data_Sn2AsW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.25
_cell_length_b   3.25
_cell_length_c   8.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn2AsW
_chemical_formula_sum   'Sn2 As1 W1'
_cell_volume   85.13
_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
  Sn  Sn1  1  0.63  0.63  0.78  1.0
  Sn  Sn2  1  0.0  0.0  0.38  1.0
  As  As0  1  0.0  0.0  0.6  1.0
  W  W3  1  0.63  0.63  0.36  1.0

data_Sn2AsW
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.6
_cell_length_b   4.6
_cell_length_c   8.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sn2AsW
_chemical_formula_sum   'Sn4 As2 W2'
_cell_volume   170.26
_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
  Sn  Sn0  2  0.0  0.0  0.38  1.0
  Sn  Sn1  2  0.13  0.5  0.78  1.0
  As  As2  2  0.0  0.0  0.6  1.0
  W  W3  2  0.13  0.5  0.36  1.0

Sn Sn As W
Sn Sn As W 0 2 o + o 0 2 + o o 0 2 + + o 1 3 - - o 1 2 o o o 