data_[Ca2Nb4Zn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Nb  1.6000  1.4500  0.8200
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.1656]
_cell_length_b [8.1656]
_cell_length_c [2.9343]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Ca(NbZn)2]
_chemical_formula_sum '[Ca2 Nb4 Zn4]'
_cell_volume [195.6493]
_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
  Nb  Nb1  4  0.1110  0.3890  0.0000  1
  Zn  Zn2  4  0.1823  0.6823  0.5000  1
]