data_[Ca4Mg4Sb4P2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Mg  1.3100  1.5000  0.8600
  Sb  2.0500  1.4500  0.8300
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.8183]
_cell_length_b [4.8183]
_cell_length_c [16.4596]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Ca2Mg2Sb2P]
_chemical_formula_sum '[Ca4 Mg4 Sb4 P2]'
_cell_volume [382.1281]
_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  0.0000  0.0000  0.1709  1
  Mg  Mg1  4  0.0000  0.5000  0.0000  1
  Sb  Sb2  4  0.0000  0.0000  0.3646  1
  P  P3  2  0.0000  0.0000  0.0000  1
]