The material described by NpCo3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Np(1) is bonded to twelve equivalent Co(1) atoms to form NpCo12 cuboctahedra that share corners with six equivalent Np(1)Co12 cuboctahedra, corners with twelve equivalent Co(1)Np4Co8 cuboctahedra, edges with eighteen equivalent Co(1)Np4Co8 cuboctahedra, faces with eight equivalent Np(1)Co12 cuboctahedra, and faces with twelve equivalent Co(1)Np4Co8 cuboctahedra. Co(1) is bonded to four equivalent Np(1) and eight equivalent Co(1) atoms to form distorted CoNp4Co8 cuboctahedra that share corners with four equivalent Np(1)Co12 cuboctahedra, corners with fourteen equivalent Co(1)Np4Co8 cuboctahedra, edges with six equivalent Np(1)Co12 cuboctahedra, edges with twelve equivalent Co(1)Np4Co8 cuboctahedra, faces with four equivalent Np(1)Co12 cuboctahedra, and faces with sixteen equivalent Co(1)Np4Co8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.215
_cell_length_b   5.220
_cell_length_c   4.369
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.063
_symmetry_Int_Tables_number   1
_cell_volume   102.911
_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  0.250  1.0
  Np  Np1  1  0.333  0.667  0.750  1.0
  Co  Co2  1  0.838  0.162  0.750  1.0
  Co  Co3  1  0.324  0.162  0.750  1.0
  Co  Co4  1  0.838  0.676  0.750  1.0
  Co  Co5  1  0.162  0.838  0.250  1.0
  Co  Co6  1  0.676  0.838  0.250  1.0
  Co  Co7  1  0.162  0.324  0.250  1.0
[/CIF]
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The material described by NpCo3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Np(1) is bonded to twelve equivalent Co(1) atoms to form NpCo12 cuboctahedra that share corners with six equivalent Np(1)Co12 cuboctahedra, corners with twelve equivalent Co(1)Np4Co8 cuboctahedra, edges with eighteen equivalent Co(1)Np4Co8 cuboctahedra, faces with eight equivalent Np(1)Co12 cuboctahedra, and faces with twelve equivalent Co(1)Np4Co8 cuboctahedra. Co(1) is bonded to four equivalent Np(1) and eight equivalent Co(1) atoms to form distorted CoNp4Co8 cuboctahedra that share corners with four equivalent Np(1)Co12 cuboctahedra, corners with fourteen equivalent Co(1)Np4Co8 cuboctahedra, edges with six equivalent Np(1)Co12 cuboctahedra, edges with twelve equivalent Co(1)Np4Co8 cuboctahedra, faces with four equivalent Np(1)Co12 cuboctahedra, and faces with sixteen equivalent Co(1)Np4Co8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.215
_cell_length_b   5.220
_cell_length_c   4.369
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.063
_symmetry_Int_Tables_number   1
_cell_volume   102.911
_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  0.250  1.0
  Np  Np1  1  0.333  0.667  0.750  1.0
  Co  Co2  1  0.838  0.162  0.750  1.0
  Co  Co3  1  0.324  0.162  0.750  1.0
  Co  Co4  1  0.838  0.676  0.750  1.0
  Co  Co5  1  0.162  0.838  0.250  1.0
  Co  Co6  1  0.676  0.838  0.250  1.0
  Co  Co7  1  0.162  0.324  0.250  1.0
[/CIF]
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