The crystal structure described by Tm3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Sn(1) atoms to form distorted TmTm8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Tm12 cuboctahedra, corners with fourteen equivalent Tm(1)Tm8Sn4 cuboctahedra, edges with six equivalent Sn(1)Tm12 cuboctahedra, edges with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra, faces with four equivalent Sn(1)Tm12 cuboctahedra, and faces with sixteen equivalent Tm(1)Tm8Sn4 cuboctahedra. Sn(1) is bonded to twelve equivalent Tm(1) atoms to form SnTm12 cuboctahedra that share corners with six equivalent Sn(1)Tm12 cuboctahedra, corners with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra, edges with eighteen equivalent Tm(1)Tm8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra. is represented by the CIF card [CIF]
data_Tm3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.715
_cell_length_b   6.715
_cell_length_c   5.484
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   214.137
_cell_formula_units_Z   2
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
  Tm  Tm0  1  0.170  0.340  0.250  1.0
  Tm  Tm1  1  0.660  0.830  0.250  1.0
  Tm  Tm2  1  0.170  0.830  0.250  1.0
  Tm  Tm3  1  0.830  0.660  0.750  1.0
  Tm  Tm4  1  0.340  0.170  0.750  1.0
  Tm  Tm5  1  0.830  0.170  0.750  1.0
  Sn  Sn6  1  0.333  0.667  0.750  1.0
  Sn  Sn7  1  0.667  0.333  0.250  1.0
[/CIF]
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The crystal structure described by Tm3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Sn(1) atoms to form distorted TmTm8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Tm12 cuboctahedra, corners with fourteen equivalent Tm(1)Tm8Sn4 cuboctahedra, edges with six equivalent Sn(1)Tm12 cuboctahedra, edges with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra, faces with four equivalent Sn(1)Tm12 cuboctahedra, and faces with sixteen equivalent Tm(1)Tm8Sn4 cuboctahedra. Sn(1) is bonded to twelve equivalent Tm(1) atoms to form SnTm12 cuboctahedra that share corners with six equivalent Sn(1)Tm12 cuboctahedra, corners with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra, edges with eighteen equivalent Tm(1)Tm8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Sn4 cuboctahedra. is represented by the CIF card [CIF]
data_Tm3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.715
_cell_length_b   6.715
_cell_length_c   5.484
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   214.137
_cell_formula_units_Z   2
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
  Tm  Tm0  1  0.170  0.340  0.250  1.0
  Tm  Tm1  1  0.660  0.830  0.250  1.0
  Tm  Tm2  1  0.170  0.830  0.250  1.0
  Tm  Tm3  1  0.830  0.660  0.750  1.0
  Tm  Tm4  1  0.340  0.170  0.750  1.0
  Tm  Tm5  1  0.830  0.170  0.750  1.0
  Sn  Sn6  1  0.333  0.667  0.750  1.0
  Sn  Sn7  1  0.667  0.333  0.250  1.0
[/CIF]
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