The material described by Er(Bi3O5)4 crystallizes in the cubic I23 space group. Er(1) is bonded to four equivalent O(3) atoms to form ErO4 tetrahedra that share corners with twelve equivalent Bi(1)O5 square pyramids. Bi(1) is bonded to one O(2), one O(3), and three equivalent O(1) atoms to form distorted BiO5 square pyramids that share corners with eight equivalent Bi(1)O5 square pyramids,  a cornercorner with one Er(1)O4 tetrahedra, and  an edgeedge with one Bi(1)O5 square pyramid. There are three inequivalent O sites. In the first O site, O(3) is bonded to one Er(1) and three equivalent Bi(1) atoms to form corner-sharing OErBi3 tetrahedra. In the second O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Bi(1) atoms. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to three equivalent Bi(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er(Bi3O5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.804
_cell_length_b   8.804
_cell_length_c   8.804
_cell_angle_alpha   109.469
_cell_angle_beta   109.472
_cell_angle_gamma   109.472
_symmetry_Int_Tables_number   1
_cell_volume   525.270
_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
  Er  Er0  1  0.000  1.000  1.000  1.0
  Bi  Bi1  1  0.855  0.678  0.170  1.0
  Bi  Bi2  1  0.315  0.823  0.145  1.0
  Bi  Bi3  1  0.492  0.322  0.177  1.0
  Bi  Bi4  1  0.823  0.145  0.315  1.0
  Bi  Bi5  1  0.685  0.830  0.509  1.0
  Bi  Bi6  1  0.177  0.491  0.322  1.0
  Bi  Bi7  1  0.830  0.509  0.685  1.0
  Bi  Bi8  1  0.322  0.177  0.491  1.0
  Bi  Bi9  1  0.170  0.855  0.678  1.0
  Bi  Bi10  1  0.509  0.685  0.830  1.0
  Bi  Bi11  1  0.678  0.170  0.855  1.0
  Bi  Bi12  1  0.145  0.315  0.823  1.0
  O  O13  1  0.764  0.381  0.116  1.0
  O  O14  1  0.648  0.884  0.265  1.0
  O  O15  1  0.000  0.661  0.000  1.0
  O  O16  1  0.661  0.000  0.000  1.0
  O  O17  1  0.352  0.616  0.236  1.0
  O  O18  1  0.735  0.619  0.384  1.0
  O  O19  1  1.000  0.244  0.000  1.0
  O  O20  1  0.244  1.000  1.000  1.0
  O  O21  1  0.616  0.236  0.352  1.0
  O  O22  1  0.116  0.764  0.381  1.0
  O  O23  1  0.339  0.339  0.339  1.0
  O  O24  1  1.000  1.000  0.244  1.0
  O  O25  1  0.384  0.735  0.619  1.0
  O  O26  1  0.884  0.265  0.648  1.0
  O  O27  1  0.756  0.756  0.756  1.0
  O  O28  1  0.619  0.384  0.735  1.0
  O  O29  1  0.236  0.352  0.616  1.0
  O  O30  1  0.265  0.648  0.884  1.0
  O  O31  1  0.381  0.116  0.764  1.0
  O  O32  1  1.000  0.000  0.661  1.0
[/CIF]
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The material described by Er(Bi3O5)4 crystallizes in the cubic I23 space group. Er(1) is bonded to four equivalent O(3) atoms to form ErO4 tetrahedra that share corners with twelve equivalent Bi(1)O5 square pyramids. Bi(1) is bonded to one O(2), one O(3), and three equivalent O(1) atoms to form distorted BiO5 square pyramids that share corners with eight equivalent Bi(1)O5 square pyramids,  a cornercorner with one Er(1)O4 tetrahedra, and  an edgeedge with one Bi(1)O5 square pyramid. There are three inequivalent O sites. In the first O site, O(3) is bonded to one Er(1) and three equivalent Bi(1) atoms to form corner-sharing OErBi3 tetrahedra. In the second O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Bi(1) atoms. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to three equivalent Bi(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er(Bi3O5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.804
_cell_length_b   8.804
_cell_length_c   8.804
_cell_angle_alpha   109.469
_cell_angle_beta   109.472
_cell_angle_gamma   109.472
_symmetry_Int_Tables_number   1
_cell_volume   525.270
_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
  Er  Er0  1  0.000  1.000  1.000  1.0
  Bi  Bi1  1  0.855  0.678  0.170  1.0
  Bi  Bi2  1  0.315  0.823  0.145  1.0
  Bi  Bi3  1  0.492  0.322  0.177  1.0
  Bi  Bi4  1  0.823  0.145  0.315  1.0
  Bi  Bi5  1  0.685  0.830  0.509  1.0
  Bi  Bi6  1  0.177  0.491  0.322  1.0
  Bi  Bi7  1  0.830  0.509  0.685  1.0
  Bi  Bi8  1  0.322  0.177  0.491  1.0
  Bi  Bi9  1  0.170  0.855  0.678  1.0
  Bi  Bi10  1  0.509  0.685  0.830  1.0
  Bi  Bi11  1  0.678  0.170  0.855  1.0
  Bi  Bi12  1  0.145  0.315  0.823  1.0
  O  O13  1  0.764  0.381  0.116  1.0
  O  O14  1  0.648  0.884  0.265  1.0
  O  O15  1  0.000  0.661  0.000  1.0
  O  O16  1  0.661  0.000  0.000  1.0
  O  O17  1  0.352  0.616  0.236  1.0
  O  O18  1  0.735  0.619  0.384  1.0
  O  O19  1  1.000  0.244  0.000  1.0
  O  O20  1  0.244  1.000  1.000  1.0
  O  O21  1  0.616  0.236  0.352  1.0
  O  O22  1  0.116  0.764  0.381  1.0
  O  O23  1  0.339  0.339  0.339  1.0
  O  O24  1  1.000  1.000  0.244  1.0
  O  O25  1  0.384  0.735  0.619  1.0
  O  O26  1  0.884  0.265  0.648  1.0
  O  O27  1  0.756  0.756  0.756  1.0
  O  O28  1  0.619  0.384  0.735  1.0
  O  O29  1  0.236  0.352  0.616  1.0
  O  O30  1  0.265  0.648  0.884  1.0
  O  O31  1  0.381  0.116  0.764  1.0
  O  O32  1  1.000  0.000  0.661  1.0
[/CIF]
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