The material structure described by Na3NpO10 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form NaO6 octahedra that share corners with four equivalent Np(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. Np(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NpO6 octahedra that share corners with four equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Na(2) and one Np(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Np(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Np(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one O(5) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Na(1), one Na(2), and one O(4) atom. is represented by the CIF file [CIF]
data_Na3NpO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.429
_cell_length_b   5.974
_cell_length_c   7.486
_cell_angle_alpha   72.621
_cell_angle_beta   73.736
_cell_angle_gamma   89.803
_symmetry_Int_Tables_number   1
_cell_volume   221.572
_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
  Na  Na0  1  0.500  0.500  0.000  1.0
  Na  Na1  1  0.707  0.156  0.647  1.0
  Na  Na2  1  0.293  0.844  0.353  1.0
  Np  Np3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.280  0.023  0.764  1.0
  O  O5  1  0.720  0.977  0.236  1.0
  O  O6  1  0.207  0.159  0.110  1.0
  O  O7  1  0.793  0.841  0.890  1.0
  O  O8  1  0.861  0.284  0.870  1.0
  O  O9  1  0.139  0.716  0.130  1.0
  O  O10  1  0.290  0.319  0.441  1.0
  O  O11  1  0.710  0.681  0.559  1.0
  O  O12  1  0.526  0.365  0.352  1.0
  O  O13  1  0.474  0.635  0.648  1.0
[/CIF]
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The material structure described by Na3NpO10 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form NaO6 octahedra that share corners with four equivalent Np(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. Np(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NpO6 octahedra that share corners with four equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Na(2) and one Np(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Np(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Np(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one O(5) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Na(1), one Na(2), and one O(4) atom. is represented by the CIF file [CIF]
data_Na3NpO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.429
_cell_length_b   5.974
_cell_length_c   7.486
_cell_angle_alpha   72.621
_cell_angle_beta   73.736
_cell_angle_gamma   89.803
_symmetry_Int_Tables_number   1
_cell_volume   221.572
_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
  Na  Na0  1  0.500  0.500  0.000  1.0
  Na  Na1  1  0.707  0.156  0.647  1.0
  Na  Na2  1  0.293  0.844  0.353  1.0
  Np  Np3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.280  0.023  0.764  1.0
  O  O5  1  0.720  0.977  0.236  1.0
  O  O6  1  0.207  0.159  0.110  1.0
  O  O7  1  0.793  0.841  0.890  1.0
  O  O8  1  0.861  0.284  0.870  1.0
  O  O9  1  0.139  0.716  0.130  1.0
  O  O10  1  0.290  0.319  0.441  1.0
  O  O11  1  0.710  0.681  0.559  1.0
  O  O12  1  0.526  0.365  0.352  1.0
  O  O13  1  0.474  0.635  0.648  1.0
[/CIF]
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