The compound described by RbSO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(2), one O(3), one O(8), two equivalent O(4), two equivalent O(7), and three equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(7), one O(8), two equivalent O(3), two equivalent O(6), and three equivalent O(5) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Rb(2) and one S(2) atom. In the second O site, O(6) is bonded in a single-bond geometry to two equivalent Rb(2) and one S(2) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(2) atom. In the fourth O site, O(8) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one S(2) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one S(1) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one S(1) atom. In the seventh O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(1) atom. In the eighth O site, O(4) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(1) atom. is represented by the CIF file [CIF]
data_RbSO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.821
_cell_length_b   14.581
_cell_length_c   15.067
_cell_angle_alpha   58.949
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   907.315
_cell_formula_units_Z   8
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  0.644  0.876  0.919  1.0
  Rb  Rb1  1  0.144  0.124  0.581  1.0
  Rb  Rb2  1  0.356  0.124  0.081  1.0
  Rb  Rb3  1  0.856  0.876  0.419  1.0
  Rb  Rb4  1  0.204  0.624  0.832  1.0
  Rb  Rb5  1  0.704  0.376  0.668  1.0
  Rb  Rb6  1  0.796  0.376  0.168  1.0
  Rb  Rb7  1  0.296  0.624  0.332  1.0
  S  S8  1  0.701  0.876  0.674  1.0
  S  S9  1  0.201  0.124  0.826  1.0
  S  S10  1  0.299  0.124  0.326  1.0
  S  S11  1  0.799  0.876  0.174  1.0
  S  S12  1  0.272  0.625  0.581  1.0
  S  S13  1  0.772  0.375  0.919  1.0
  S  S14  1  0.728  0.375  0.419  1.0
  S  S15  1  0.228  0.625  0.081  1.0
  O  O16  1  0.613  0.969  0.680  1.0
  O  O17  1  0.113  0.031  0.820  1.0
  O  O18  1  0.387  0.031  0.320  1.0
  O  O19  1  0.887  0.969  0.180  1.0
  O  O20  1  0.532  0.862  0.598  1.0
  O  O21  1  0.032  0.138  0.902  1.0
  O  O22  1  0.468  0.138  0.402  1.0
  O  O23  1  0.968  0.862  0.098  1.0
  O  O24  1  0.701  0.777  0.777  1.0
  O  O25  1  0.201  0.223  0.723  1.0
  O  O26  1  0.299  0.223  0.223  1.0
  O  O27  1  0.799  0.777  0.277  1.0
  O  O28  1  0.980  0.897  0.622  1.0
  O  O29  1  0.480  0.103  0.878  1.0
  O  O30  1  0.020  0.103  0.378  1.0
  O  O31  1  0.520  0.897  0.122  1.0
  O  O32  1  0.196  0.534  0.570  1.0
  O  O33  1  0.696  0.466  0.930  1.0
  O  O34  1  0.804  0.466  0.430  1.0
  O  O35  1  0.304  0.534  0.070  1.0
  O  O36  1  0.491  0.593  0.663  1.0
  O  O37  1  0.991  0.407  0.837  1.0
  O  O38  1  0.509  0.407  0.337  1.0
  O  O39  1  0.009  0.593  0.163  1.0
  O  O40  1  0.376  0.716  0.481  1.0
  O  O41  1  0.876  0.284  0.019  1.0
  O  O42  1  0.624  0.284  0.519  1.0
  O  O43  1  0.124  0.716  0.981  1.0
  O  O44  1  0.025  0.662  0.615  1.0
  O  O45  1  0.525  0.338  0.885  1.0
  O  O46  1  0.975  0.338  0.385  1.0
  O  O47  1  0.475  0.662  0.115  1.0
[/CIF]
.
The compound described by RbSO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(2), one O(3), one O(8), two equivalent O(4), two equivalent O(7), and three equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(7), one O(8), two equivalent O(3), two equivalent O(6), and three equivalent O(5) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Rb(2) and one S(2) atom. In the second O site, O(6) is bonded in a single-bond geometry to two equivalent Rb(2) and one S(2) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(2) atom. In the fourth O site, O(8) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one S(2) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one S(1) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one S(1) atom. In the seventh O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(1) atom. In the eighth O site, O(4) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(1) atom. is represented by the CIF file [CIF]
data_RbSO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.821
_cell_length_b   14.581
_cell_length_c   15.067
_cell_angle_alpha   58.949
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   907.315
_cell_formula_units_Z   8
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  0.644  0.876  0.919  1.0
  Rb  Rb1  1  0.144  0.124  0.581  1.0
  Rb  Rb2  1  0.356  0.124  0.081  1.0
  Rb  Rb3  1  0.856  0.876  0.419  1.0
  Rb  Rb4  1  0.204  0.624  0.832  1.0
  Rb  Rb5  1  0.704  0.376  0.668  1.0
  Rb  Rb6  1  0.796  0.376  0.168  1.0
  Rb  Rb7  1  0.296  0.624  0.332  1.0
  S  S8  1  0.701  0.876  0.674  1.0
  S  S9  1  0.201  0.124  0.826  1.0
  S  S10  1  0.299  0.124  0.326  1.0
  S  S11  1  0.799  0.876  0.174  1.0
  S  S12  1  0.272  0.625  0.581  1.0
  S  S13  1  0.772  0.375  0.919  1.0
  S  S14  1  0.728  0.375  0.419  1.0
  S  S15  1  0.228  0.625  0.081  1.0
  O  O16  1  0.613  0.969  0.680  1.0
  O  O17  1  0.113  0.031  0.820  1.0
  O  O18  1  0.387  0.031  0.320  1.0
  O  O19  1  0.887  0.969  0.180  1.0
  O  O20  1  0.532  0.862  0.598  1.0
  O  O21  1  0.032  0.138  0.902  1.0
  O  O22  1  0.468  0.138  0.402  1.0
  O  O23  1  0.968  0.862  0.098  1.0
  O  O24  1  0.701  0.777  0.777  1.0
  O  O25  1  0.201  0.223  0.723  1.0
  O  O26  1  0.299  0.223  0.223  1.0
  O  O27  1  0.799  0.777  0.277  1.0
  O  O28  1  0.980  0.897  0.622  1.0
  O  O29  1  0.480  0.103  0.878  1.0
  O  O30  1  0.020  0.103  0.378  1.0
  O  O31  1  0.520  0.897  0.122  1.0
  O  O32  1  0.196  0.534  0.570  1.0
  O  O33  1  0.696  0.466  0.930  1.0
  O  O34  1  0.804  0.466  0.430  1.0
  O  O35  1  0.304  0.534  0.070  1.0
  O  O36  1  0.491  0.593  0.663  1.0
  O  O37  1  0.991  0.407  0.837  1.0
  O  O38  1  0.509  0.407  0.337  1.0
  O  O39  1  0.009  0.593  0.163  1.0
  O  O40  1  0.376  0.716  0.481  1.0
  O  O41  1  0.876  0.284  0.019  1.0
  O  O42  1  0.624  0.284  0.519  1.0
  O  O43  1  0.124  0.716  0.981  1.0
  O  O44  1  0.025  0.662  0.615  1.0
  O  O45  1  0.525  0.338  0.885  1.0
  O  O46  1  0.975  0.338  0.385  1.0
  O  O47  1  0.475  0.662  0.115  1.0
[/CIF]
.