The structure described by Er5Au2Bi crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a distorted trigonal planar geometry to one Au(1) and two equivalent Bi(1) atoms. In the second Er site, Er(2) is bonded in a square co-planar geometry to four equivalent Au(1) atoms. Au(1) is bonded to two equivalent Er(1), two equivalent Er(2), and one Au(1) atom to form distorted corner-sharing AuEr4Au trigonal bipyramids. Bi(1) is bonded in a 8-coordinate geometry to eight equivalent Er(1) atoms. is represented by the CIF card [CIF]
data_Er5BiAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.127
_cell_length_b   10.127
_cell_length_c   10.127
_cell_angle_alpha   137.168
_cell_angle_beta   137.168
_cell_angle_gamma   62.180
_symmetry_Int_Tables_number   1
_cell_volume   474.385
_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
  Er  Er0  1  0.828  0.000  0.500  1.0
  Er  Er1  1  0.328  0.828  0.828  1.0
  Er  Er2  1  0.672  0.172  0.172  1.0
  Er  Er3  1  0.172  1.000  0.500  1.0
  Er  Er4  1  0.500  0.500  0.000  1.0
  Er  Er5  1  1.000  0.500  0.828  1.0
  Er  Er6  1  0.000  0.500  0.172  1.0
  Er  Er7  1  0.500  0.328  0.500  1.0
  Er  Er8  1  0.500  0.672  0.500  1.0
  Er  Er9  1  0.000  0.000  0.000  1.0
  Bi  Bi10  1  0.750  0.750  0.000  1.0
  Bi  Bi11  1  0.250  0.250  0.000  1.0
  Au  Au12  1  0.128  0.628  0.757  1.0
  Au  Au13  1  0.872  0.372  0.243  1.0
  Au  Au14  1  0.628  0.872  0.500  1.0
  Au  Au15  1  0.372  0.128  0.500  1.0
[/CIF]
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The structure described by Er5Au2Bi crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a distorted trigonal planar geometry to one Au(1) and two equivalent Bi(1) atoms. In the second Er site, Er(2) is bonded in a square co-planar geometry to four equivalent Au(1) atoms. Au(1) is bonded to two equivalent Er(1), two equivalent Er(2), and one Au(1) atom to form distorted corner-sharing AuEr4Au trigonal bipyramids. Bi(1) is bonded in a 8-coordinate geometry to eight equivalent Er(1) atoms. is represented by the CIF card [CIF]
data_Er5BiAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.127
_cell_length_b   10.127
_cell_length_c   10.127
_cell_angle_alpha   137.168
_cell_angle_beta   137.168
_cell_angle_gamma   62.180
_symmetry_Int_Tables_number   1
_cell_volume   474.385
_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
  Er  Er0  1  0.828  0.000  0.500  1.0
  Er  Er1  1  0.328  0.828  0.828  1.0
  Er  Er2  1  0.672  0.172  0.172  1.0
  Er  Er3  1  0.172  1.000  0.500  1.0
  Er  Er4  1  0.500  0.500  0.000  1.0
  Er  Er5  1  1.000  0.500  0.828  1.0
  Er  Er6  1  0.000  0.500  0.172  1.0
  Er  Er7  1  0.500  0.328  0.500  1.0
  Er  Er8  1  0.500  0.672  0.500  1.0
  Er  Er9  1  0.000  0.000  0.000  1.0
  Bi  Bi10  1  0.750  0.750  0.000  1.0
  Bi  Bi11  1  0.250  0.250  0.000  1.0
  Au  Au12  1  0.128  0.628  0.757  1.0
  Au  Au13  1  0.872  0.372  0.243  1.0
  Au  Au14  1  0.628  0.872  0.500  1.0
  Au  Au15  1  0.372  0.128  0.500  1.0
[/CIF]
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