data_[Ca2Cu1Sn3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Cu  1.9000  1.3500  0.8200
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [4.2643]
_cell_length_b [4.7191]
_cell_length_c [8.0512]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Ca2CuSn3]
_chemical_formula_sum '[Ca2 Cu1 Sn3]'
_cell_volume [162.0188]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5040  1.0
  Ca  Ca1  1  0.0000  0.5000  0.0088  1.0
  Cu  Cu2  1  0.5000  0.5000  0.3170  1.0
  Sn  Sn3  1  0.5000  0.0000  0.1943  1.0
  Sn  Sn4  1  0.5000  0.0000  0.8387  1.0
  Sn  Sn5  1  0.5000  0.5000  0.6372  1.0
]