data_NaReSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.04
_cell_length_b   3.04
_cell_length_c   9.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaReSn2
_chemical_formula_sum   'Na1 Re1 Sn2'
_cell_volume   91.13
_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
  Na  Na0  1  0.0  0.0  0.21  1.0
  Re  Re1  1  0.52  0.52  0.57  1.0
  Sn  Sn2  1  0.0  0.0  0.44  1.0
  Sn  Sn3  1  0.52  0.52  0.44  1.0

data_NaReSn2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.3
_cell_length_b   4.3
_cell_length_c   9.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaReSn2
_chemical_formula_sum   'Na2 Re2 Sn4'
_cell_volume   182.25
_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
  Na  Na0  2  0.0  0.0  0.21  1.0
  Re  Re1  2  0.02  0.5  0.57  1.0
  Sn  Sn2  2  0.0  0.0  0.44  1.0
  Sn  Sn3  2  0.02  0.5  0.44  1.0

Na Re Sn Sn
NaSnReSn crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two sodium stannanide molecules and two ReSn clusters. In each ReSn cluster, Re(1) is bonded in a single-bond geometry to one Sn(2) atom. The Re(1)-Sn(2) bond length is 1.24 Å. Sn(2) is bonded in a single-bond geometry to one Re(1) atom.