The material described by NaSn crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to eight equivalent Sn(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to three equivalent Na(2), four equivalent Na(1), and three equivalent Sn(1) atoms. is represented by the CIF file [CIF]
data_NaSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.427
_cell_length_b   10.427
_cell_length_c   11.406
_cell_angle_alpha   117.199
_cell_angle_beta   117.199
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   946.232
_cell_formula_units_Z   16
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  0.126  0.250  0.500  1.0
  Na  Na1  1  0.750  0.126  0.000  1.0
  Na  Na2  1  0.250  0.374  0.000  1.0
  Na  Na3  1  0.374  0.750  0.500  1.0
  Na  Na4  1  0.874  0.750  0.500  1.0
  Na  Na5  1  0.250  0.874  0.000  1.0
  Na  Na6  1  0.750  0.626  0.000  1.0
  Na  Na7  1  0.626  0.250  0.500  1.0
  Na  Na8  1  0.497  0.747  0.250  1.0
  Na  Na9  1  0.003  0.497  0.750  1.0
  Na  Na10  1  0.747  0.753  0.750  1.0
  Na  Na11  1  0.753  0.003  0.250  1.0
  Na  Na12  1  0.503  0.253  0.750  1.0
  Na  Na13  1  0.997  0.503  0.250  1.0
  Na  Na14  1  0.253  0.247  0.250  1.0
  Na  Na15  1  0.247  0.997  0.750  1.0
  Sn  Sn16  1  0.005  0.060  0.872  1.0
  Sn  Sn17  1  0.311  0.005  0.372  1.0
  Sn  Sn18  1  0.060  0.866  0.372  1.0
  Sn  Sn19  1  0.634  0.440  0.128  1.0
  Sn  Sn20  1  0.495  0.189  0.128  1.0
  Sn  Sn21  1  0.189  0.634  0.628  1.0
  Sn  Sn22  1  0.440  0.495  0.628  1.0
  Sn  Sn23  1  0.866  0.311  0.872  1.0
  Sn  Sn24  1  0.995  0.940  0.128  1.0
  Sn  Sn25  1  0.689  0.995  0.628  1.0
  Sn  Sn26  1  0.940  0.134  0.628  1.0
  Sn  Sn27  1  0.366  0.560  0.872  1.0
  Sn  Sn28  1  0.505  0.811  0.872  1.0
  Sn  Sn29  1  0.811  0.366  0.372  1.0
  Sn  Sn30  1  0.560  0.505  0.372  1.0
  Sn  Sn31  1  0.134  0.689  0.128  1.0
[/CIF]
.
The material described by NaSn crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to eight equivalent Sn(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to three equivalent Na(2), four equivalent Na(1), and three equivalent Sn(1) atoms. is represented by the CIF file [CIF]
data_NaSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.427
_cell_length_b   10.427
_cell_length_c   11.406
_cell_angle_alpha   117.199
_cell_angle_beta   117.199
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   946.232
_cell_formula_units_Z   16
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  0.126  0.250  0.500  1.0
  Na  Na1  1  0.750  0.126  0.000  1.0
  Na  Na2  1  0.250  0.374  0.000  1.0
  Na  Na3  1  0.374  0.750  0.500  1.0
  Na  Na4  1  0.874  0.750  0.500  1.0
  Na  Na5  1  0.250  0.874  0.000  1.0
  Na  Na6  1  0.750  0.626  0.000  1.0
  Na  Na7  1  0.626  0.250  0.500  1.0
  Na  Na8  1  0.497  0.747  0.250  1.0
  Na  Na9  1  0.003  0.497  0.750  1.0
  Na  Na10  1  0.747  0.753  0.750  1.0
  Na  Na11  1  0.753  0.003  0.250  1.0
  Na  Na12  1  0.503  0.253  0.750  1.0
  Na  Na13  1  0.997  0.503  0.250  1.0
  Na  Na14  1  0.253  0.247  0.250  1.0
  Na  Na15  1  0.247  0.997  0.750  1.0
  Sn  Sn16  1  0.005  0.060  0.872  1.0
  Sn  Sn17  1  0.311  0.005  0.372  1.0
  Sn  Sn18  1  0.060  0.866  0.372  1.0
  Sn  Sn19  1  0.634  0.440  0.128  1.0
  Sn  Sn20  1  0.495  0.189  0.128  1.0
  Sn  Sn21  1  0.189  0.634  0.628  1.0
  Sn  Sn22  1  0.440  0.495  0.628  1.0
  Sn  Sn23  1  0.866  0.311  0.872  1.0
  Sn  Sn24  1  0.995  0.940  0.128  1.0
  Sn  Sn25  1  0.689  0.995  0.628  1.0
  Sn  Sn26  1  0.940  0.134  0.628  1.0
  Sn  Sn27  1  0.366  0.560  0.872  1.0
  Sn  Sn28  1  0.505  0.811  0.872  1.0
  Sn  Sn29  1  0.811  0.366  0.372  1.0
  Sn  Sn30  1  0.560  0.505  0.372  1.0
  Sn  Sn31  1  0.134  0.689  0.128  1.0
[/CIF]
.