data_[K4Rb4Ag4]
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
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.1159]
_cell_length_b [5.0094]
_cell_length_c [7.1739]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.2876]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KRbAg]
_chemical_formula_sum '[K4 Rb4 Ag4]'
_cell_volume [636.1204]
_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
[
  K  K0  4  0.0909  0.5000  0.7932  1.0
  Rb  Rb1  4  0.1576  0.0000  0.3243  1.0
  Ag  Ag2  4  0.2346  0.0000  0.8966  1.0
]