data_MgSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.04
_cell_length_b   5.04
_cell_length_c   5.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgSn
_chemical_formula_sum   'Mg2 Sn2'
_cell_volume   129.69
_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  0.52  0.46  0.42  1.0
  Mg  Mg1  1  0.0  0.91  0.47  1.0
  Sn  Sn2  1  0.52  0.46  0.47  1.0
  Sn  Sn3  1  0.0  0.91  0.42  1.0

data_MgSn
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.04
_cell_length_b   5.04
_cell_length_c   5.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   MgSn
_chemical_formula_sum   'Mg2 Sn2'
_cell_volume   129.69
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  2  0.26  0.27  0.97  1.0
  Sn  Sn1  2  0.26  0.27  0.03  1.0

Mg Mg Sn Sn
Mg Mg Sn Sn 0 2 o o o 1 3 o o o 
MgSn is alpha carbon monoxide-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two magnesium;tin molecules. Mg(1) is bonded in a single-bond geometry to one Sn(1) atom. The Mg(1)-Sn(1) bond length is 0.32 Å. Sn(1) is bonded in a single-bond geometry to one Mg(1) atom.