data_[Na2Sr8Ca6]
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
  Ca  1.0000  1.8000  1.1400
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [6.4989]
_cell_length_b [12.7501]
_cell_length_c [9.1257]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [NaSr4Ca3]
_chemical_formula_sum '[Na2 Sr8 Ca6]'
_cell_volume [756.1659]
_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  0.0000  0.0000  0.3842  1.0
  Sr  Sr1  4  0.0000  0.2505  0.1424  1.0
  Sr  Sr2  2  0.0000  0.0000  0.8626  1.0
  Sr  Sr3  2  0.0000  0.5000  0.8500  1.0
  Ca  Ca4  4  0.0000  0.2368  0.6049  1.0
  Ca  Ca5  2  0.0000  0.5000  0.3952  1.0
]