data_[Be1Cu2S2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Cu  1.9000  1.3500  0.8200
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P-6m2]
_cell_length_a [3.8896]
_cell_length_b [3.8896]
_cell_length_c [18.8311]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [187]
_chemical_formula_structural [Be(CuS)2]
_chemical_formula_sum '[Be1 Cu2 S2]'
_cell_volume [246.7231]
_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
[
  Be  Be0  1  0.3333  0.6667  0.5000  1
  Cu  Cu1  2  0.0000  0.0000  0.4184  1
  S  S2  2  0.3333  0.6667  0.6017  1
]