The material structure described by USn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. U(1) is bonded to twelve equivalent Sn(1) atoms to form USn12 cuboctahedra that share corners with twelve equivalent U(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)U4Sn8 cuboctahedra, faces with six equivalent U(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)U4Sn8 cuboctahedra. Sn(1) is bonded to four equivalent U(1) and eight equivalent Sn(1) atoms to form distorted SnU4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)U4Sn8 cuboctahedra, edges with eight equivalent U(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)U4Sn8 cuboctahedra, faces with four equivalent U(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)U4Sn8 cuboctahedra. is represented by the CIF file [CIF]
data_USn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.677
_cell_length_b   4.677
_cell_length_c   4.677
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   102.306
_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
  U  U0  1  0.000  0.000  0.000  1.0
  Sn  Sn1  1  0.000  0.500  0.500  1.0
  Sn  Sn2  1  0.500  0.500  0.000  1.0
  Sn  Sn3  1  0.500  0.000  0.500  1.0
[/CIF]
.
The material structure described by USn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. U(1) is bonded to twelve equivalent Sn(1) atoms to form USn12 cuboctahedra that share corners with twelve equivalent U(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)U4Sn8 cuboctahedra, faces with six equivalent U(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)U4Sn8 cuboctahedra. Sn(1) is bonded to four equivalent U(1) and eight equivalent Sn(1) atoms to form distorted SnU4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)U4Sn8 cuboctahedra, edges with eight equivalent U(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)U4Sn8 cuboctahedra, faces with four equivalent U(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)U4Sn8 cuboctahedra. is represented by the CIF file [CIF]
data_USn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.677
_cell_length_b   4.677
_cell_length_c   4.677
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   102.306
_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
  U  U0  1  0.000  0.000  0.000  1.0
  Sn  Sn1  1  0.000  0.500  0.500  1.0
  Sn  Sn2  1  0.500  0.500  0.000  1.0
  Sn  Sn3  1  0.500  0.000  0.500  1.0
[/CIF]
.