The material described by RbOs2O9 crystallizes in the orthorhombic Pna2_1 space group. Rb(1) is bonded in a 14-coordinate geometry to one O(4), one O(5), one O(8), one O(9), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted corner-sharing OsO5 trigonal bipyramids. In the second Os site, Os(2) is bonded to one O(1), one O(2), one O(5), one O(7), and one O(9) atom to form distorted corner-sharing OsO5 trigonal bipyramids. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(1) atom. In the second O site, O(7) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the third O site, O(8) is bonded in a single-bond geometry to one Rb(1) and one Os(1) atom. In the fourth O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the fifth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Os(1), and one Os(2) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the seventh O site, O(3) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(1) atom. In the eighth O site, O(4) is bonded in a single-bond geometry to one Rb(1) and one Os(1) atom. In the ninth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1) and one Os(2) atom. is represented by the CIF card [CIF]
data_RbOs2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.895
_cell_length_b   10.679
_cell_length_c   13.534
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   851.907
_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  0.253  0.617  0.830  1.0
  Rb  Rb1  1  0.747  0.383  0.330  1.0
  Rb  Rb2  1  0.753  0.883  0.330  1.0
  Rb  Rb3  1  0.247  0.117  0.830  1.0
  Os  Os4  1  0.190  0.601  0.495  1.0
  Os  Os5  1  0.810  0.399  0.995  1.0
  Os  Os6  1  0.690  0.899  0.995  1.0
  Os  Os7  1  0.310  0.101  0.495  1.0
  Os  Os8  1  0.290  0.686  0.179  1.0
  Os  Os9  1  0.710  0.314  0.679  1.0
  Os  Os10  1  0.790  0.814  0.679  1.0
  Os  Os11  1  0.210  0.186  0.179  1.0
  O  O12  1  0.265  0.849  0.190  1.0
  O  O13  1  0.735  0.151  0.690  1.0
  O  O14  1  0.765  0.651  0.690  1.0
  O  O15  1  0.235  0.349  0.190  1.0
  O  O16  1  0.493  0.618  0.255  1.0
  O  O17  1  0.507  0.382  0.755  1.0
  O  O18  1  0.993  0.882  0.755  1.0
  O  O19  1  0.007  0.118  0.255  1.0
  O  O20  1  0.415  0.866  0.956  1.0
  O  O21  1  0.585  0.134  0.456  1.0
  O  O22  1  0.915  0.634  0.456  1.0
  O  O23  1  0.085  0.366  0.956  1.0
  O  O24  1  0.392  0.711  0.461  1.0
  O  O25  1  0.608  0.289  0.961  1.0
  O  O26  1  0.892  0.789  0.961  1.0
  O  O27  1  0.108  0.211  0.461  1.0
  O  O28  1  0.258  0.618  0.064  1.0
  O  O29  1  0.742  0.382  0.564  1.0
  O  O30  1  0.758  0.882  0.564  1.0
  O  O31  1  0.242  0.118  0.064  1.0
  O  O32  1  0.243  0.977  0.416  1.0
  O  O33  1  0.757  0.023  0.916  1.0
  O  O34  1  0.743  0.523  0.916  1.0
  O  O35  1  0.257  0.477  0.416  1.0
  O  O36  1  0.542  0.860  0.739  1.0
  O  O37  1  0.458  0.140  0.239  1.0
  O  O38  1  0.042  0.640  0.239  1.0
  O  O39  1  0.958  0.360  0.739  1.0
  O  O40  1  0.227  0.529  0.610  1.0
  O  O41  1  0.773  0.471  0.110  1.0
  O  O42  1  0.727  0.971  0.110  1.0
  O  O43  1  0.273  0.029  0.610  1.0
  O  O44  1  0.114  0.743  0.609  1.0
  O  O45  1  0.886  0.257  0.109  1.0
  O  O46  1  0.614  0.757  0.109  1.0
  O  O47  1  0.386  0.243  0.609  1.0
[/CIF]
.
