data_[Ca2Ta2Nb2Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Ta  1.5000  1.4500  0.8200
  Nb  1.6000  1.4500  0.8200
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [4.3794]
_cell_length_b [4.3794]
_cell_length_c [10.9057]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [CaTaNbOs2]
_chemical_formula_sum '[Ca2 Ta2 Nb2 Os4]'
_cell_volume [209.1615]
_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
[
  Ca  Ca0  2  0.0000  0.0000  0.0000  1.0
  Ta  Ta1  2  0.0000  0.5000  0.7500  1.0
  Nb  Nb2  2  0.0000  0.5000  0.2500  1.0
  Os  Os3  4  0.0000  0.0000  0.3819  1.0
]