The material structure described by Rb2Sb4O11 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(6), two equivalent O(7), and four equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2), one O(5), four equivalent O(1), and four equivalent O(6) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(8), two equivalent O(6), and two equivalent O(7) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the second Sb site, Sb(2) is bonded to one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 32-47°. In the third Sb site, Sb(3) is bonded to one O(2), one O(4), two equivalent O(3), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a trigonal planar geometry to one Sb(1) and two equivalent Sb(3) atoms. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(2) and two equivalent Sb(2) atoms. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(1), and one Sb(3) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Sb(2), and one Sb(3) atom. In the fifth O site, O(4) is bonded in a distorted T-shaped geometry to one Sb(3) and two equivalent Sb(2) atoms. In the sixth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), and two equivalent Sb(2) atoms. In the seventh O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Rb(1), two equivalent Rb(2), one Sb(1), and one Sb(2) atom. In the eighth O site, O(7) is bonded in a distorted water-like geometry to two equivalent Rb(1) and two equivalent Sb(1) atoms. is represented by the CIF file [CIF]
data_Rb2Sb4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.503
_cell_length_b   10.503
_cell_length_c   7.238
_cell_angle_alpha   85.098
_cell_angle_beta   85.098
_cell_angle_gamma   42.437
_symmetry_Int_Tables_number   1
_cell_volume   536.520
_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  0.509  0.509  0.745  1.0
  Rb  Rb1  1  0.265  0.265  0.007  1.0
  Rb  Rb2  1  0.491  0.491  0.255  1.0
  Rb  Rb3  1  0.735  0.735  0.993  1.0
  Sb  Sb4  1  0.928  0.928  0.098  1.0
  Sb  Sb5  1  0.431  0.917  0.563  1.0
  Sb  Sb6  1  0.083  0.569  0.437  1.0
  Sb  Sb7  1  0.917  0.431  0.563  1.0
  Sb  Sb8  1  0.924  0.924  0.617  1.0
  Sb  Sb9  1  0.072  0.072  0.902  1.0
  Sb  Sb10  1  0.076  0.076  0.383  1.0
  Sb  Sb11  1  0.569  0.083  0.437  1.0
  O  O12  1  0.051  0.476  0.667  1.0
  O  O13  1  0.117  0.117  0.132  1.0
  O  O14  1  0.476  0.051  0.667  1.0
  O  O15  1  0.165  0.657  0.570  1.0
  O  O16  1  0.833  0.833  0.509  1.0
  O  O17  1  0.339  0.339  0.360  1.0
  O  O18  1  0.326  0.931  0.809  1.0
  O  O19  1  0.829  0.171  1.000  1.0
  O  O20  1  0.657  0.165  0.570  1.0
  O  O21  1  0.674  0.069  0.191  1.0
  O  O22  1  0.167  0.167  0.491  1.0
  O  O23  1  0.835  0.343  0.430  1.0
  O  O24  1  0.069  0.674  0.191  1.0
  O  O25  1  0.171  0.829  1.000  1.0
  O  O26  1  0.524  0.949  0.333  1.0
  O  O27  1  0.931  0.326  0.809  1.0
  O  O28  1  0.661  0.661  0.640  1.0
  O  O29  1  0.976  0.976  0.345  1.0
  O  O30  1  0.949  0.524  0.333  1.0
  O  O31  1  0.343  0.835  0.430  1.0
  O  O32  1  0.024  0.024  0.655  1.0
  O  O33  1  0.883  0.883  0.868  1.0
[/CIF]
.
The material structure described by Rb2Sb4O11 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(6), two equivalent O(7), and four equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2), one O(5), four equivalent O(1), and four equivalent O(6) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(8), two equivalent O(6), and two equivalent O(7) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the second Sb site, Sb(2) is bonded to one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 32-47°. In the third Sb site, Sb(3) is bonded to one O(2), one O(4), two equivalent O(3), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a trigonal planar geometry to one Sb(1) and two equivalent Sb(3) atoms. In the second O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(2) and two equivalent Sb(2) atoms. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(1), and one Sb(3) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Sb(2), and one Sb(3) atom. In the fifth O site, O(4) is bonded in a distorted T-shaped geometry to one Sb(3) and two equivalent Sb(2) atoms. In the sixth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), and two equivalent Sb(2) atoms. In the seventh O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Rb(1), two equivalent Rb(2), one Sb(1), and one Sb(2) atom. In the eighth O site, O(7) is bonded in a distorted water-like geometry to two equivalent Rb(1) and two equivalent Sb(1) atoms. is represented by the CIF file [CIF]
data_Rb2Sb4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.503
_cell_length_b   10.503
_cell_length_c   7.238
_cell_angle_alpha   85.098
_cell_angle_beta   85.098
_cell_angle_gamma   42.437
_symmetry_Int_Tables_number   1
_cell_volume   536.520
_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  0.509  0.509  0.745  1.0
  Rb  Rb1  1  0.265  0.265  0.007  1.0
  Rb  Rb2  1  0.491  0.491  0.255  1.0
  Rb  Rb3  1  0.735  0.735  0.993  1.0
  Sb  Sb4  1  0.928  0.928  0.098  1.0
  Sb  Sb5  1  0.431  0.917  0.563  1.0
  Sb  Sb6  1  0.083  0.569  0.437  1.0
  Sb  Sb7  1  0.917  0.431  0.563  1.0
  Sb  Sb8  1  0.924  0.924  0.617  1.0
  Sb  Sb9  1  0.072  0.072  0.902  1.0
  Sb  Sb10  1  0.076  0.076  0.383  1.0
  Sb  Sb11  1  0.569  0.083  0.437  1.0
  O  O12  1  0.051  0.476  0.667  1.0
  O  O13  1  0.117  0.117  0.132  1.0
  O  O14  1  0.476  0.051  0.667  1.0
  O  O15  1  0.165  0.657  0.570  1.0
  O  O16  1  0.833  0.833  0.509  1.0
  O  O17  1  0.339  0.339  0.360  1.0
  O  O18  1  0.326  0.931  0.809  1.0
  O  O19  1  0.829  0.171  1.000  1.0
  O  O20  1  0.657  0.165  0.570  1.0
  O  O21  1  0.674  0.069  0.191  1.0
  O  O22  1  0.167  0.167  0.491  1.0
  O  O23  1  0.835  0.343  0.430  1.0
  O  O24  1  0.069  0.674  0.191  1.0
  O  O25  1  0.171  0.829  1.000  1.0
  O  O26  1  0.524  0.949  0.333  1.0
  O  O27  1  0.931  0.326  0.809  1.0
  O  O28  1  0.661  0.661  0.640  1.0
  O  O29  1  0.976  0.976  0.345  1.0
  O  O30  1  0.949  0.524  0.333  1.0
  O  O31  1  0.343  0.835  0.430  1.0
  O  O32  1  0.024  0.024  0.655  1.0
  O  O33  1  0.883  0.883  0.868  1.0
[/CIF]
.