The crystal structure described by Er2Mg crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a body-centered cubic geometry to eight equivalent Er(1) atoms. Er(1) is bonded to four equivalent Mg(1) and eight equivalent Er(1) atoms to form a mixture of distorted edge, face, and corner-sharing ErEr8Mg4 cuboctahedra. is represented by the CIF file [CIF]
data_Er2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.577
_cell_length_b   3.577
_cell_length_c   7.091
_cell_angle_alpha   104.609
_cell_angle_beta   104.609
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   84.751
_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  0.661  0.661  0.321  1.0
  Er  Er1  1  0.339  0.339  0.679  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
[/CIF]
.
The crystal structure described by Er2Mg crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a body-centered cubic geometry to eight equivalent Er(1) atoms. Er(1) is bonded to four equivalent Mg(1) and eight equivalent Er(1) atoms to form a mixture of distorted edge, face, and corner-sharing ErEr8Mg4 cuboctahedra. is represented by the CIF file [CIF]
data_Er2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.577
_cell_length_b   3.577
_cell_length_c   7.091
_cell_angle_alpha   104.609
_cell_angle_beta   104.609
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   84.751
_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  0.661  0.661  0.321  1.0
  Er  Er1  1  0.339  0.339  0.679  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
[/CIF]
.