The compound described by Rb4C2O9 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), 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(1), two equivalent O(5), and four equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), and one O(3) atom. In the second O site, O(4) is bonded to one Rb(1), four equivalent Rb(3), and two equivalent O(2) atoms to form distorted edge-sharing ORb5O2 pentagonal bipyramids. In the third O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and one C(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one Rb(3), and one C(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to two equivalent Rb(3), one C(1), and one O(4) atom. is represented by the CIF card [CIF]
data_Rb4C2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.513
_cell_length_b   9.513
_cell_length_c   7.865
_cell_angle_alpha   66.050
_cell_angle_beta   66.050
_cell_angle_gamma   92.386
_symmetry_Int_Tables_number   1
_cell_volume   575.994
_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  0.190  0.810  0.250  1.0
  Rb  Rb1  1  0.810  0.190  0.750  1.0
  Rb  Rb2  1  0.847  0.153  0.250  1.0
  Rb  Rb3  1  0.153  0.847  0.750  1.0
  Rb  Rb4  1  0.551  0.746  0.410  1.0
  Rb  Rb5  1  0.449  0.254  0.590  1.0
  Rb  Rb6  1  0.254  0.449  0.090  1.0
  Rb  Rb7  1  0.746  0.551  0.910  1.0
  C  C8  1  0.484  0.153  0.150  1.0
  C  C9  1  0.516  0.847  0.850  1.0
  C  C10  1  0.847  0.516  0.350  1.0
  C  C11  1  0.153  0.484  0.650  1.0
  O  O12  1  0.382  0.027  0.310  1.0
  O  O13  1  0.618  0.973  0.690  1.0
  O  O14  1  0.973  0.618  0.190  1.0
  O  O15  1  0.027  0.382  0.810  1.0
  O  O16  1  0.551  0.784  0.011  1.0
  O  O17  1  0.449  0.216  0.989  1.0
  O  O18  1  0.216  0.449  0.489  1.0
  O  O19  1  0.784  0.551  0.511  1.0
  O  O20  1  0.930  0.954  0.043  1.0
  O  O21  1  0.070  0.046  0.957  1.0
  O  O22  1  0.046  0.070  0.457  1.0
  O  O23  1  0.954  0.930  0.543  1.0
  O  O24  1  0.406  0.594  0.250  1.0
  O  O25  1  0.594  0.406  0.750  1.0
  O  O26  1  0.612  0.215  0.137  1.0
  O  O27  1  0.388  0.785  0.863  1.0
  O  O28  1  0.785  0.388  0.363  1.0
  O  O29  1  0.215  0.612  0.637  1.0
[/CIF]
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The compound described by Rb4C2O9 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), 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(1), two equivalent O(5), and four equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), and one O(3) atom. In the second O site, O(4) is bonded to one Rb(1), four equivalent Rb(3), and two equivalent O(2) atoms to form distorted edge-sharing ORb5O2 pentagonal bipyramids. In the third O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and one C(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one Rb(3), and one C(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to two equivalent Rb(3), one C(1), and one O(4) atom. is represented by the CIF card [CIF]
data_Rb4C2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.513
_cell_length_b   9.513
_cell_length_c   7.865
_cell_angle_alpha   66.050
_cell_angle_beta   66.050
_cell_angle_gamma   92.386
_symmetry_Int_Tables_number   1
_cell_volume   575.994
_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  0.190  0.810  0.250  1.0
  Rb  Rb1  1  0.810  0.190  0.750  1.0
  Rb  Rb2  1  0.847  0.153  0.250  1.0
  Rb  Rb3  1  0.153  0.847  0.750  1.0
  Rb  Rb4  1  0.551  0.746  0.410  1.0
  Rb  Rb5  1  0.449  0.254  0.590  1.0
  Rb  Rb6  1  0.254  0.449  0.090  1.0
  Rb  Rb7  1  0.746  0.551  0.910  1.0
  C  C8  1  0.484  0.153  0.150  1.0
  C  C9  1  0.516  0.847  0.850  1.0
  C  C10  1  0.847  0.516  0.350  1.0
  C  C11  1  0.153  0.484  0.650  1.0
  O  O12  1  0.382  0.027  0.310  1.0
  O  O13  1  0.618  0.973  0.690  1.0
  O  O14  1  0.973  0.618  0.190  1.0
  O  O15  1  0.027  0.382  0.810  1.0
  O  O16  1  0.551  0.784  0.011  1.0
  O  O17  1  0.449  0.216  0.989  1.0
  O  O18  1  0.216  0.449  0.489  1.0
  O  O19  1  0.784  0.551  0.511  1.0
  O  O20  1  0.930  0.954  0.043  1.0
  O  O21  1  0.070  0.046  0.957  1.0
  O  O22  1  0.046  0.070  0.457  1.0
  O  O23  1  0.954  0.930  0.543  1.0
  O  O24  1  0.406  0.594  0.250  1.0
  O  O25  1  0.594  0.406  0.750  1.0
  O  O26  1  0.612  0.215  0.137  1.0
  O  O27  1  0.388  0.785  0.863  1.0
  O  O28  1  0.785  0.388  0.363  1.0
  O  O29  1  0.215  0.612  0.637  1.0
[/CIF]
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