The material described by Rb4SbO4 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted RbO5 square pyramids that share corners with three equivalent Sb(1)O4 trigonal pyramids,  an edgeedge with one Rb(3)O5 square pyramid, and  an edgeedge with one Sb(1)O4 trigonal pyramid. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(1), two equivalent O(3), and three equivalent O(4) atoms. Sb(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SbO4 trigonal pyramids that share corners with three equivalent Rb(3)O5 square pyramids and  an edgeedge with one Rb(3)O5 square pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Rb(2), one Rb(3), one Rb(4), two equivalent Rb(1), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing ORb5Sb octahedra. The corner-sharing octahedral tilt angles range from 36-49°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(2), and one Sb(1) atom. In the third O site, O(3) is bonded to one Rb(1), one Rb(2), one Rb(3), two equivalent Rb(4), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing ORb5Sb octahedra. The corner-sharing octahedral tilt angles range from 36-53°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Rb(3), three equivalent Rb(4), and one Sb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4SbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.842
_cell_length_b   11.023
_cell_length_c   11.884
_cell_angle_alpha   67.464
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   827.918
_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  0.697  0.938  0.700  1.0
  Rb  Rb1  1  0.173  0.863  0.612  1.0
  Rb  Rb2  1  0.395  0.659  0.909  1.0
  Rb  Rb3  1  0.803  0.938  0.200  1.0
  Rb  Rb4  1  0.327  0.863  0.112  1.0
  Rb  Rb5  1  0.898  0.561  0.807  1.0
  Rb  Rb6  1  0.105  0.659  0.409  1.0
  Rb  Rb7  1  0.398  0.439  0.693  1.0
  Rb  Rb8  1  0.602  0.561  0.307  1.0
  Rb  Rb9  1  0.895  0.341  0.591  1.0
  Rb  Rb10  1  0.102  0.439  0.193  1.0
  Rb  Rb11  1  0.673  0.137  0.888  1.0
  Rb  Rb12  1  0.197  0.062  0.800  1.0
  Rb  Rb13  1  0.605  0.341  0.091  1.0
  Rb  Rb14  1  0.827  0.137  0.388  1.0
  Rb  Rb15  1  0.303  0.062  0.300  1.0
  Sb  Sb16  1  0.623  0.757  0.502  1.0
  Sb  Sb17  1  0.877  0.757  0.002  1.0
  Sb  Sb18  1  0.123  0.243  0.998  1.0
  Sb  Sb19  1  0.377  0.243  0.498  1.0
  O  O20  1  0.016  0.797  0.842  1.0
  O  O21  1  0.866  0.862  0.464  1.0
  O  O22  1  0.531  0.709  0.676  1.0
  O  O23  1  0.484  0.797  0.342  1.0
  O  O24  1  0.634  0.862  0.964  1.0
  O  O25  1  0.732  0.587  0.526  1.0
  O  O26  1  0.232  0.413  0.974  1.0
  O  O27  1  0.969  0.709  0.176  1.0
  O  O28  1  0.031  0.291  0.824  1.0
  O  O29  1  0.768  0.587  0.026  1.0
  O  O30  1  0.268  0.413  0.474  1.0
  O  O31  1  0.366  0.138  0.036  1.0
  O  O32  1  0.516  0.203  0.658  1.0
  O  O33  1  0.469  0.291  0.324  1.0
  O  O34  1  0.134  0.138  0.536  1.0
  O  O35  1  0.984  0.203  0.158  1.0
[/CIF]
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The material described by Rb4SbO4 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted RbO5 square pyramids that share corners with three equivalent Sb(1)O4 trigonal pyramids,  an edgeedge with one Rb(3)O5 square pyramid, and  an edgeedge with one Sb(1)O4 trigonal pyramid. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(1), two equivalent O(3), and three equivalent O(4) atoms. Sb(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SbO4 trigonal pyramids that share corners with three equivalent Rb(3)O5 square pyramids and  an edgeedge with one Rb(3)O5 square pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Rb(2), one Rb(3), one Rb(4), two equivalent Rb(1), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing ORb5Sb octahedra. The corner-sharing octahedral tilt angles range from 36-49°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(2), and one Sb(1) atom. In the third O site, O(3) is bonded to one Rb(1), one Rb(2), one Rb(3), two equivalent Rb(4), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing ORb5Sb octahedra. The corner-sharing octahedral tilt angles range from 36-53°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Rb(3), three equivalent Rb(4), and one Sb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4SbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.842
_cell_length_b   11.023
_cell_length_c   11.884
_cell_angle_alpha   67.464
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   827.918
_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  0.697  0.938  0.700  1.0
  Rb  Rb1  1  0.173  0.863  0.612  1.0
  Rb  Rb2  1  0.395  0.659  0.909  1.0
  Rb  Rb3  1  0.803  0.938  0.200  1.0
  Rb  Rb4  1  0.327  0.863  0.112  1.0
  Rb  Rb5  1  0.898  0.561  0.807  1.0
  Rb  Rb6  1  0.105  0.659  0.409  1.0
  Rb  Rb7  1  0.398  0.439  0.693  1.0
  Rb  Rb8  1  0.602  0.561  0.307  1.0
  Rb  Rb9  1  0.895  0.341  0.591  1.0
  Rb  Rb10  1  0.102  0.439  0.193  1.0
  Rb  Rb11  1  0.673  0.137  0.888  1.0
  Rb  Rb12  1  0.197  0.062  0.800  1.0
  Rb  Rb13  1  0.605  0.341  0.091  1.0
  Rb  Rb14  1  0.827  0.137  0.388  1.0
  Rb  Rb15  1  0.303  0.062  0.300  1.0
  Sb  Sb16  1  0.623  0.757  0.502  1.0
  Sb  Sb17  1  0.877  0.757  0.002  1.0
  Sb  Sb18  1  0.123  0.243  0.998  1.0
  Sb  Sb19  1  0.377  0.243  0.498  1.0
  O  O20  1  0.016  0.797  0.842  1.0
  O  O21  1  0.866  0.862  0.464  1.0
  O  O22  1  0.531  0.709  0.676  1.0
  O  O23  1  0.484  0.797  0.342  1.0
  O  O24  1  0.634  0.862  0.964  1.0
  O  O25  1  0.732  0.587  0.526  1.0
  O  O26  1  0.232  0.413  0.974  1.0
  O  O27  1  0.969  0.709  0.176  1.0
  O  O28  1  0.031  0.291  0.824  1.0
  O  O29  1  0.768  0.587  0.026  1.0
  O  O30  1  0.268  0.413  0.474  1.0
  O  O31  1  0.366  0.138  0.036  1.0
  O  O32  1  0.516  0.203  0.658  1.0
  O  O33  1  0.469  0.291  0.324  1.0
  O  O34  1  0.134  0.138  0.536  1.0
  O  O35  1  0.984  0.203  0.158  1.0
[/CIF]
.