data_[Ca4Ni4Ru2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Ni  1.9100  1.3500  0.7400
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [6.3980]
_cell_length_b [6.3980]
_cell_length_c [4.5248]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Ca2Ni2Ru]
_chemical_formula_sum '[Ca4 Ni4 Ru2]'
_cell_volume [185.2228]
_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  4  0.1834  0.6834  0.5000  1
  Ni  Ni1  4  0.1293  0.3707  0.0000  1
  Ru  Ru2  2  0.0000  0.0000  0.0000  1
]