data_Al2ReBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.96
_cell_length_b   4.96
_cell_length_c   4.96
_cell_angle_alpha   131.85
_cell_angle_beta   131.85
_cell_angle_gamma   70.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2ReBr
_chemical_formula_sum   'Al2 Re1 Br1'
_cell_volume   66.23
_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
  Al  Al0  1  0.0  0.02  0.02  1.0
  Al  Al1  1  0.02  0.0  0.02  1.0
  Re  Re3  1  0.0  0.0  0.05  1.0
  Br  Br2  1  0.0  0.0  0.0  1.0

data_Al2ReBr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.72
_cell_length_b   5.72
_cell_length_c   4.96
_cell_angle_alpha   90.0
_cell_angle_beta   125.24
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Al2ReBr
_chemical_formula_sum   'Al4 Re2 Br2'
_cell_volume   132.45
_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
  Al  Al0  4  0.49  0.49  0.0  1.0
  Re  Re1  2  0.0  0.0  0.05  1.0
  Br  Br2  2  0.0  0.0  0.0  1.0

Al Al Re Br
ReAl2Br is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two ReAl2Br clusters. Re(1) is bonded in a 2-coordinate geometry to two equivalent Al(1) atoms. Both Re(1)-Al(1) bond lengths are 0.21 Å. Al(1) is bonded in a distorted single-bond geometry to one Re(1) and one Br(1) atom. The Al(1)-Br(1) bond length is 0.09 Å. Br(1) is bonded in an L-shaped geometry to two equivalent Al(1) atoms.