The structure described by MgEu2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a body-centered cubic geometry to two equivalent Eu(2) and six equivalent Eu(1) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) and four equivalent Eu(2) atoms. In the second Eu site, Eu(2) is bonded to two equivalent Mg(1), four equivalent Eu(1), and six equivalent Eu(2) atoms to form a mixture of distorted edge, face, and corner-sharing EuEu10Mg2 cuboctahedra. is represented by the CIF file [CIF]
data_Eu2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.524
_cell_length_b   9.524
_cell_length_c   5.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.540
_symmetry_Int_Tables_number   1
_cell_volume   216.584
_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
  Eu  Eu0  1  0.092  0.908  0.250  1.0
  Eu  Eu1  1  0.782  0.218  0.250  1.0
  Eu  Eu2  1  0.908  0.092  0.750  1.0
  Eu  Eu3  1  0.218  0.782  0.750  1.0
  Mg  Mg4  1  0.438  0.562  0.250  1.0
  Mg  Mg5  1  0.562  0.438  0.750  1.0
[/CIF]
.
The structure described by MgEu2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a body-centered cubic geometry to two equivalent Eu(2) and six equivalent Eu(1) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) and four equivalent Eu(2) atoms. In the second Eu site, Eu(2) is bonded to two equivalent Mg(1), four equivalent Eu(1), and six equivalent Eu(2) atoms to form a mixture of distorted edge, face, and corner-sharing EuEu10Mg2 cuboctahedra. is represented by the CIF file [CIF]
data_Eu2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.524
_cell_length_b   9.524
_cell_length_c   5.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.540
_symmetry_Int_Tables_number   1
_cell_volume   216.584
_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
  Eu  Eu0  1  0.092  0.908  0.250  1.0
  Eu  Eu1  1  0.782  0.218  0.250  1.0
  Eu  Eu2  1  0.908  0.092  0.750  1.0
  Eu  Eu3  1  0.218  0.782  0.750  1.0
  Mg  Mg4  1  0.438  0.562  0.250  1.0
  Mg  Mg5  1  0.562  0.438  0.750  1.0
[/CIF]
.