The crystal structure described by NpSe is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded to six equivalent Se(1) atoms to form a mixture of edge and corner-sharing NpSe6 octahedra. The corner-sharing octahedra are not tilted. Se(1) is bonded to six equivalent Np(1) atoms to form a mixture of edge and corner-sharing SeNp6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NpSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.136
_cell_length_b   4.136
_cell_length_c   4.136
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   50.025
_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
  Se  Se1  1  0.500  0.500  0.500  1.0
[/CIF]
.
The crystal structure described by NpSe is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded to six equivalent Se(1) atoms to form a mixture of edge and corner-sharing NpSe6 octahedra. The corner-sharing octahedra are not tilted. Se(1) is bonded to six equivalent Np(1) atoms to form a mixture of edge and corner-sharing SeNp6 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NpSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.136
_cell_length_b   4.136
_cell_length_c   4.136
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   50.025
_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
  Se  Se1  1  0.500  0.500  0.500  1.0
[/CIF]
.