data_AlReSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.21
_cell_length_b   3.21
_cell_length_c   7.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlReSn2
_chemical_formula_sum   'Al1 Re1 Sn2'
_cell_volume   82.47
_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  0.0  0.0  1.0
  Re  Re1  1  0.0  0.0  1.0  1.0
  Sn  Sn2  1  0.61  0.61  0.7  1.0
  Sn  Sn3  1  0.61  0.61  0.29  1.0

data_AlReSn2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   7.99
_cell_length_b   4.54
_cell_length_c   4.54
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   AlReSn2
_chemical_formula_sum   'Al2 Re2 Sn4'
_cell_volume   164.94
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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  2  0.0  0.0  0.0  1.0
  Re  Re1  2  0.0  0.0  0.0  1.0
  Sn  Sn2  4  0.3  0.0  0.61  1.0

ReAlSn2 crystallizes in the monoclinic Cm space group. Re(1) is bonded in a single-bond geometry to one Al(1) and three equivalent Sn(1) atoms. The Re(1)-Al(1) bond length is 0.04 Å. There is one shorter (2.94 Å) and two longer (3.29 Å) Re(1)-Sn(1) bond lengths. Al(1) is bonded in a single-bond geometry to one Re(1) and three equivalent Sn(2) atoms. There is one shorter (2.91 Å) and two longer (3.26 Å) Al(1)-Sn(2) bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to three equivalent Re(1), one Sn(2), and four equivalent Sn(1) atoms. The Sn(1)-Sn(2) bond length is 3.32 Å. All Sn(1)-Sn(1) bond lengths are 3.21 Å. In the second Sn site, Sn(2) is bonded in a distorted single-bond geometry to three equivalent Al(1), one Sn(1), and four equivalent Sn(2) atoms. All Sn(2)-Sn(2) bond lengths are 3.21 Å.