The crystal structure described by NpSn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Sn(1) atoms to form NpSn12 cuboctahedra that share corners with twelve equivalent Np(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)Np4Sn8 cuboctahedra, faces with six equivalent Np(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)Np4Sn8 cuboctahedra. Sn(1) is bonded to four equivalent Np(1) and eight equivalent Sn(1) atoms to form distorted SnNp4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Np4Sn8 cuboctahedra, edges with eight equivalent Np(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Np4Sn8 cuboctahedra, faces with four equivalent Np(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)Np4Sn8 cuboctahedra. is represented by the CIF card [CIF]
data_NpSn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.698
_cell_length_b   4.698
_cell_length_c   4.698
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   103.711
_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
  Np  Np0  1  0.000  0.000  0.000  1.0
  Sn  Sn1  1  0.500  0.000  0.500  1.0
  Sn  Sn2  1  0.000  0.500  0.500  1.0
  Sn  Sn3  1  0.500  0.500  0.000  1.0
[/CIF]
.
The crystal structure described by NpSn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Sn(1) atoms to form NpSn12 cuboctahedra that share corners with twelve equivalent Np(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)Np4Sn8 cuboctahedra, faces with six equivalent Np(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)Np4Sn8 cuboctahedra. Sn(1) is bonded to four equivalent Np(1) and eight equivalent Sn(1) atoms to form distorted SnNp4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Np4Sn8 cuboctahedra, edges with eight equivalent Np(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Np4Sn8 cuboctahedra, faces with four equivalent Np(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)Np4Sn8 cuboctahedra. is represented by the CIF card [CIF]
data_NpSn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.698
_cell_length_b   4.698
_cell_length_c   4.698
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   103.711
_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
  Np  Np0  1  0.000  0.000  0.000  1.0
  Sn  Sn1  1  0.500  0.000  0.500  1.0
  Sn  Sn2  1  0.000  0.500  0.500  1.0
  Sn  Sn3  1  0.500  0.500  0.000  1.0
[/CIF]
.