data_CuGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.89
_cell_length_b   3.71
_cell_length_c   6.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuGe3
_chemical_formula_sum   'Cu1 Ge3'
_cell_volume   69.25
_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
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.45  0.86  0.05  1.0
  Ge  Ge2  1  0.0  0.0  0.22  1.0
  Ge  Ge3  1  0.45  0.86  0.39  1.0

data_CuGe3
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.89
_cell_length_b   3.71
_cell_length_c   6.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuGe3
_chemical_formula_sum   'Cu1 Ge3'
_cell_volume   69.25
_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
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.0  0.0  0.22  1.0
  Ge  Ge2  1  0.45  0.86  0.05  1.0
  Ge  Ge3  1  0.45  0.86  0.39  1.0

Cu Ge Ge Ge
Cu Ge Ge Ge 0 1 o - o 0 1 - - o 0 2 o o o 1 2 o + o 1 3 o o o 2 3 o - o 2 3 - - o 