The material structure described by NpCl3 crystallizes in the hexagonal P6_3/m space group. Np(1) is bonded in a 9-coordinate geometry to nine equivalent Cl(1) atoms. Cl(1) is bonded in a trigonal non-coplanar geometry to three equivalent Np(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpCl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.421
_cell_length_b   7.421
_cell_length_c   4.312
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   205.675
_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  0.750  1.0
  Np  Np1  1  0.333  0.667  0.250  1.0
  Cl  Cl2  1  0.610  0.696  0.750  1.0
  Cl  Cl3  1  0.914  0.610  0.250  1.0
  Cl  Cl4  1  0.390  0.304  0.250  1.0
  Cl  Cl5  1  0.086  0.390  0.750  1.0
  Cl  Cl6  1  0.304  0.914  0.750  1.0
  Cl  Cl7  1  0.696  0.086  0.250  1.0
[/CIF]
.
The material structure described by NpCl3 crystallizes in the hexagonal P6_3/m space group. Np(1) is bonded in a 9-coordinate geometry to nine equivalent Cl(1) atoms. Cl(1) is bonded in a trigonal non-coplanar geometry to three equivalent Np(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpCl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.421
_cell_length_b   7.421
_cell_length_c   4.312
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   205.675
_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  0.750  1.0
  Np  Np1  1  0.333  0.667  0.250  1.0
  Cl  Cl2  1  0.610  0.696  0.750  1.0
  Cl  Cl3  1  0.914  0.610  0.250  1.0
  Cl  Cl4  1  0.390  0.304  0.250  1.0
  Cl  Cl5  1  0.086  0.390  0.750  1.0
  Cl  Cl6  1  0.304  0.914  0.750  1.0
  Cl  Cl7  1  0.696  0.086  0.250  1.0
[/CIF]
.