data_[Na2Sr2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.1511]
_cell_length_b [6.0409]
_cell_length_c [7.7521]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.2569]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaSr]
_chemical_formula_sum '[Na2 Sr2]'
_cell_volume [187.5430]
_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
[
  Na  Na0  2  0.0697  0.2500  0.1309  1.0
  Sr  Sr1  2  0.3285  0.2500  0.6592  1.0
]