The crystal structure described by CsH2PO4 crystallizes in the monoclinic P2_1/m space group. Cs(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. In the second H site, H(2) is bonded in a linear geometry to two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cs(1), one P(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one P(1), and one H(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cs(1), one P(1), and one H(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.949
_cell_length_b   6.589
_cell_length_c   8.039
_cell_angle_alpha   90.000
_cell_angle_beta   107.820
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   249.577
_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
  Cs  Cs0  1  0.949  0.750  0.732  1.0
  Cs  Cs1  1  0.051  0.250  0.268  1.0
  P  P2  1  0.468  0.250  0.770  1.0
  P  P3  1  0.532  0.750  0.230  1.0
  H  H4  1  0.828  0.250  0.655  1.0
  H  H5  1  0.172  0.750  0.345  1.0
  H  H6  1  0.500  0.000  0.000  1.0
  H  H7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.612  0.250  0.617  1.0
  O  O9  1  0.388  0.750  0.383  1.0
  O  O10  1  0.150  0.250  0.682  1.0
  O  O11  1  0.850  0.750  0.318  1.0
  O  O12  1  0.580  0.056  0.880  1.0
  O  O13  1  0.420  0.556  0.120  1.0
  O  O14  1  0.420  0.944  0.120  1.0
  O  O15  1  0.580  0.444  0.880  1.0
[/CIF]
.
The crystal structure described by CsH2PO4 crystallizes in the monoclinic P2_1/m space group. Cs(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. In the second H site, H(2) is bonded in a linear geometry to two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cs(1), one P(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one P(1), and one H(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cs(1), one P(1), and one H(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.949
_cell_length_b   6.589
_cell_length_c   8.039
_cell_angle_alpha   90.000
_cell_angle_beta   107.820
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   249.577
_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
  Cs  Cs0  1  0.949  0.750  0.732  1.0
  Cs  Cs1  1  0.051  0.250  0.268  1.0
  P  P2  1  0.468  0.250  0.770  1.0
  P  P3  1  0.532  0.750  0.230  1.0
  H  H4  1  0.828  0.250  0.655  1.0
  H  H5  1  0.172  0.750  0.345  1.0
  H  H6  1  0.500  0.000  0.000  1.0
  H  H7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.612  0.250  0.617  1.0
  O  O9  1  0.388  0.750  0.383  1.0
  O  O10  1  0.150  0.250  0.682  1.0
  O  O11  1  0.850  0.750  0.318  1.0
  O  O12  1  0.580  0.056  0.880  1.0
  O  O13  1  0.420  0.556  0.120  1.0
  O  O14  1  0.420  0.944  0.120  1.0
  O  O15  1  0.580  0.444  0.880  1.0
[/CIF]
.