data_[K4Mn2Be2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Mn  1.5500  1.4000  0.6483
  Be  1.5700  1.0500  0.5900
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.0900]
_cell_length_b [3.7258]
_cell_length_c [20.0187]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [K2MnBe]
_chemical_formula_sum '[K4 Mn2 Be2]'
_cell_volume [230.4732]
_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  0.1466  1
  Mn  Mn1  2  0.0000  0.5000  0.0000  1
  Be  Be2  2  0.0000  0.5000  0.5000  1
]