data_[Mn2Nb2Pb4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mn  1.5500  1.4000  0.6483
  Nb  1.6000  1.4500  0.8200
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.7161]
_cell_length_b [5.8042]
_cell_length_c [5.8636]
_cell_angle_alpha [90.0000]
_cell_angle_beta [126.5947]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [MnNb(PbO3)2]
_chemical_formula_sum '[Mn2 Nb2 Pb4 O12]'
_cell_volume [265.4870]
_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
[
  Mn  Mn0  2  0.0000  0.0000  0.5000  1.0
  Nb  Nb1  2  0.0000  0.5000  0.0000  1.0
  Pb  Pb2  4  0.2490  0.0000  0.2356  1.0
  O  O3  8  0.0351  0.2551  0.7934  1.0
  O  O4  4  0.2439  0.0000  0.6863  1.0
]