The material structure described by NpO5I crystallizes in the orthorhombic Pna2_1 space group. Np(1) is bonded to one O(3), one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form distorted corner-sharing NpO7 pentagonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Np(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Np(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Np(1) and one I(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Np(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one I(1) atom. I(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpIO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.534
_cell_length_b   6.017
_cell_length_c   13.847
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   461.041
_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  0.405  0.751  0.970  1.0
  Np  Np1  1  0.905  0.249  0.030  1.0
  Np  Np2  1  0.405  0.749  0.470  1.0
  Np  Np3  1  0.905  0.251  0.530  1.0
  I  I4  1  0.402  0.511  0.218  1.0
  I  I5  1  0.902  0.489  0.782  1.0
  I  I6  1  0.402  0.989  0.718  1.0
  I  I7  1  0.902  0.011  0.282  1.0
  O  O8  1  0.602  0.996  0.988  1.0
  O  O9  1  0.102  0.004  0.012  1.0
  O  O10  1  0.602  0.504  0.488  1.0
  O  O11  1  0.102  0.496  0.512  1.0
  O  O12  1  0.189  0.508  0.953  1.0
  O  O13  1  0.689  0.492  0.047  1.0
  O  O14  1  0.189  0.992  0.453  1.0
  O  O15  1  0.689  0.008  0.547  1.0
  O  O16  1  0.822  0.242  0.359  1.0
  O  O17  1  0.322  0.758  0.641  1.0
  O  O18  1  0.822  0.258  0.859  1.0
  O  O19  1  0.322  0.742  0.141  1.0
  O  O20  1  0.739  0.101  0.176  1.0
  O  O21  1  0.239  0.899  0.824  1.0
  O  O22  1  0.739  0.399  0.676  1.0
  O  O23  1  0.239  0.601  0.324  1.0
  O  O24  1  0.680  0.814  0.327  1.0
  O  O25  1  0.180  0.186  0.673  1.0
  O  O26  1  0.680  0.686  0.827  1.0
  O  O27  1  0.180  0.314  0.173  1.0
[/CIF]
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The material structure described by NpO5I crystallizes in the orthorhombic Pna2_1 space group. Np(1) is bonded to one O(3), one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form distorted corner-sharing NpO7 pentagonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Np(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Np(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Np(1) and one I(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Np(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one I(1) atom. I(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpIO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.534
_cell_length_b   6.017
_cell_length_c   13.847
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   461.041
_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  0.405  0.751  0.970  1.0
  Np  Np1  1  0.905  0.249  0.030  1.0
  Np  Np2  1  0.405  0.749  0.470  1.0
  Np  Np3  1  0.905  0.251  0.530  1.0
  I  I4  1  0.402  0.511  0.218  1.0
  I  I5  1  0.902  0.489  0.782  1.0
  I  I6  1  0.402  0.989  0.718  1.0
  I  I7  1  0.902  0.011  0.282  1.0
  O  O8  1  0.602  0.996  0.988  1.0
  O  O9  1  0.102  0.004  0.012  1.0
  O  O10  1  0.602  0.504  0.488  1.0
  O  O11  1  0.102  0.496  0.512  1.0
  O  O12  1  0.189  0.508  0.953  1.0
  O  O13  1  0.689  0.492  0.047  1.0
  O  O14  1  0.189  0.992  0.453  1.0
  O  O15  1  0.689  0.008  0.547  1.0
  O  O16  1  0.822  0.242  0.359  1.0
  O  O17  1  0.322  0.758  0.641  1.0
  O  O18  1  0.822  0.258  0.859  1.0
  O  O19  1  0.322  0.742  0.141  1.0
  O  O20  1  0.739  0.101  0.176  1.0
  O  O21  1  0.239  0.899  0.824  1.0
  O  O22  1  0.739  0.399  0.676  1.0
  O  O23  1  0.239  0.601  0.324  1.0
  O  O24  1  0.680  0.814  0.327  1.0
  O  O25  1  0.180  0.186  0.673  1.0
  O  O26  1  0.680  0.686  0.827  1.0
  O  O27  1  0.180  0.314  0.173  1.0
[/CIF]
.