data_Y4Cu3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.69
_cell_length_b   13.69
_cell_length_c   13.69
_cell_angle_alpha   165.38
_cell_angle_beta   165.38
_cell_angle_gamma   20.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y4Cu3
_chemical_formula_sum   'Y4 Cu3'
_cell_volume   163.66
_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
  Y  Y3  1  0.0  0.0  0.49  1.0
  Y  Y4  1  0.0  0.0  0.45  1.0
  Y  Y5  1  0.0  0.0  0.74  1.0
  Y  Y6  1  0.0  0.0  0.21  1.0
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Cu  Cu1  1  0.0  0.0  0.32  1.0
  Cu  Cu2  1  0.0  0.0  0.62  1.0

data_Y4Cu3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.93
_cell_length_b   4.93
_cell_length_c   13.69
_cell_angle_alpha   90.0
_cell_angle_beta   100.37
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Y4Cu3
_chemical_formula_sum   'Y8 Cu6'
_cell_volume   327.33
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Y  Y0  2  0.0  0.0  0.26  1.0
  Y  Y1  2  0.0  0.0  0.51  1.0
  Y  Y2  2  0.0  0.0  0.55  1.0
  Y  Y3  2  0.0  0.0  0.79  1.0
  Cu  Cu4  2  0.0  0.0  0.0  1.0
  Cu  Cu5  2  0.0  0.0  0.38  1.0
  Cu  Cu6  2  0.0  0.0  0.68  1.0

Y Y Y Y Cu Cu Cu