The structure described by Np3H crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Np sites. In the first Np site, Np(1) is bonded in a 10-coordinate geometry to three equivalent Np(1), three equivalent Np(2), and four equivalent H(1) atoms. In the second Np site, Np(2) is bonded in a trigonal planar geometry to six equivalent Np(1) and three equivalent H(1) atoms. H(1) is bonded in a distorted trigonal planar geometry to three equivalent Np(2) and eight equivalent Np(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Np3H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.746
_cell_length_b   3.746
_cell_length_c   9.427
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   114.529
_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  0.333  0.667  0.565  1.0
  Np  Np1  1  0.667  0.333  0.435  1.0
  Np  Np2  1  0.667  0.333  0.065  1.0
  Np  Np3  1  0.333  0.667  0.935  1.0
  Np  Np4  1  0.000  0.000  0.250  1.0
  Np  Np5  1  0.000  0.000  0.750  1.0
  H  H6  1  0.333  0.667  0.250  1.0
  H  H7  1  0.667  0.333  0.750  1.0
[/CIF]
.
The structure described by Np3H crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Np sites. In the first Np site, Np(1) is bonded in a 10-coordinate geometry to three equivalent Np(1), three equivalent Np(2), and four equivalent H(1) atoms. In the second Np site, Np(2) is bonded in a trigonal planar geometry to six equivalent Np(1) and three equivalent H(1) atoms. H(1) is bonded in a distorted trigonal planar geometry to three equivalent Np(2) and eight equivalent Np(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Np3H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.746
_cell_length_b   3.746
_cell_length_c   9.427
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   114.529
_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  0.333  0.667  0.565  1.0
  Np  Np1  1  0.667  0.333  0.435  1.0
  Np  Np2  1  0.667  0.333  0.065  1.0
  Np  Np3  1  0.333  0.667  0.935  1.0
  Np  Np4  1  0.000  0.000  0.250  1.0
  Np  Np5  1  0.000  0.000  0.750  1.0
  H  H6  1  0.333  0.667  0.250  1.0
  H  H7  1  0.667  0.333  0.750  1.0
[/CIF]
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