The structure described by Mg2EuFe crystallizes in the trigonal P-3m1 space group. Mg(1) is bonded in a distorted trigonal planar geometry to three equivalent Fe(1) atoms. Eu(1) is bonded in a linear geometry to two equivalent Fe(1) atoms. Fe(1) is bonded to six equivalent Mg(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing FeEu2Mg6 hexagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuMg2Fe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.842
_cell_length_b   4.842
_cell_length_c   5.138
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   104.308
_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
  Eu  Eu0  1  0.000  0.000  0.500  1.0
  Mg  Mg1  1  0.667  0.333  0.978  1.0
  Mg  Mg2  1  0.333  0.667  0.022  1.0
  Fe  Fe3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by Mg2EuFe crystallizes in the trigonal P-3m1 space group. Mg(1) is bonded in a distorted trigonal planar geometry to three equivalent Fe(1) atoms. Eu(1) is bonded in a linear geometry to two equivalent Fe(1) atoms. Fe(1) is bonded to six equivalent Mg(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing FeEu2Mg6 hexagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuMg2Fe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.842
_cell_length_b   4.842
_cell_length_c   5.138
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   104.308
_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
  Eu  Eu0  1  0.000  0.000  0.500  1.0
  Mg  Mg1  1  0.667  0.333  0.978  1.0
  Mg  Mg2  1  0.333  0.667  0.022  1.0
  Fe  Fe3  1  0.000  0.000  0.000  1.0
[/CIF]
.