The compound described by NpCO4 crystallizes in the tetragonal P4_1 space group. Np(1) is bonded to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form a mixture of distorted edge and corner-sharing NpO7 pentagonal bipyramids. C(1) is bonded in a distorted bent 150 degrees geometry to one O(3) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Np(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Np(1) atoms. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Np(1) and one C(1) atom. is represented by the CIF file [CIF]
data_NpCO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.770
_cell_length_b   6.770
_cell_length_c   8.320
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   381.329
_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  0.749  0.228  0.994  1.0
  Np  Np1  1  0.251  0.772  0.494  1.0
  Np  Np2  1  0.228  0.251  0.744  1.0
  Np  Np3  1  0.772  0.749  0.244  1.0
  C  C4  1  0.252  0.230  0.144  1.0
  C  C5  1  0.748  0.770  0.644  1.0
  C  C6  1  0.230  0.748  0.894  1.0
  C  C7  1  0.770  0.252  0.394  1.0
  O  O8  1  0.745  0.950  0.001  1.0
  O  O9  1  0.255  0.050  0.501  1.0
  O  O10  1  0.950  0.255  0.751  1.0
  O  O11  1  0.050  0.745  0.251  1.0
  O  O12  1  0.502  0.239  0.787  1.0
  O  O13  1  0.498  0.761  0.287  1.0
  O  O14  1  0.239  0.498  0.537  1.0
  O  O15  1  0.761  0.502  0.037  1.0
  O  O16  1  0.432  0.245  0.143  1.0
  O  O17  1  0.568  0.755  0.643  1.0
  O  O18  1  0.245  0.568  0.893  1.0
  O  O19  1  0.755  0.432  0.393  1.0
  O  O20  1  0.122  0.205  0.039  1.0
  O  O21  1  0.878  0.795  0.539  1.0
  O  O22  1  0.205  0.878  0.789  1.0
  O  O23  1  0.795  0.122  0.289  1.0
[/CIF]
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The compound described by NpCO4 crystallizes in the tetragonal P4_1 space group. Np(1) is bonded to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form a mixture of distorted edge and corner-sharing NpO7 pentagonal bipyramids. C(1) is bonded in a distorted bent 150 degrees geometry to one O(3) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Np(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Np(1) atoms. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Np(1) and one C(1) atom. is represented by the CIF file [CIF]
data_NpCO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.770
_cell_length_b   6.770
_cell_length_c   8.320
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   381.329
_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  0.749  0.228  0.994  1.0
  Np  Np1  1  0.251  0.772  0.494  1.0
  Np  Np2  1  0.228  0.251  0.744  1.0
  Np  Np3  1  0.772  0.749  0.244  1.0
  C  C4  1  0.252  0.230  0.144  1.0
  C  C5  1  0.748  0.770  0.644  1.0
  C  C6  1  0.230  0.748  0.894  1.0
  C  C7  1  0.770  0.252  0.394  1.0
  O  O8  1  0.745  0.950  0.001  1.0
  O  O9  1  0.255  0.050  0.501  1.0
  O  O10  1  0.950  0.255  0.751  1.0
  O  O11  1  0.050  0.745  0.251  1.0
  O  O12  1  0.502  0.239  0.787  1.0
  O  O13  1  0.498  0.761  0.287  1.0
  O  O14  1  0.239  0.498  0.537  1.0
  O  O15  1  0.761  0.502  0.037  1.0
  O  O16  1  0.432  0.245  0.143  1.0
  O  O17  1  0.568  0.755  0.643  1.0
  O  O18  1  0.245  0.568  0.893  1.0
  O  O19  1  0.755  0.432  0.393  1.0
  O  O20  1  0.122  0.205  0.039  1.0
  O  O21  1  0.878  0.795  0.539  1.0
  O  O22  1  0.205  0.878  0.789  1.0
  O  O23  1  0.795  0.122  0.289  1.0
[/CIF]
.