The crystal structure described by Na2NpH2(CO3)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(8), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(6), one O(9), and two equivalent O(7) atoms. Np(1) is bonded to one O(2), one O(4), one O(6), one O(7), one O(8), and two equivalent O(1) atoms to form distorted edge-sharing NpO7 pentagonal bipyramids. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(7) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(6) and one O(8) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Np(1) and one C(2) atom. In the second O site, O(2) is bonded in a 3-coordinate 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 bent 120 degrees geometry to one Na(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Np(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Np(1), and one C(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Np(1), and one C(1) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Na(1), one Np(1), and one C(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Na(2), one H(1), and one H(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2NpH2(CO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.952
_cell_length_b   8.446
_cell_length_c   8.764
_cell_angle_alpha   76.547
_cell_angle_beta   71.046
_cell_angle_gamma   68.759
_symmetry_Int_Tables_number   1
_cell_volume   449.733
_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
  Na  Na0  1  0.510  0.618  0.790  1.0
  Na  Na1  1  0.490  0.382  0.210  1.0
  Na  Na2  1  0.364  0.037  0.821  1.0
  Na  Na3  1  0.636  0.963  0.179  1.0
  Np  Np4  1  0.967  0.837  0.726  1.0
  Np  Np5  1  0.033  0.163  0.274  1.0
  H  H6  1  0.695  0.648  0.409  1.0
  H  H7  1  0.305  0.352  0.591  1.0
  H  H8  1  0.681  0.792  0.501  1.0
  H  H9  1  0.319  0.208  0.499  1.0
  C  C10  1  0.299  0.777  0.157  1.0
  C  C11  1  0.701  0.223  0.843  1.0
  C  C12  1  0.777  0.270  0.656  1.0
  C  C13  1  0.223  0.730  0.344  1.0
  C  C14  1  0.084  0.445  0.934  1.0
  C  C15  1  0.916  0.555  0.066  1.0
  O  O16  1  0.886  0.139  0.577  1.0
  O  O17  1  0.277  0.188  0.300  1.0
  O  O18  1  0.730  0.422  0.595  1.0
  O  O19  1  0.795  0.138  0.245  1.0
  O  O20  1  0.382  0.660  0.069  1.0
  O  O21  1  0.849  0.715  0.023  1.0
  O  O22  1  0.205  0.862  0.755  1.0
  O  O23  1  0.723  0.812  0.700  1.0
  O  O24  1  0.273  0.938  0.106  1.0
  O  O25  1  0.114  0.861  0.423  1.0
  O  O26  1  0.270  0.578  0.405  1.0
  O  O27  1  0.857  0.475  0.206  1.0
  O  O28  1  0.727  0.062  0.894  1.0
  O  O29  1  0.618  0.340  0.931  1.0
  O  O30  1  0.359  0.228  0.589  1.0
  O  O31  1  0.641  0.772  0.411  1.0
  O  O32  1  0.151  0.285  0.977  1.0
  O  O33  1  0.143  0.525  0.794  1.0
[/CIF]
.
The crystal structure described by Na2NpH2(CO3)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(8), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(6), one O(9), and two equivalent O(7) atoms. Np(1) is bonded to one O(2), one O(4), one O(6), one O(7), one O(8), and two equivalent O(1) atoms to form distorted edge-sharing NpO7 pentagonal bipyramids. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(7) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(6) and one O(8) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Np(1) and one C(2) atom. In the second O site, O(2) is bonded in a 3-coordinate 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 bent 120 degrees geometry to one Na(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Np(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Np(1), and one C(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Np(1), and one C(1) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Na(1), one Np(1), and one C(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Na(2), one H(1), and one H(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2NpH2(CO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.952
_cell_length_b   8.446
_cell_length_c   8.764
_cell_angle_alpha   76.547
_cell_angle_beta   71.046
_cell_angle_gamma   68.759
_symmetry_Int_Tables_number   1
_cell_volume   449.733
_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
  Na  Na0  1  0.510  0.618  0.790  1.0
  Na  Na1  1  0.490  0.382  0.210  1.0
  Na  Na2  1  0.364  0.037  0.821  1.0
  Na  Na3  1  0.636  0.963  0.179  1.0
  Np  Np4  1  0.967  0.837  0.726  1.0
  Np  Np5  1  0.033  0.163  0.274  1.0
  H  H6  1  0.695  0.648  0.409  1.0
  H  H7  1  0.305  0.352  0.591  1.0
  H  H8  1  0.681  0.792  0.501  1.0
  H  H9  1  0.319  0.208  0.499  1.0
  C  C10  1  0.299  0.777  0.157  1.0
  C  C11  1  0.701  0.223  0.843  1.0
  C  C12  1  0.777  0.270  0.656  1.0
  C  C13  1  0.223  0.730  0.344  1.0
  C  C14  1  0.084  0.445  0.934  1.0
  C  C15  1  0.916  0.555  0.066  1.0
  O  O16  1  0.886  0.139  0.577  1.0
  O  O17  1  0.277  0.188  0.300  1.0
  O  O18  1  0.730  0.422  0.595  1.0
  O  O19  1  0.795  0.138  0.245  1.0
  O  O20  1  0.382  0.660  0.069  1.0
  O  O21  1  0.849  0.715  0.023  1.0
  O  O22  1  0.205  0.862  0.755  1.0
  O  O23  1  0.723  0.812  0.700  1.0
  O  O24  1  0.273  0.938  0.106  1.0
  O  O25  1  0.114  0.861  0.423  1.0
  O  O26  1  0.270  0.578  0.405  1.0
  O  O27  1  0.857  0.475  0.206  1.0
  O  O28  1  0.727  0.062  0.894  1.0
  O  O29  1  0.618  0.340  0.931  1.0
  O  O30  1  0.359  0.228  0.589  1.0
  O  O31  1  0.641  0.772  0.411  1.0
  O  O32  1  0.151  0.285  0.977  1.0
  O  O33  1  0.143  0.525  0.794  1.0
[/CIF]
.