data_LiNp2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.27
_cell_length_b   5.27
_cell_length_c   5.27
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiNp2Pb
_chemical_formula_sum   'Li1 Np2 Pb1'
_cell_volume   103.27
_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
  Li  Li0  1  0.0  0.0  0.0  1.0
  Np  Np1  1  0.59  0.59  0.59  1.0
  Np  Np2  1  0.86  0.86  0.86  1.0
  Pb  Pb3  1  0.72  0.72  0.72  1.0

data_LiNp2Pb
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.27
_cell_length_b   5.27
_cell_length_c   12.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LiNp2Pb
_chemical_formula_sum   'Li3 Np6 Pb3'
_cell_volume   309.8
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Li  Li0  3  0.0  0.0  0.0  1.0
  Np  Np1  3  0.0  0.0  0.14  1.0
  Np  Np2  3  0.0  0.0  0.41  1.0
  Pb  Pb3  3  0.0  0.0  0.28  1.0

Li Np Np Pb
LiNp2Pb is Copper structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three LiNp2Pb clusters. Li(1) is bonded in a distorted single-bond geometry to one Np(2) atom. The Li(1)-Np(2) bond length is 1.78 Å. There are two inequivalent Np sites. In the first Np site, Np(1) is bonded in a single-bond geometry to one Pb(1) atom. The Np(1)-Pb(1) bond length is 1.78 Å. In the second Np site, Np(2) is bonded in a linear geometry to one Li(1) and one Pb(1) atom. The Np(2)-Pb(1) bond length is 1.78 Å. Pb(1) is bonded in a distorted linear geometry to one Np(1) and one Np(2) atom.