The compound described by Er4NiCd crystallizes in the cubic F-43m space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 3-coordinate geometry to three equivalent Ni(1) and three equivalent Cd(1) atoms. In the second Er site, Er(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Ni(1) and two equivalent Cd(1) atoms. In the third Er site, Er(3) is bonded in a 4-coordinate geometry to two equivalent Ni(1) and two equivalent Cd(1) atoms. Ni(1) is bonded in a 6-coordinate geometry to three equivalent Er(1), three equivalent Er(2), and three equivalent Er(3) atoms. Cd(1) is bonded to three equivalent Er(1), three equivalent Er(2), three equivalent Er(3), and three equivalent Cd(1) atoms to form a mixture of distorted face and corner-sharing CdEr9Cd3 cuboctahedra. is represented by the CIF file [CIF]
data_Er4CdNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.399
_cell_length_b   9.399
_cell_length_c   9.399
_cell_angle_alpha   60.001
_cell_angle_beta   60.002
_cell_angle_gamma   60.001
_symmetry_Int_Tables_number   1
_cell_volume   587.112
_cell_formula_units_Z   4
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  0.349  0.349  0.349  1.0
  Er  Er1  1  0.349  0.349  0.954  1.0
  Er  Er2  1  0.349  0.954  0.349  1.0
  Er  Er3  1  0.954  0.349  0.349  1.0
  Er  Er4  1  0.811  0.189  0.189  1.0
  Er  Er5  1  0.189  0.811  0.811  1.0
  Er  Er6  1  0.189  0.811  0.189  1.0
  Er  Er7  1  0.811  0.189  0.811  1.0
  Er  Er8  1  0.189  0.189  0.811  1.0
  Er  Er9  1  0.811  0.811  0.189  1.0
  Er  Er10  1  0.937  0.563  0.563  1.0
  Er  Er11  1  0.563  0.937  0.937  1.0
  Er  Er12  1  0.563  0.937  0.563  1.0
  Er  Er13  1  0.937  0.563  0.937  1.0
  Er  Er14  1  0.563  0.563  0.937  1.0
  Er  Er15  1  0.937  0.937  0.563  1.0
  Cd  Cd16  1  0.581  0.581  0.581  1.0
  Cd  Cd17  1  0.581  0.581  0.257  1.0
  Cd  Cd18  1  0.581  0.257  0.581  1.0
  Cd  Cd19  1  0.257  0.581  0.581  1.0
  Ni  Ni20  1  0.142  0.142  0.142  1.0
  Ni  Ni21  1  0.142  0.142  0.573  1.0
  Ni  Ni22  1  0.142  0.573  0.142  1.0
  Ni  Ni23  1  0.573  0.142  0.142  1.0
[/CIF]
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The compound described by Er4NiCd crystallizes in the cubic F-43m space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 3-coordinate geometry to three equivalent Ni(1) and three equivalent Cd(1) atoms. In the second Er site, Er(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Ni(1) and two equivalent Cd(1) atoms. In the third Er site, Er(3) is bonded in a 4-coordinate geometry to two equivalent Ni(1) and two equivalent Cd(1) atoms. Ni(1) is bonded in a 6-coordinate geometry to three equivalent Er(1), three equivalent Er(2), and three equivalent Er(3) atoms. Cd(1) is bonded to three equivalent Er(1), three equivalent Er(2), three equivalent Er(3), and three equivalent Cd(1) atoms to form a mixture of distorted face and corner-sharing CdEr9Cd3 cuboctahedra. is represented by the CIF file [CIF]
data_Er4CdNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.399
_cell_length_b   9.399
_cell_length_c   9.399
_cell_angle_alpha   60.001
_cell_angle_beta   60.002
_cell_angle_gamma   60.001
_symmetry_Int_Tables_number   1
_cell_volume   587.112
_cell_formula_units_Z   4
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  0.349  0.349  0.349  1.0
  Er  Er1  1  0.349  0.349  0.954  1.0
  Er  Er2  1  0.349  0.954  0.349  1.0
  Er  Er3  1  0.954  0.349  0.349  1.0
  Er  Er4  1  0.811  0.189  0.189  1.0
  Er  Er5  1  0.189  0.811  0.811  1.0
  Er  Er6  1  0.189  0.811  0.189  1.0
  Er  Er7  1  0.811  0.189  0.811  1.0
  Er  Er8  1  0.189  0.189  0.811  1.0
  Er  Er9  1  0.811  0.811  0.189  1.0
  Er  Er10  1  0.937  0.563  0.563  1.0
  Er  Er11  1  0.563  0.937  0.937  1.0
  Er  Er12  1  0.563  0.937  0.563  1.0
  Er  Er13  1  0.937  0.563  0.937  1.0
  Er  Er14  1  0.563  0.563  0.937  1.0
  Er  Er15  1  0.937  0.937  0.563  1.0
  Cd  Cd16  1  0.581  0.581  0.581  1.0
  Cd  Cd17  1  0.581  0.581  0.257  1.0
  Cd  Cd18  1  0.581  0.257  0.581  1.0
  Cd  Cd19  1  0.257  0.581  0.581  1.0
  Ni  Ni20  1  0.142  0.142  0.142  1.0
  Ni  Ni21  1  0.142  0.142  0.573  1.0
  Ni  Ni22  1  0.142  0.573  0.142  1.0
  Ni  Ni23  1  0.573  0.142  0.142  1.0
[/CIF]
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