The material structure described by NaNp3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded to four equivalent Np(2) and eight equivalent Np(1) atoms to form NaNp12 cuboctahedra that share corners with four equivalent Na(1)Np12 cuboctahedra, corners with eight equivalent Np(2)Na4Np8 cuboctahedra, edges with eight equivalent Na(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Na4Np8 cuboctahedra, faces with four equivalent Na(1)Np12 cuboctahedra, faces with six equivalent Np(2)Na4Np8 cuboctahedra, and faces with eight equivalent Np(1)Na4Np8 cuboctahedra. There are two inequivalent Np sites. In the first Np site, Np(1) is bonded to four equivalent Na(1), four equivalent Np(1), and four equivalent Np(2) atoms to form distorted NpNa4Np8 cuboctahedra that share corners with twelve equivalent Np(1)Na4Np8 cuboctahedra, edges with eight equivalent Na(1)Np12 cuboctahedra, edges with eight equivalent Np(1)Na4Np8 cuboctahedra, edges with eight equivalent Np(2)Na4Np8 cuboctahedra, faces with four equivalent Na(1)Np12 cuboctahedra, faces with four equivalent Np(2)Na4Np8 cuboctahedra, and faces with ten equivalent Np(1)Na4Np8 cuboctahedra. In the second Np site, Np(2) is bonded to four equivalent Na(1) and eight equivalent Np(1) atoms to form NpNa4Np8 cuboctahedra that share corners with four equivalent Np(2)Na4Np8 cuboctahedra, corners with eight equivalent Na(1)Np12 cuboctahedra, edges with eight equivalent Np(2)Na4Np8 cuboctahedra, edges with sixteen equivalent Np(1)Na4Np8 cuboctahedra, faces with four equivalent Np(2)Na4Np8 cuboctahedra, faces with six equivalent Na(1)Np12 cuboctahedra, and faces with eight equivalent Np(1)Na4Np8 cuboctahedra. is represented by the CIF file [CIF]
data_NaNp3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.438
_cell_length_b   5.438
_cell_length_c   5.438
_cell_angle_alpha   129.210
_cell_angle_beta   129.210
_cell_angle_gamma   74.673
_symmetry_Int_Tables_number   1
_cell_volume   94.060
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Np  Np1  1  0.750  0.250  0.500  1.0
  Np  Np2  1  0.250  0.750  0.500  1.0
  Np  Np3  1  0.500  0.500  0.000  1.0
[/CIF]
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The material structure described by NaNp3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded to four equivalent Np(2) and eight equivalent Np(1) atoms to form NaNp12 cuboctahedra that share corners with four equivalent Na(1)Np12 cuboctahedra, corners with eight equivalent Np(2)Na4Np8 cuboctahedra, edges with eight equivalent Na(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Na4Np8 cuboctahedra, faces with four equivalent Na(1)Np12 cuboctahedra, faces with six equivalent Np(2)Na4Np8 cuboctahedra, and faces with eight equivalent Np(1)Na4Np8 cuboctahedra. There are two inequivalent Np sites. In the first Np site, Np(1) is bonded to four equivalent Na(1), four equivalent Np(1), and four equivalent Np(2) atoms to form distorted NpNa4Np8 cuboctahedra that share corners with twelve equivalent Np(1)Na4Np8 cuboctahedra, edges with eight equivalent Na(1)Np12 cuboctahedra, edges with eight equivalent Np(1)Na4Np8 cuboctahedra, edges with eight equivalent Np(2)Na4Np8 cuboctahedra, faces with four equivalent Na(1)Np12 cuboctahedra, faces with four equivalent Np(2)Na4Np8 cuboctahedra, and faces with ten equivalent Np(1)Na4Np8 cuboctahedra. In the second Np site, Np(2) is bonded to four equivalent Na(1) and eight equivalent Np(1) atoms to form NpNa4Np8 cuboctahedra that share corners with four equivalent Np(2)Na4Np8 cuboctahedra, corners with eight equivalent Na(1)Np12 cuboctahedra, edges with eight equivalent Np(2)Na4Np8 cuboctahedra, edges with sixteen equivalent Np(1)Na4Np8 cuboctahedra, faces with four equivalent Np(2)Na4Np8 cuboctahedra, faces with six equivalent Na(1)Np12 cuboctahedra, and faces with eight equivalent Np(1)Na4Np8 cuboctahedra. is represented by the CIF file [CIF]
data_NaNp3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.438
_cell_length_b   5.438
_cell_length_c   5.438
_cell_angle_alpha   129.210
_cell_angle_beta   129.210
_cell_angle_gamma   74.673
_symmetry_Int_Tables_number   1
_cell_volume   94.060
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Np  Np1  1  0.750  0.250  0.500  1.0
  Np  Np2  1  0.250  0.750  0.500  1.0
  Np  Np3  1  0.500  0.500  0.000  1.0
[/CIF]
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