data_Sr(CuSn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.45
_cell_length_b   6.45
_cell_length_c   6.45
_cell_angle_alpha   139.09
_cell_angle_beta   139.09
_cell_angle_gamma   59.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr(CuSn)2
_chemical_formula_sum   'Sr1 Cu2 Sn2'
_cell_volume   113.97
_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
  Sr  Sr4  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.0  0.0  0.84  1.0
  Cu  Cu1  1  0.0  0.0  0.37  1.0
  Sn  Sn2  1  0.0  0.25  0.8  1.0
  Sn  Sn3  1  0.25  0.0  0.8  1.0

data_Sr(CuSn)2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.38
_cell_length_b   6.38
_cell_length_c   6.45
_cell_angle_alpha   90.0
_cell_angle_beta   119.62
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr(CuSn)2
_chemical_formula_sum   'Sr2 Cu4 Sn4'
_cell_volume   227.94
_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
  Sr  Sr0  2  0.0  0.0  0.0  1.0
  Cu  Cu1  2  0.0  0.0  0.16  1.0
  Cu  Cu2  2  0.0  0.0  0.63  1.0
  Sn  Sn3  4  0.13  0.13  0.45  1.0

Sr Cu Cu Sn Sn