data_[K4Rb2Mg2F10]
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
  Mg  1.3100  1.5000  0.8600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.0485]
_cell_length_b [6.2514]
_cell_length_c [12.3657]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [K2RbMgF5]
_chemical_formula_sum '[K4 Rb2 Mg2 F10]'
_cell_volume [312.9622]
_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
[
  K  K0  4  0.0000  0.0000  0.2161  1.0
  Rb  Rb1  2  0.0000  0.5000  0.0000  1.0
  Mg  Mg2  2  0.0000  0.5000  0.5000  1.0
  F  F3  8  0.0000  0.2733  0.3804  1.0
  F  F4  2  0.0000  0.0000  0.0000  1.0
]