The compound described by Rb3NpO9 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(2) atoms. Np(1) is bonded in a distorted octahedral geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent O(4) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one O(4) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Np(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Np(1), one O(1), and one O(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Np(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3NpO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.122
_cell_length_b   8.122
_cell_length_c   7.639
_cell_angle_alpha   83.042
_cell_angle_beta   83.042
_cell_angle_gamma   85.839
_symmetry_Int_Tables_number   1
_cell_volume   495.649
_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
  Rb  Rb0  1  0.576  0.772  0.067  1.0
  Rb  Rb1  1  0.424  0.228  0.933  1.0
  Rb  Rb2  1  0.228  0.424  0.433  1.0
  Rb  Rb3  1  0.772  0.576  0.567  1.0
  Rb  Rb4  1  0.966  0.034  0.750  1.0
  Rb  Rb5  1  0.034  0.966  0.250  1.0
  Np  Np6  1  0.500  0.000  0.500  1.0
  Np  Np7  1  0.000  0.500  0.000  1.0
  O  O8  1  0.398  0.602  0.750  1.0
  O  O9  1  0.602  0.398  0.250  1.0
  O  O10  1  0.739  0.192  0.044  1.0
  O  O11  1  0.261  0.808  0.956  1.0
  O  O12  1  0.808  0.261  0.456  1.0
  O  O13  1  0.192  0.739  0.544  1.0
  O  O14  1  0.316  0.116  0.615  1.0
  O  O15  1  0.684  0.884  0.385  1.0
  O  O16  1  0.884  0.684  0.885  1.0
  O  O17  1  0.116  0.316  0.115  1.0
  O  O18  1  0.648  0.271  0.427  1.0
  O  O19  1  0.352  0.729  0.573  1.0
  O  O20  1  0.729  0.352  0.073  1.0
  O  O21  1  0.271  0.648  0.927  1.0
  O  O22  1  0.602  0.976  0.711  1.0
  O  O23  1  0.398  0.024  0.289  1.0
  O  O24  1  0.024  0.398  0.789  1.0
  O  O25  1  0.976  0.602  0.211  1.0
[/CIF]
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The compound described by Rb3NpO9 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(2) atoms. Np(1) is bonded in a distorted octahedral geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent O(4) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one O(4) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Np(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Np(1), one O(1), and one O(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Np(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3NpO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.122
_cell_length_b   8.122
_cell_length_c   7.639
_cell_angle_alpha   83.042
_cell_angle_beta   83.042
_cell_angle_gamma   85.839
_symmetry_Int_Tables_number   1
_cell_volume   495.649
_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
  Rb  Rb0  1  0.576  0.772  0.067  1.0
  Rb  Rb1  1  0.424  0.228  0.933  1.0
  Rb  Rb2  1  0.228  0.424  0.433  1.0
  Rb  Rb3  1  0.772  0.576  0.567  1.0
  Rb  Rb4  1  0.966  0.034  0.750  1.0
  Rb  Rb5  1  0.034  0.966  0.250  1.0
  Np  Np6  1  0.500  0.000  0.500  1.0
  Np  Np7  1  0.000  0.500  0.000  1.0
  O  O8  1  0.398  0.602  0.750  1.0
  O  O9  1  0.602  0.398  0.250  1.0
  O  O10  1  0.739  0.192  0.044  1.0
  O  O11  1  0.261  0.808  0.956  1.0
  O  O12  1  0.808  0.261  0.456  1.0
  O  O13  1  0.192  0.739  0.544  1.0
  O  O14  1  0.316  0.116  0.615  1.0
  O  O15  1  0.684  0.884  0.385  1.0
  O  O16  1  0.884  0.684  0.885  1.0
  O  O17  1  0.116  0.316  0.115  1.0
  O  O18  1  0.648  0.271  0.427  1.0
  O  O19  1  0.352  0.729  0.573  1.0
  O  O20  1  0.729  0.352  0.073  1.0
  O  O21  1  0.271  0.648  0.927  1.0
  O  O22  1  0.602  0.976  0.711  1.0
  O  O23  1  0.398  0.024  0.289  1.0
  O  O24  1  0.024  0.398  0.789  1.0
  O  O25  1  0.976  0.602  0.211  1.0
[/CIF]
.