The material described by MgF2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to one F(2), one F(3), and three equivalent F(1) atoms to form a mixture of edge and corner-sharing MgF5 trigonal bipyramids. There are three inequivalent F sites. In the first F site, F(1) is bonded in a T-shaped geometry to three equivalent Mg(1) atoms. In the second F site, F(2) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a linear geometry to two equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgF2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.588
_cell_length_b   5.588
_cell_length_c   6.764
_cell_angle_alpha   54.046
_cell_angle_beta   54.046
_cell_angle_gamma   41.274
_symmetry_Int_Tables_number   1
_cell_volume   108.486
_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
  Mg  Mg0  1  0.895  0.895  0.849  1.0
  Mg  Mg1  1  0.105  0.105  0.151  1.0
  F  F2  1  0.649  0.649  0.104  1.0
  F  F3  1  0.000  0.000  0.500  1.0
  F  F4  1  0.351  0.351  0.896  1.0
  F  F5  1  0.000  0.000  0.000  1.0
[/CIF]
.
The material described by MgF2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to one F(2), one F(3), and three equivalent F(1) atoms to form a mixture of edge and corner-sharing MgF5 trigonal bipyramids. There are three inequivalent F sites. In the first F site, F(1) is bonded in a T-shaped geometry to three equivalent Mg(1) atoms. In the second F site, F(2) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a linear geometry to two equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgF2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.588
_cell_length_b   5.588
_cell_length_c   6.764
_cell_angle_alpha   54.046
_cell_angle_beta   54.046
_cell_angle_gamma   41.274
_symmetry_Int_Tables_number   1
_cell_volume   108.486
_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
  Mg  Mg0  1  0.895  0.895  0.849  1.0
  Mg  Mg1  1  0.105  0.105  0.151  1.0
  F  F2  1  0.649  0.649  0.104  1.0
  F  F3  1  0.000  0.000  0.500  1.0
  F  F4  1  0.351  0.351  0.896  1.0
  F  F5  1  0.000  0.000  0.000  1.0
[/CIF]
.