data_[Na8Be4Cu4P8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  Cu  1.9000  1.3500  0.8200
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [5.4257]
_cell_length_b [13.7928]
_cell_length_c [5.4067]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Na2BeCuP2]
_chemical_formula_sum '[Na8 Be4 Cu4 P8]'
_cell_volume [404.6159]
_cell_formula_units_Z [4]
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  8  0.2349  0.1774  0.5000  1.0
  Be  Be1  4  0.0000  0.5000  0.2500  1.0
  Cu  Cu2  4  0.0000  0.0000  0.2500  1.0
  P  P3  8  0.2301  0.5981  0.0000  1.0
]