The structure described by RbH2PO4 crystallizes in the orthorhombic Fdd2 space group. Rb(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. P(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one H(1) atom. is represented by the CIF file [CIF]
data_RbP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.458
_cell_length_b   6.458
_cell_length_c   6.479
_cell_angle_alpha   108.165
_cell_angle_beta   108.165
_cell_angle_gamma   111.990
_symmetry_Int_Tables_number   1
_cell_volume   207.996
_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  0.235  0.735  0.500  1.0
  Rb  Rb1  1  0.485  0.485  0.000  1.0
  P  P2  1  0.751  0.251  0.500  1.0
  P  P3  1  0.001  0.001  0.000  1.0
  H  H4  1  0.396  0.258  0.418  1.0
  H  H5  1  0.840  0.978  0.582  1.0
  H  H6  1  0.008  0.646  0.918  1.0
  H  H7  1  0.728  0.090  0.082  1.0
  O  O8  1  0.728  0.955  0.942  1.0
  O  O9  1  0.013  0.785  0.058  1.0
  O  O10  1  0.705  0.978  0.442  1.0
  O  O11  1  0.535  0.263  0.558  1.0
  O  O12  1  0.199  0.256  0.230  1.0
  O  O13  1  0.026  0.968  0.770  1.0
  O  O14  1  0.006  0.449  0.730  1.0
  O  O15  1  0.718  0.276  0.270  1.0
[/CIF]
.
The structure described by RbH2PO4 crystallizes in the orthorhombic Fdd2 space group. Rb(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. P(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one H(1) atom. is represented by the CIF file [CIF]
data_RbP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.458
_cell_length_b   6.458
_cell_length_c   6.479
_cell_angle_alpha   108.165
_cell_angle_beta   108.165
_cell_angle_gamma   111.990
_symmetry_Int_Tables_number   1
_cell_volume   207.996
_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  0.235  0.735  0.500  1.0
  Rb  Rb1  1  0.485  0.485  0.000  1.0
  P  P2  1  0.751  0.251  0.500  1.0
  P  P3  1  0.001  0.001  0.000  1.0
  H  H4  1  0.396  0.258  0.418  1.0
  H  H5  1  0.840  0.978  0.582  1.0
  H  H6  1  0.008  0.646  0.918  1.0
  H  H7  1  0.728  0.090  0.082  1.0
  O  O8  1  0.728  0.955  0.942  1.0
  O  O9  1  0.013  0.785  0.058  1.0
  O  O10  1  0.705  0.978  0.442  1.0
  O  O11  1  0.535  0.263  0.558  1.0
  O  O12  1  0.199  0.256  0.230  1.0
  O  O13  1  0.026  0.968  0.770  1.0
  O  O14  1  0.006  0.449  0.730  1.0
  O  O15  1  0.718  0.276  0.270  1.0
[/CIF]
.