The compound described by NpSb2 crystallizes in the orthorhombic Cmce space group. Np(1) is bonded in a 9-coordinate geometry to four equivalent Sb(2) and five equivalent Sb(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to five equivalent Np(1) and one Sb(1) atom. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Np(1) and four equivalent Sb(2) atoms. is represented by the CIF card [CIF]
data_NpSb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.351
_cell_length_b   4.351
_cell_length_c   17.248
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.407
_symmetry_Int_Tables_number   1
_cell_volume   326.470
_cell_formula_units_Z   4
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  0.361  0.361  0.892  1.0
  Np  Np1  1  0.639  0.639  0.108  1.0
  Np  Np2  1  0.139  0.139  0.392  1.0
  Np  Np3  1  0.861  0.861  0.608  1.0
  Sb  Sb4  1  0.360  0.360  0.569  1.0
  Sb  Sb5  1  0.640  0.640  0.431  1.0
  Sb  Sb6  1  0.140  0.140  0.069  1.0
  Sb  Sb7  1  0.860  0.860  0.931  1.0
  Sb  Sb8  1  0.372  0.872  0.750  1.0
  Sb  Sb9  1  0.128  0.628  0.250  1.0
  Sb  Sb10  1  0.628  0.128  0.250  1.0
  Sb  Sb11  1  0.872  0.372  0.750  1.0
[/CIF]
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The compound described by NpSb2 crystallizes in the orthorhombic Cmce space group. Np(1) is bonded in a 9-coordinate geometry to four equivalent Sb(2) and five equivalent Sb(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to five equivalent Np(1) and one Sb(1) atom. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Np(1) and four equivalent Sb(2) atoms. is represented by the CIF card [CIF]
data_NpSb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.351
_cell_length_b   4.351
_cell_length_c   17.248
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.407
_symmetry_Int_Tables_number   1
_cell_volume   326.470
_cell_formula_units_Z   4
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  0.361  0.361  0.892  1.0
  Np  Np1  1  0.639  0.639  0.108  1.0
  Np  Np2  1  0.139  0.139  0.392  1.0
  Np  Np3  1  0.861  0.861  0.608  1.0
  Sb  Sb4  1  0.360  0.360  0.569  1.0
  Sb  Sb5  1  0.640  0.640  0.431  1.0
  Sb  Sb6  1  0.140  0.140  0.069  1.0
  Sb  Sb7  1  0.860  0.860  0.931  1.0
  Sb  Sb8  1  0.372  0.872  0.750  1.0
  Sb  Sb9  1  0.128  0.628  0.250  1.0
  Sb  Sb10  1  0.628  0.128  0.250  1.0
  Sb  Sb11  1  0.872  0.372  0.750  1.0
[/CIF]
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