The structure described by Er is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are five inequivalent Er sites. In the first Er site, Er(1) is bonded to six equivalent Er(1) and six Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the second Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the third Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the fourth Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the fifth Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. is represented by the CIF card [CIF]
data_Er
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.548
_cell_length_b   3.548
_cell_length_c   8.743
_cell_angle_alpha   90.000
_cell_angle_beta   78.282
_cell_angle_gamma   119.999
_symmetry_Int_Tables_number   1
_cell_volume   92.665
_cell_formula_units_Z   3
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  0.000  0.000  1.000  1.0
  Er  Er1  1  0.444  0.222  0.334  1.0
  Er  Er2  1  0.556  0.778  0.666  1.0
[/CIF]
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The structure described by Er is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are five inequivalent Er sites. In the first Er site, Er(1) is bonded to six equivalent Er(1) and six Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the second Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the third Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the fourth Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. In the fifth Er site, Er(2) is bonded to three equivalent Er(1) and nine Er(2,2) atoms to form a mixture of face, corner, and edge-sharing ErEr12 cuboctahedra. is represented by the CIF card [CIF]
data_Er
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.548
_cell_length_b   3.548
_cell_length_c   8.743
_cell_angle_alpha   90.000
_cell_angle_beta   78.282
_cell_angle_gamma   119.999
_symmetry_Int_Tables_number   1
_cell_volume   92.665
_cell_formula_units_Z   3
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  0.000  0.000  1.000  1.0
  Er  Er1  1  0.444  0.222  0.334  1.0
  Er  Er2  1  0.556  0.778  0.666  1.0
[/CIF]
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