The structure described by Mg3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Sn(1) atoms to form distorted MgMg8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with six equivalent Sn(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with four equivalent Sn(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Mg8Sn4 cuboctahedra. Sn(1) is bonded to twelve equivalent Mg(1) atoms to form SnMg12 cuboctahedra that share corners with six equivalent Sn(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with eighteen equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.117
_cell_length_b   6.315
_cell_length_c   6.315
_cell_angle_alpha   60.006
_cell_angle_beta   90.002
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   176.698
_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  0.250  0.170  0.160  1.0
  Mg  Mg1  1  0.250  0.160  0.670  1.0
  Mg  Mg2  1  0.250  0.670  0.170  1.0
  Mg  Mg3  1  0.750  0.830  0.840  1.0
  Mg  Mg4  1  0.750  0.840  0.330  1.0
  Mg  Mg5  1  0.750  0.330  0.830  1.0
  Sn  Sn6  1  0.250  0.667  0.667  1.0
  Sn  Sn7  1  0.750  0.333  0.333  1.0
[/CIF]
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The structure described by Mg3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Sn(1) atoms to form distorted MgMg8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with six equivalent Sn(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with four equivalent Sn(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Mg8Sn4 cuboctahedra. Sn(1) is bonded to twelve equivalent Mg(1) atoms to form SnMg12 cuboctahedra that share corners with six equivalent Sn(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with eighteen equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.117
_cell_length_b   6.315
_cell_length_c   6.315
_cell_angle_alpha   60.006
_cell_angle_beta   90.002
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   176.698
_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  0.250  0.170  0.160  1.0
  Mg  Mg1  1  0.250  0.160  0.670  1.0
  Mg  Mg2  1  0.250  0.670  0.170  1.0
  Mg  Mg3  1  0.750  0.830  0.840  1.0
  Mg  Mg4  1  0.750  0.840  0.330  1.0
  Mg  Mg5  1  0.750  0.330  0.830  1.0
  Sn  Sn6  1  0.250  0.667  0.667  1.0
  Sn  Sn7  1  0.750  0.333  0.333  1.0
[/CIF]
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