The crystal structure described by Mg2Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(2) and six equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_Mg2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.111
_cell_length_b   8.111
_cell_length_c   5.149
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   155.303
_symmetry_Int_Tables_number   1
_cell_volume   141.532
_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  0.443  0.557  0.250  1.0
  Mg  Mg1  1  0.776  0.224  0.250  1.0
  Mg  Mg2  1  0.224  0.776  0.750  1.0
  Mg  Mg3  1  0.557  0.443  0.750  1.0
  Sn  Sn4  1  0.112  0.888  0.250  1.0
  Sn  Sn5  1  0.888  0.112  0.750  1.0
[/CIF]
.
The crystal structure described by Mg2Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(2) and six equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_Mg2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.111
_cell_length_b   8.111
_cell_length_c   5.149
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   155.303
_symmetry_Int_Tables_number   1
_cell_volume   141.532
_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  0.443  0.557  0.250  1.0
  Mg  Mg1  1  0.776  0.224  0.250  1.0
  Mg  Mg2  1  0.224  0.776  0.750  1.0
  Mg  Mg3  1  0.557  0.443  0.750  1.0
  Sn  Sn4  1  0.112  0.888  0.250  1.0
  Sn  Sn5  1  0.888  0.112  0.750  1.0
[/CIF]
.