The material structure described by RbNbS2O9 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and three equivalent O(7) atoms. Nb(1) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(4), and two equivalent O(6) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(5), one O(7), and two equivalent O(4) atoms. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(6) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1) and one S(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Nb(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Nb(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Nb(1) and one S(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Nb(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to three equivalent Rb(1) and one S(1) atom. is represented by the CIF file [CIF]
data_RbNbS2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.255
_cell_length_b   9.080
_cell_length_c   17.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   843.339
_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
  Rb  Rb0  1  0.750  0.671  0.065  1.0
  Rb  Rb1  1  0.250  0.171  0.435  1.0
  Rb  Rb2  1  0.750  0.829  0.565  1.0
  Rb  Rb3  1  0.250  0.329  0.935  1.0
  Nb  Nb4  1  0.750  0.579  0.310  1.0
  Nb  Nb5  1  0.250  0.079  0.190  1.0
  Nb  Nb6  1  0.750  0.921  0.810  1.0
  Nb  Nb7  1  0.250  0.421  0.690  1.0
  S  S8  1  0.750  0.977  0.305  1.0
  S  S9  1  0.750  0.369  0.570  1.0
  S  S10  1  0.250  0.631  0.430  1.0
  S  S11  1  0.250  0.023  0.695  1.0
  S  S12  1  0.250  0.869  0.930  1.0
  S  S13  1  0.750  0.131  0.070  1.0
  S  S14  1  0.750  0.523  0.805  1.0
  S  S15  1  0.250  0.477  0.195  1.0
  O  O16  1  0.750  0.521  0.547  1.0
  O  O17  1  0.250  0.757  0.989  1.0
  O  O18  1  0.750  0.102  0.840  1.0
  O  O19  1  0.750  0.979  0.047  1.0
  O  O20  1  0.019  0.936  0.723  1.0
  O  O21  1  0.250  0.168  0.731  1.0
  O  O22  1  0.023  0.663  0.378  1.0
  O  O23  1  0.750  0.668  0.769  1.0
  O  O24  1  0.019  0.564  0.223  1.0
  O  O25  1  0.519  0.436  0.777  1.0
  O  O26  1  0.977  0.337  0.622  1.0
  O  O27  1  0.750  0.257  0.511  1.0
  O  O28  1  0.250  0.743  0.489  1.0
  O  O29  1  0.750  0.979  0.387  1.0
  O  O30  1  0.523  0.163  0.122  1.0
  O  O31  1  0.481  0.936  0.723  1.0
  O  O32  1  0.250  0.332  0.231  1.0
  O  O33  1  0.477  0.663  0.378  1.0
  O  O34  1  0.750  0.832  0.269  1.0
  O  O35  1  0.477  0.837  0.878  1.0
  O  O36  1  0.981  0.064  0.277  1.0
  O  O37  1  0.523  0.337  0.622  1.0
  O  O38  1  0.250  0.021  0.613  1.0
  O  O39  1  0.750  0.243  0.011  1.0
  O  O40  1  0.750  0.398  0.340  1.0
  O  O41  1  0.023  0.837  0.878  1.0
  O  O42  1  0.250  0.479  0.453  1.0
  O  O43  1  0.977  0.163  0.122  1.0
  O  O44  1  0.750  0.521  0.887  1.0
  O  O45  1  0.250  0.479  0.113  1.0
  O  O46  1  0.481  0.564  0.223  1.0
  O  O47  1  0.250  0.602  0.660  1.0
  O  O48  1  0.519  0.064  0.277  1.0
  O  O49  1  0.250  0.021  0.953  1.0
  O  O50  1  0.250  0.898  0.160  1.0
  O  O51  1  0.981  0.436  0.777  1.0
[/CIF]
.
The material structure described by RbNbS2O9 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and three equivalent O(7) atoms. Nb(1) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(4), and two equivalent O(6) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(5), one O(7), and two equivalent O(4) atoms. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(6) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1) and one S(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Nb(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Nb(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Nb(1) and one S(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Nb(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to three equivalent Rb(1) and one S(1) atom. is represented by the CIF file [CIF]
data_RbNbS2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.255
_cell_length_b   9.080
_cell_length_c   17.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   843.339
_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
  Rb  Rb0  1  0.750  0.671  0.065  1.0
  Rb  Rb1  1  0.250  0.171  0.435  1.0
  Rb  Rb2  1  0.750  0.829  0.565  1.0
  Rb  Rb3  1  0.250  0.329  0.935  1.0
  Nb  Nb4  1  0.750  0.579  0.310  1.0
  Nb  Nb5  1  0.250  0.079  0.190  1.0
  Nb  Nb6  1  0.750  0.921  0.810  1.0
  Nb  Nb7  1  0.250  0.421  0.690  1.0
  S  S8  1  0.750  0.977  0.305  1.0
  S  S9  1  0.750  0.369  0.570  1.0
  S  S10  1  0.250  0.631  0.430  1.0
  S  S11  1  0.250  0.023  0.695  1.0
  S  S12  1  0.250  0.869  0.930  1.0
  S  S13  1  0.750  0.131  0.070  1.0
  S  S14  1  0.750  0.523  0.805  1.0
  S  S15  1  0.250  0.477  0.195  1.0
  O  O16  1  0.750  0.521  0.547  1.0
  O  O17  1  0.250  0.757  0.989  1.0
  O  O18  1  0.750  0.102  0.840  1.0
  O  O19  1  0.750  0.979  0.047  1.0
  O  O20  1  0.019  0.936  0.723  1.0
  O  O21  1  0.250  0.168  0.731  1.0
  O  O22  1  0.023  0.663  0.378  1.0
  O  O23  1  0.750  0.668  0.769  1.0
  O  O24  1  0.019  0.564  0.223  1.0
  O  O25  1  0.519  0.436  0.777  1.0
  O  O26  1  0.977  0.337  0.622  1.0
  O  O27  1  0.750  0.257  0.511  1.0
  O  O28  1  0.250  0.743  0.489  1.0
  O  O29  1  0.750  0.979  0.387  1.0
  O  O30  1  0.523  0.163  0.122  1.0
  O  O31  1  0.481  0.936  0.723  1.0
  O  O32  1  0.250  0.332  0.231  1.0
  O  O33  1  0.477  0.663  0.378  1.0
  O  O34  1  0.750  0.832  0.269  1.0
  O  O35  1  0.477  0.837  0.878  1.0
  O  O36  1  0.981  0.064  0.277  1.0
  O  O37  1  0.523  0.337  0.622  1.0
  O  O38  1  0.250  0.021  0.613  1.0
  O  O39  1  0.750  0.243  0.011  1.0
  O  O40  1  0.750  0.398  0.340  1.0
  O  O41  1  0.023  0.837  0.878  1.0
  O  O42  1  0.250  0.479  0.453  1.0
  O  O43  1  0.977  0.163  0.122  1.0
  O  O44  1  0.750  0.521  0.887  1.0
  O  O45  1  0.250  0.479  0.113  1.0
  O  O46  1  0.481  0.564  0.223  1.0
  O  O47  1  0.250  0.602  0.660  1.0
  O  O48  1  0.519  0.064  0.277  1.0
  O  O49  1  0.250  0.021  0.953  1.0
  O  O50  1  0.250  0.898  0.160  1.0
  O  O51  1  0.981  0.436  0.777  1.0
[/CIF]
.