The material structure described by Np3Ho is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to eight equivalent Np(1) and four equivalent Ho(1) atoms to form NpHo4Np8 cuboctahedra that share corners with twelve equivalent Np(1)Ho4Np8 cuboctahedra, edges with eight equivalent Ho(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Ho4Np8 cuboctahedra, faces with four equivalent Ho(1)Np12 cuboctahedra, and faces with fourteen equivalent Np(1)Ho4Np8 cuboctahedra. Ho(1) is bonded to twelve equivalent Np(1) atoms to form HoNp12 cuboctahedra that share corners with twelve equivalent Ho(1)Np12 cuboctahedra, edges with twenty-four equivalent Np(1)Ho4Np8 cuboctahedra, faces with six equivalent Ho(1)Np12 cuboctahedra, and faces with twelve equivalent Np(1)Ho4Np8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoNp3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.639
_cell_length_b   4.639
_cell_length_c   4.639
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   99.813
_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
  Ho  Ho0  1  0.000  0.000  0.000  1.0
  Np  Np1  1  0.500  0.000  0.500  1.0
  Np  Np2  1  0.000  0.500  0.500  1.0
  Np  Np3  1  0.500  0.500  0.000  1.0
[/CIF]
.
The material structure described by Np3Ho is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to eight equivalent Np(1) and four equivalent Ho(1) atoms to form NpHo4Np8 cuboctahedra that share corners with twelve equivalent Np(1)Ho4Np8 cuboctahedra, edges with eight equivalent Ho(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Ho4Np8 cuboctahedra, faces with four equivalent Ho(1)Np12 cuboctahedra, and faces with fourteen equivalent Np(1)Ho4Np8 cuboctahedra. Ho(1) is bonded to twelve equivalent Np(1) atoms to form HoNp12 cuboctahedra that share corners with twelve equivalent Ho(1)Np12 cuboctahedra, edges with twenty-four equivalent Np(1)Ho4Np8 cuboctahedra, faces with six equivalent Ho(1)Np12 cuboctahedra, and faces with twelve equivalent Np(1)Ho4Np8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoNp3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.639
_cell_length_b   4.639
_cell_length_c   4.639
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   99.813
_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
  Ho  Ho0  1  0.000  0.000  0.000  1.0
  Np  Np1  1  0.500  0.000  0.500  1.0
  Np  Np2  1  0.000  0.500  0.500  1.0
  Np  Np3  1  0.500  0.500  0.000  1.0
[/CIF]
.