data_[K4Rb8Be2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Be  1.5700  1.0500  0.5900
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.1967]
_cell_length_b [13.2048]
_cell_length_c [5.5397]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.5713]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Rb4BeAs2]
_chemical_formula_sum '[K4 Rb8 Be2 As4]'
_cell_volume [1040.7666]
_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
[
  Rb  Rb0  8  0.1254  0.1581  0.9691  1
  K  K1  4  0.1398  0.5000  0.3577  1
  Be  Be2  2  0.0000  0.0000  0.5000  1
  As  As3  4  0.1345  0.0000  0.4779  1
]