The structure described by BiMg2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 3-coordinate geometry to three equivalent Bi(1) atoms. In the second Mg site, Mg(2) is bonded in a 5-coordinate geometry to five equivalent Bi(1) atoms. Bi(1) is bonded in a 8-coordinate geometry to three equivalent Mg(1) and five equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.288
_cell_length_b   6.288
_cell_length_c   7.996
_cell_angle_alpha   68.865
_cell_angle_beta   68.865
_cell_angle_gamma   32.424
_symmetry_Int_Tables_number   1
_cell_volume   157.105
_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  0.130  0.130  0.972  1.0
  Mg  Mg1  1  0.870  0.870  0.028  1.0
  Mg  Mg2  1  0.449  0.449  0.305  1.0
  Mg  Mg3  1  0.551  0.551  0.695  1.0
  Bi  Bi4  1  0.177  0.177  0.323  1.0
  Bi  Bi5  1  0.823  0.823  0.677  1.0
[/CIF]
.
The structure described by BiMg2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 3-coordinate geometry to three equivalent Bi(1) atoms. In the second Mg site, Mg(2) is bonded in a 5-coordinate geometry to five equivalent Bi(1) atoms. Bi(1) is bonded in a 8-coordinate geometry to three equivalent Mg(1) and five equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.288
_cell_length_b   6.288
_cell_length_c   7.996
_cell_angle_alpha   68.865
_cell_angle_beta   68.865
_cell_angle_gamma   32.424
_symmetry_Int_Tables_number   1
_cell_volume   157.105
_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  0.130  0.130  0.972  1.0
  Mg  Mg1  1  0.870  0.870  0.028  1.0
  Mg  Mg2  1  0.449  0.449  0.305  1.0
  Mg  Mg3  1  0.551  0.551  0.695  1.0
  Bi  Bi4  1  0.177  0.177  0.323  1.0
  Bi  Bi5  1  0.823  0.823  0.677  1.0
[/CIF]
.