data_[Ca2Nd16Tm4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Nd  1.1400  1.8500  1.2765
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.6884]
_cell_length_b [8.5426]
_cell_length_c [16.0355]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Ca(Nd4Tm)2]
_chemical_formula_sum '[Ca2 Nd16 Tm4]'
_cell_volume [779.2349]
_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  0.5000  0.5000  1
  Nd  Nd1  8  0.0000  0.1999  0.3567  1
  Nd  Nd2  4  0.0000  0.0000  0.1617  1
  Nd  Nd3  4  0.0000  0.3087  0.0000  1
  Tm  Tm4  4  0.0000  0.5000  0.2029  1
]