data_Cr2CuBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.03
_cell_length_b   3.03
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2CuBr
_chemical_formula_sum   'Cr2 Cu1 Br1'
_cell_volume   67.42
_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
  Cr  Cr1  1  0.0  0.0  0.21  1.0
  Cr  Cr2  1  0.52  0.52  0.74  1.0
  Cu  Cu3  1  0.0  0.0  0.13  1.0
  Br  Br0  1  0.52  0.52  0.93  1.0

data_Cr2CuBr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.29
_cell_length_b   4.29
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cr2CuBr
_chemical_formula_sum   'Cr4 Cu2 Br2'
_cell_volume   134.84
_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
  Cr  Cr0  2  0.0  0.0  0.21  1.0
  Cr  Cr1  2  0.02  0.5  0.74  1.0
  Cu  Cu2  2  0.0  0.0  0.13  1.0
  Br  Br3  2  0.02  0.5  0.93  1.0

Cr Cr Cu Br
Cr Cr Cu Br 0 2 o o o 1 3 o o o 