data_[Pr8Ge8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.9694]
_cell_length_b [7.0076]
_cell_length_c [12.6365]
_cell_angle_alpha [93.8937]
_cell_angle_beta [90.3379]
_cell_angle_gamma [91.1551]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Pr2Ge2O7]
_chemical_formula_sum '[Pr8 Ge8 O28]'
_cell_volume [615.5821]
_cell_formula_units_Z [4]
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
[
  Pr  Pr0  2  0.0515  0.3293  0.1165  1
  Pr  Pr1  2  0.1187  0.0828  0.3616  1
  Pr  Pr2  2  0.3274  0.8296  0.1096  1
  Pr  Pr3  2  0.3693  0.2418  0.6269  1
  Ge  Ge4  2  0.1447  0.6177  0.3851  1
  Ge  Ge5  2  0.1607  0.1490  0.8826  1
  Ge  Ge6  2  0.3752  0.7369  0.6000  1
  Ge  Ge7  2  0.4884  0.6730  0.8315  1
  O  O8  2  0.0037  0.6637  0.0806  1
  O  O9  2  0.0067  0.0116  0.1837  1
  O  O10  2  0.0361  0.2275  0.5648  1
  O  O11  2  0.0669  0.4089  0.3141  1
  O  O12  2  0.2219  0.9243  0.6220  1
  O  O13  2  0.2505  0.0999  0.0078  1
  O  O14  2  0.2903  0.7779  0.3148  1
  O  O15  2  0.2952  0.7235  0.9146  1
  O  O16  2  0.3014  0.5611  0.4942  1
  O  O17  2  0.3536  0.4916  0.1216  1
  O  O18  2  0.3566  0.2137  0.8082  1
  O  O19  2  0.3732  0.1369  0.2151  1
  O  O20  2  0.3888  0.5726  0.7018  1
  O  O21  2  0.4139  0.1593  0.4451  1
]