data_[Li18As12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [R-3c]
_cell_length_a [7.4739]
_cell_length_b [7.4739]
_cell_length_c [11.1894]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [167]
_chemical_formula_structural [Li3As2]
_chemical_formula_sum '[Li18 As12]'
_cell_volume [541.2974]
_cell_formula_units_Z [6]
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
[
  Li  Li0  18  0.0000  0.3172  0.2500  1.0
  As  As1  12  0.0000  0.0000  0.1385  1.0
]