The structure described by MgEuF4 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. Eu(1) is bonded in a 8-coordinate geometry to two equivalent F(3) and six equivalent F(2) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to one Mg(1) and three equivalent Eu(1) atoms to form a mixture of distorted edge and corner-sharing FEu3Mg tetrahedra. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Mg(1) and two equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_EuMgF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.753
_cell_length_b   7.753
_cell_length_c   5.608
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.452
_symmetry_Int_Tables_number   1
_cell_volume   171.337
_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  0.667  0.333  0.750  1.0
  Eu  Eu1  1  0.333  0.667  0.250  1.0
  Mg  Mg2  1  0.089  0.911  0.250  1.0
  Mg  Mg3  1  0.911  0.089  0.750  1.0
  F  F4  1  0.000  0.000  0.000  1.0
  F  F5  1  0.000  0.000  0.500  1.0
  F  F6  1  0.187  0.813  0.497  1.0
  F  F7  1  0.813  0.187  0.503  1.0
  F  F8  1  0.399  0.601  0.750  1.0
  F  F9  1  0.601  0.399  0.250  1.0
  F  F10  1  0.187  0.813  0.003  1.0
  F  F11  1  0.813  0.187  0.997  1.0
[/CIF]
.
The structure described by MgEuF4 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. Eu(1) is bonded in a 8-coordinate geometry to two equivalent F(3) and six equivalent F(2) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to one Mg(1) and three equivalent Eu(1) atoms to form a mixture of distorted edge and corner-sharing FEu3Mg tetrahedra. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Mg(1) and two equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_EuMgF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.753
_cell_length_b   7.753
_cell_length_c   5.608
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.452
_symmetry_Int_Tables_number   1
_cell_volume   171.337
_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  0.667  0.333  0.750  1.0
  Eu  Eu1  1  0.333  0.667  0.250  1.0
  Mg  Mg2  1  0.089  0.911  0.250  1.0
  Mg  Mg3  1  0.911  0.089  0.750  1.0
  F  F4  1  0.000  0.000  0.000  1.0
  F  F5  1  0.000  0.000  0.500  1.0
  F  F6  1  0.187  0.813  0.497  1.0
  F  F7  1  0.813  0.187  0.503  1.0
  F  F8  1  0.399  0.601  0.750  1.0
  F  F9  1  0.601  0.399  0.250  1.0
  F  F10  1  0.187  0.813  0.003  1.0
  F  F11  1  0.813  0.187  0.997  1.0
[/CIF]
.