The structure described by Er12Co5Bi crystallizes in the orthorhombic Immm space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), two equivalent Co(2), and one Bi(1) atom. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Bi(1) atom. In the third Er site, Er(3) is bonded in a 2-coordinate geometry to one Co(1), one Co(2), one Co(3), and one Bi(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(3), four equivalent Er(2), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Er(2), two equivalent Er(3), four equivalent Er(1), and one Co(2) atom. In the third Co site, Co(3) is bonded in a distorted body-centered cubic geometry to four equivalent Er(1) and four equivalent Er(3) atoms. Bi(1) is bonded in a cuboctahedral geometry to four equivalent Er(1), four equivalent Er(2), and four equivalent Er(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er12Co5Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.208
_cell_length_b   8.208
_cell_length_c   8.208
_cell_angle_alpha   110.433
_cell_angle_beta   111.115
_cell_angle_gamma   106.897
_symmetry_Int_Tables_number   1
_cell_volume   425.011
_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  0.286  0.182  0.467  1.0
  Er  Er1  1  0.714  0.818  0.533  1.0
  Er  Er2  1  0.286  0.818  0.104  1.0
  Er  Er3  1  0.714  0.182  0.896  1.0
  Er  Er4  1  0.618  0.310  0.308  1.0
  Er  Er5  1  0.382  0.690  0.692  1.0
  Er  Er6  1  0.002  0.310  0.692  1.0
  Er  Er7  1  0.998  0.690  0.308  1.0
  Er  Er8  1  0.210  0.408  0.198  1.0
  Er  Er9  1  0.790  0.592  0.802  1.0
  Er  Er10  1  0.210  0.012  0.802  1.0
  Er  Er11  1  0.790  0.988  0.198  1.0
  Co  Co12  1  1.000  0.380  0.380  1.0
  Co  Co13  1  1.000  0.620  0.620  1.0
  Co  Co14  1  0.390  0.890  0.500  1.0
  Co  Co15  1  0.610  0.110  0.500  1.0
  Co  Co16  1  1.000  1.000  0.000  1.0
  Bi  Bi17  1  0.500  0.500  1.000  1.0
[/CIF]
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The structure described by Er12Co5Bi crystallizes in the orthorhombic Immm space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), two equivalent Co(2), and one Bi(1) atom. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Bi(1) atom. In the third Er site, Er(3) is bonded in a 2-coordinate geometry to one Co(1), one Co(2), one Co(3), and one Bi(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(3), four equivalent Er(2), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Er(2), two equivalent Er(3), four equivalent Er(1), and one Co(2) atom. In the third Co site, Co(3) is bonded in a distorted body-centered cubic geometry to four equivalent Er(1) and four equivalent Er(3) atoms. Bi(1) is bonded in a cuboctahedral geometry to four equivalent Er(1), four equivalent Er(2), and four equivalent Er(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er12Co5Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.208
_cell_length_b   8.208
_cell_length_c   8.208
_cell_angle_alpha   110.433
_cell_angle_beta   111.115
_cell_angle_gamma   106.897
_symmetry_Int_Tables_number   1
_cell_volume   425.011
_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  0.286  0.182  0.467  1.0
  Er  Er1  1  0.714  0.818  0.533  1.0
  Er  Er2  1  0.286  0.818  0.104  1.0
  Er  Er3  1  0.714  0.182  0.896  1.0
  Er  Er4  1  0.618  0.310  0.308  1.0
  Er  Er5  1  0.382  0.690  0.692  1.0
  Er  Er6  1  0.002  0.310  0.692  1.0
  Er  Er7  1  0.998  0.690  0.308  1.0
  Er  Er8  1  0.210  0.408  0.198  1.0
  Er  Er9  1  0.790  0.592  0.802  1.0
  Er  Er10  1  0.210  0.012  0.802  1.0
  Er  Er11  1  0.790  0.988  0.198  1.0
  Co  Co12  1  1.000  0.380  0.380  1.0
  Co  Co13  1  1.000  0.620  0.620  1.0
  Co  Co14  1  0.390  0.890  0.500  1.0
  Co  Co15  1  0.610  0.110  0.500  1.0
  Co  Co16  1  1.000  1.000  0.000  1.0
  Bi  Bi17  1  0.500  0.500  1.000  1.0
[/CIF]
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