data_Na2SrAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   7.44
_cell_angle_alpha   107.58
_cell_angle_beta   107.58
_cell_angle_gamma   59.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SrAs
_chemical_formula_sum   'Na2 Sr1 As1'
_cell_volume   137.31
_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
  Na  Na1  1  0.03  0.0  0.43  1.0
  Na  Na2  1  0.13  0.0  0.98  1.0
  Sr  Sr3  1  0.84  0.0  0.79  1.0
  As  As0  1  0.62  0.0  0.27  1.0

data_Na2SrAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.72
_cell_length_b   4.79
_cell_length_c   7.44
_cell_angle_alpha   107.58
_cell_angle_beta   90.0
_cell_angle_gamma   119.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SrAs
_chemical_formula_sum   'Na2 Sr1 As1'
_cell_volume   137.31
_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
  Na  Na0  1  0.0  0.87  0.02  1.0
  Na  Na1  1  0.0  0.97  0.57  1.0
  Sr  Sr2  1  0.0  0.16  0.21  1.0
  As  As3  1  0.0  0.38  0.73  1.0

Na Na Sr As