The material described by RbOs2O9 crystallizes in the orthorhombic Pna2_1 space group. Rb(1) is bonded in a 14-coordinate geometry to one O(4), one O(5), one O(8), one O(9), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted corner-sharing OsO5 trigonal bipyramids. In the second Os site, Os(2) is bonded to one O(1), one O(2), one O(5), one O(7), and one O(9) atom to form distorted corner-sharing OsO5 trigonal bipyramids. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(1) atom. In the second O site, O(7) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the third O site, O(8) is bonded in a single-bond geometry to one Rb(1) and one Os(1) atom. In the fourth O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the fifth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Os(1), and one Os(2) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Os(2) atom. In the seventh O site, O(3) is bonded in a single-bond geometry to two equivalent Rb(1) and one Os(1) atom. In the eighth O site, O(4) is bonded in a single-bond geometry to one Rb(1) and one Os(1) atom. In the ninth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1) and one Os(2) atom. is represented by the CIF card [CIF]
data_RbOs2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.895
_cell_length_b   10.679
_cell_length_c   13.534
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   851.907
_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  0.253  0.617  0.830  1.0
  Rb  Rb1  1  0.747  0.383  0.330  1.0
  Rb  Rb2  1  0.753  0.883  0.330  1.0
  Rb  Rb3  1  0.247  0.117  0.830  1.0
  Os  Os4  1  0.190  0.601  0.495  1.0
  Os  Os5  1  0.810  0.399  0.995  1.0
  Os  Os6  1  0.690  0.899  0.995  1.0
  Os  Os7  1  0.310  0.101  0.495  1.0
  Os  Os8  1  0.290  0.686  0.179  1.0
  Os  Os9  1  0.710  0.314  0.679  1.0
  Os  Os10  1  0.790  0.814  0.679  1.0
  Os  Os11  1  0.210  0.186  0.179  1.0
  O  O12  1  0.265  0.849  0.190  1.0
  O  O13  1  0.735  0.151  0.690  1.0
  O  O14  1  0.765  0.651  0.690  1.0
  O  O15  1  0.235  0.349  0.190  1.0
  O  O16  1  0.493  0.618  0.255  1.0
  O  O17  1  0.507  0.382  0.755  1.0
  O  O18  1  0.993  0.882  0.755  1.0
  O  O19  1  0.007  0.118  0.255  1.0
  O  O20  1  0.415  0.866  0.956  1.0
  O  O21  1  0.585  0.134  0.456  1.0
  O  O22  1  0.915  0.634  0.456  1.0
  O  O23  1  0.085  0.366  0.956  1.0
  O  O24  1  0.392  0.711  0.461  1.0
  O  O25  1  0.608  0.289  0.961  1.0
  O  O26  1  0.892  0.789  0.961  1.0
  O  O27  1  0.108  0.211  0.461  1.0
  O  O28  1  0.258  0.618  0.064  1.0
  O  O29  1  0.742  0.382  0.564  1.0
  O  O30  1  0.758  0.882  0.564  1.0
  O  O31  1  0.242  0.118  0.064  1.0
  O  O32  1  0.243  0.977  0.416  1.0
  O  O33  1  0.757  0.023  0.916  1.0
  O  O34  1  0.743  0.523  0.916  1.0
  O  O35  1  0.257  0.477  0.416  1.0
  O  O36  1  0.542  0.860  0.739  1.0
  O  O37  1  0.458  0.140  0.239  1.0
  O  O38  1  0.042  0.640  0.239  1.0
  O  O39  1  0.958  0.360  0.739  1.0
  O  O40  1  0.227  0.529  0.610  1.0
  O  O41  1  0.773  0.471  0.110  1.0
  O  O42  1  0.727  0.971  0.110  1.0
  O  O43  1  0.273  0.029  0.610  1.0
  O  O44  1  0.114  0.743  0.609  1.0
  O  O45  1  0.886  0.257  0.109  1.0
  O  O46  1  0.614  0.757  0.109  1.0
  O  O47  1  0.386  0.243  0.609  1.0
[/CIF]
.