The compound described by Mg3Sn crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. In the second Mg site, Mg(2) is bonded in a 3-coordinate geometry to three equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1) and six equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.032
_cell_length_b   6.032
_cell_length_c   6.032
_cell_angle_alpha   146.692
_cell_angle_beta   127.627
_cell_angle_gamma   63.497
_symmetry_Int_Tables_number   1
_cell_volume   94.403
_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
  Mg  Mg0  1  0.837  0.500  0.337  1.0
  Mg  Mg1  1  0.249  0.251  0.998  1.0
  Mg  Mg2  1  0.747  0.749  0.998  1.0
  Sn  Sn3  1  0.333  0.000  0.333  1.0
[/CIF]
.
The compound described by Mg3Sn crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. In the second Mg site, Mg(2) is bonded in a 3-coordinate geometry to three equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1) and six equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.032
_cell_length_b   6.032
_cell_length_c   6.032
_cell_angle_alpha   146.692
_cell_angle_beta   127.627
_cell_angle_gamma   63.497
_symmetry_Int_Tables_number   1
_cell_volume   94.403
_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
  Mg  Mg0  1  0.837  0.500  0.337  1.0
  Mg  Mg1  1  0.249  0.251  0.998  1.0
  Mg  Mg2  1  0.747  0.749  0.998  1.0
  Sn  Sn3  1  0.333  0.000  0.333  1.0
[/CIF]
.