The crystal structure described by NpBr3 crystallizes in the hexagonal P6_3 space group. Np(1) is bonded in a 9-coordinate geometry to nine equivalent Br(1) atoms. Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Np(1) atoms. is represented by the CIF file [CIF]
data_NpBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.006
_cell_length_b   8.006
_cell_length_c   4.413
_cell_angle_alpha   89.999
_cell_angle_beta   90.003
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   244.918
_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
  Np  Np0  1  0.667  0.333  0.746  1.0
  Np  Np1  1  0.333  0.667  0.246  1.0
  Br  Br2  1  0.612  0.698  0.751  1.0
  Br  Br3  1  0.913  0.612  0.251  1.0
  Br  Br4  1  0.388  0.302  0.251  1.0
  Br  Br5  1  0.087  0.388  0.751  1.0
  Br  Br6  1  0.302  0.913  0.751  1.0
  Br  Br7  1  0.698  0.087  0.251  1.0
[/CIF]
.
The crystal structure described by NpBr3 crystallizes in the hexagonal P6_3 space group. Np(1) is bonded in a 9-coordinate geometry to nine equivalent Br(1) atoms. Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Np(1) atoms. is represented by the CIF file [CIF]
data_NpBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.006
_cell_length_b   8.006
_cell_length_c   4.413
_cell_angle_alpha   89.999
_cell_angle_beta   90.003
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   244.918
_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
  Np  Np0  1  0.667  0.333  0.746  1.0
  Np  Np1  1  0.333  0.667  0.246  1.0
  Br  Br2  1  0.612  0.698  0.751  1.0
  Br  Br3  1  0.913  0.612  0.251  1.0
  Br  Br4  1  0.388  0.302  0.251  1.0
  Br  Br5  1  0.087  0.388  0.751  1.0
  Br  Br6  1  0.302  0.913  0.751  1.0
  Br  Br7  1  0.698  0.087  0.251  1.0
[/CIF]
.