data_Mg2CoSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   5.2
_cell_angle_alpha   134.26
_cell_angle_beta   134.26
_cell_angle_gamma   66.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2CoSn
_chemical_formula_sum   'Mg2 Co1 Sn1'
_cell_volume   70.88
_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  Mg1  1  0.02  0.0  0.17  1.0
  Mg  Mg2  1  0.0  0.02  0.17  1.0
  Co  Co0  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.34  1.0

data_Mg2CoSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.71
_cell_length_b   5.71
_cell_length_c   5.2
_cell_angle_alpha   90.0
_cell_angle_beta   123.34
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Mg2CoSn
_chemical_formula_sum   'Mg4 Co2 Sn2'
_cell_volume   141.75
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  4  0.34  0.49  0.85  1.0
  Co  Co1  2  0.0  0.0  0.0  1.0
  Sn  Sn2  2  0.16  0.5  0.66  1.0

Mg Mg Co Sn