The structure described by Cs3ErO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. In the second Cs site, Cs(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. In the third Cs site, Cs(3) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Er(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing ErO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), two equivalent Cs(3), and one Er(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cs(3) and two equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs3ErO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.484
_cell_length_b   7.484
_cell_length_c   7.567
_cell_angle_alpha   83.926
_cell_angle_beta   96.074
_cell_angle_gamma   64.018
_symmetry_Int_Tables_number   1
_cell_volume   373.345
_cell_formula_units_Z   2
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
  Cs  Cs0  1  0.209  0.209  0.500  1.0
  Cs  Cs1  1  0.262  0.262  0.000  1.0
  Cs  Cs2  1  0.358  0.642  0.649  1.0
  Cs  Cs3  1  0.642  0.358  0.351  1.0
  Cs  Cs4  1  0.738  0.738  0.000  1.0
  Cs  Cs5  1  0.791  0.791  0.500  1.0
  Er  Er6  1  0.171  0.829  0.150  1.0
  Er  Er7  1  0.829  0.171  0.850  1.0
  O  O8  1  0.164  0.566  0.266  1.0
  O  O9  1  0.101  0.899  0.859  1.0
  O  O10  1  0.566  0.164  0.734  1.0
  O  O11  1  0.434  0.836  0.266  1.0
  O  O12  1  0.899  0.101  0.141  1.0
  O  O13  1  0.836  0.434  0.734  1.0
[/CIF]
.
The structure described by Cs3ErO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. In the second Cs site, Cs(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. In the third Cs site, Cs(3) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Er(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing ErO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), two equivalent Cs(3), and one Er(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cs(3) and two equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs3ErO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.484
_cell_length_b   7.484
_cell_length_c   7.567
_cell_angle_alpha   83.926
_cell_angle_beta   96.074
_cell_angle_gamma   64.018
_symmetry_Int_Tables_number   1
_cell_volume   373.345
_cell_formula_units_Z   2
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
  Cs  Cs0  1  0.209  0.209  0.500  1.0
  Cs  Cs1  1  0.262  0.262  0.000  1.0
  Cs  Cs2  1  0.358  0.642  0.649  1.0
  Cs  Cs3  1  0.642  0.358  0.351  1.0
  Cs  Cs4  1  0.738  0.738  0.000  1.0
  Cs  Cs5  1  0.791  0.791  0.500  1.0
  Er  Er6  1  0.171  0.829  0.150  1.0
  Er  Er7  1  0.829  0.171  0.850  1.0
  O  O8  1  0.164  0.566  0.266  1.0
  O  O9  1  0.101  0.899  0.859  1.0
  O  O10  1  0.566  0.164  0.734  1.0
  O  O11  1  0.434  0.836  0.266  1.0
  O  O12  1  0.899  0.101  0.141  1.0
  O  O13  1  0.836  0.434  0.734  1.0
[/CIF]
.