.148  0.105  0.952  1.0
  Zn  Zn2  1  0.352  0.105  0.452  1.0
  Zn  Zn3  1  0.648  0.895  0.548  1.0
  Cu  Cu4  1  0.805  0.250  0.890  1.0
  Cu  Cu5  1  0.937  0.644  0.613  1.0
  Cu  Cu6  1  0.063  0.356  0.387  1.0
  Cu  Cu7  1  0.195  0.750  0.110  1.0
  Cu  Cu8  1  0.695  0.250  0.390  1.0
  Cu  Cu9  1  0.563  0.644  0.113  1.0
  Cu  Cu10  1  0.305  0.750  0.610  1.0
  Cu  Cu11  1  0.437  0.356  0.887  1.0
  Bi  Bi12  1  0.559  0.897  0.834  1.0
  Bi  Bi13  1  0.941  0.897  0.334  1.0
  Bi  Bi14  1  0.901  0.370  0.138  1.0
  Bi  Bi15  1  0.059  0.103  0.666  1.0
  Bi  Bi16  1  0.099  0.630  0.862  1.0
  Bi  Bi17  1  0.401  0.630  0.362  1.0
  Bi  Bi18  1  0.599  0.370  0.638  1.0
  Bi  Bi19  1  0.441  0.103  0.166  1.0
  O  O20  1  0.736  0.967  0.408  1.0
  O  O21  1  0.960  0.364  0.594  1.0
  O  O22  1  0.430  0.803  0.496  1.0
  O  O23  1  0.930  0.197  0.004  1.0
  O  O24  1  0.764  0.967  0.908  1.0
  O  O25  1  0.264  0.033  0.592  1.0
  O  O26  1  0.881  0.922  0.609  1.0
  O  O27  1  0.129  0.486  0.143  1.0
  O  O28  1  0.371  0.486  0.643  1.0
  O  O29  1  0.118  0.715  0.681  1.0
  O  O30  1  0.618  0.285  0.819  1.0
  O  O31  1  0.871  0.514  0.857  1.0
  O  O32  1  0.119  0.078  0.391  1.0
  O  O33  1  0.458  0.117  0.314  1.0
  O  O34  1  0.738  0.611  0.565  1.0
  O  O35  1  0.762  0.611  0.065  1.0
  O  O36  1  0.958  0.883  0.186  1.0
  O  O37  1  0.629  0.514  0.357  1.0
  O  O38  1  0.542  0.883  0.686  1.0
  O  O39  1  0.570  0.197  0.504  1.0
  O  O40  1  0.540  0.364  0.094  1.0
  O  O41  1  0.882  0.285  0.319  1.0
  O  O42  1  0.236  0.033  0.092  1.0
  O  O43  1  0.619  0.922  0.109  1.0
  O  O44  1  0.070  0.803  0.996  1.0
  O  O45  1  0.238  0.389  0.935  1.0
  O  O46  1  0.040  0.636  0.406  1.0
  O  O47  1  0.460  0.636  0.906  1.0
  O  O48  1  0.381  0.078  0.891  1.0
  O  O49  1  0.262  0.389  0.435  1.0
  O  O50  1  0.382  0.715  0.181  1.0
  O  O51  1  0.042  0.117  0.814  1.0
[/CIF]
.