data_Dy2Y2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.9
_cell_length_b   3.9
_cell_length_c   9.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Dy2Y2O5
_chemical_formula_sum   'Dy2 Y2 O5'
_cell_volume   149.8
_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
  Dy  Dy0  1  0.95  0.95  0.93  1.0
  Dy  Dy1  1  0.95  0.95  0.0  1.0
  Y  Y2  1  0.0  0.0  0.26  1.0
  Y  Y3  1  0.0  0.0  0.6  1.0
  O  O4  1  0.0  0.95  0.32  1.0
  O  O5  1  0.0  0.95  0.54  1.0
  O  O6  1  0.0  0.0  0.0  1.0
  O  O7  1  0.95  0.0  0.32  1.0
  O  O8  1  0.95  0.0  0.54  1.0

data_Dy2Y2O5
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.51
_cell_length_b   5.51
_cell_length_c   9.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Dy2Y2O5
_chemical_formula_sum   'Dy4 Y4 O10'
_cell_volume   299.61
_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  0.6  1.0
  Dy  Dy2  2  0.45  0.5  -0.0  1.0
  Dy  Dy3  2  0.45  0.5  0.93  1.0
  O  O4  4  0.47  0.47  0.32  1.0
  O  O5  4  0.47  0.47  0.54  1.0
  O  O6  2  0.0  0.0  0.0  1.0

Dy Dy Y Y O O O O O