The material structure described by BaEr2CoO5 crystallizes in the orthorhombic Immm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(2) and eight equivalent O(1) atoms. Er(1) is bonded in a 7-coordinate geometry to one O(2) and six equivalent O(1) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), three equivalent Er(1), and one Co(1) atom. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent Er(1), and two equivalent Co(1) atoms to form distorted corner-sharing OBa2Er2Co2 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaEr2CoO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.659
_cell_length_b   5.715
_cell_length_c   6.667
_cell_angle_alpha   115.366
_cell_angle_beta   105.912
_cell_angle_gamma   89.994
_symmetry_Int_Tables_number   1
_cell_volume   120.033
_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  1.000  0.000  1.000  1.0
  Er  Er1  1  0.795  0.295  0.590  1.0
  Er  Er2  1  0.205  0.705  0.410  1.0
  Co  Co3  1  0.500  0.500  0.000  1.0
  O  O4  1  0.347  0.588  0.694  1.0
  O  O5  1  0.653  0.412  0.306  1.0
  O  O6  1  0.653  0.895  0.306  1.0
  O  O7  1  0.347  0.105  0.694  1.0
  O  O8  1  0.000  0.500  1.000  1.0
[/CIF]
.
The material structure described by BaEr2CoO5 crystallizes in the orthorhombic Immm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(2) and eight equivalent O(1) atoms. Er(1) is bonded in a 7-coordinate geometry to one O(2) and six equivalent O(1) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), three equivalent Er(1), and one Co(1) atom. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent Er(1), and two equivalent Co(1) atoms to form distorted corner-sharing OBa2Er2Co2 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaEr2CoO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.659
_cell_length_b   5.715
_cell_length_c   6.667
_cell_angle_alpha   115.366
_cell_angle_beta   105.912
_cell_angle_gamma   89.994
_symmetry_Int_Tables_number   1
_cell_volume   120.033
_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  1.000  0.000  1.000  1.0
  Er  Er1  1  0.795  0.295  0.590  1.0
  Er  Er2  1  0.205  0.705  0.410  1.0
  Co  Co3  1  0.500  0.500  0.000  1.0
  O  O4  1  0.347  0.588  0.694  1.0
  O  O5  1  0.653  0.412  0.306  1.0
  O  O6  1  0.653  0.895  0.306  1.0
  O  O7  1  0.347  0.105  0.694  1.0
  O  O8  1  0.000  0.500  1.000  1.0
[/CIF]
.