data_[K4Rb4Sr2]
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
  Sr  0.9500  2.0000  1.3200
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [12.4729]
_cell_length_b [12.4729]
_cell_length_c [4.7762]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [K2Rb2Sr]
_chemical_formula_sum '[K4 Rb4 Sr2]'
_cell_volume [743.0517]
_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  4  0.1329  0.3671  0.0000  1
  K  K1  4  0.1707  0.6707  0.5000  1
  Sr  Sr2  2  0.0000  0.0000  0.0000  1
]