data_Sr2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.31
_cell_length_b   7.43
_cell_length_c   4.59
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2As
_chemical_formula_sum   'Sr4 As2'
_cell_volume   249.43
_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
  Sr  Sr2  1  0.99  0.0  0.0  1.0
  Sr  Sr3  1  0.32  0.43  0.0  1.0
  Sr  Sr4  1  0.64  0.14  0.3  1.0
  Sr  Sr5  1  0.67  0.29  0.3  1.0
  As  As0  1  0.0  0.0  0.0  1.0
  As  As1  1  0.65  0.71  0.3  1.0

data_Sr2As
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.59
_cell_length_b   7.31
_cell_length_c   7.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2As
_chemical_formula_sum   'Sr4 As2'
_cell_volume   249.43
_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
  Sr  Sr0  1  -0.0  0.32  0.43  1.0
  Sr  Sr1  1  -0.0  0.99  0.0  1.0
  Sr  Sr2  1  0.3  0.64  0.14  1.0
  Sr  Sr3  1  0.3  0.67  0.29  1.0
  As  As4  1  0.0  0.0  0.0  1.0
  As  As5  1  0.3  0.65  0.71  1.0

Sr Sr Sr Sr As As
Sr Sr Sr Sr As As 0 4 + o o 0 5 o - o 1 3 o o o 1 2 o o o 1 5 o o o 2 3 o o o 2 5 o - o 3 5 o o o 4 5 - - o 