The structure described by KH2PO4 crystallizes in the tetragonal I-4 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent H(1), one O(1), two equivalent O(4), and three equivalent O(2) atoms. P(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form corner-sharing PO4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to two equivalent K(1) and one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent K(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the fourth O site, O(4) is bonded in a water-like geometry to two equivalent K(1), one H(1), and one H(2) atom. is represented by the CIF card [CIF]
data_KP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.269
_cell_length_b   8.269
_cell_length_c   8.269
_cell_angle_alpha   113.021
_cell_angle_beta   113.021
_cell_angle_gamma   102.584
_symmetry_Int_Tables_number   1
_cell_volume   430.659
_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
  K  K0  1  0.325  0.622  0.214  1.0
  K  K1  1  0.408  0.111  0.786  1.0
  K  K2  1  0.889  0.675  0.296  1.0
  K  K3  1  0.378  0.592  0.704  1.0
  P  P4  1  0.071  0.780  0.852  1.0
  P  P5  1  0.928  0.220  0.148  1.0
  P  P6  1  0.780  0.929  0.709  1.0
  P  P7  1  0.220  0.072  0.291  1.0
  H  H8  1  0.596  0.366  0.698  1.0
  H  H9  1  0.668  0.898  0.302  1.0
  H  H10  1  0.102  0.404  0.770  1.0
  H  H11  1  0.634  0.332  0.230  1.0
  H  H12  1  0.817  0.480  0.863  1.0
  H  H13  1  0.617  0.954  0.137  1.0
  H  H14  1  0.046  0.183  0.663  1.0
  H  H15  1  0.520  0.383  0.337  1.0
  O  O16  1  0.728  0.166  0.118  1.0
  O  O17  1  0.048  0.610  0.882  1.0
  O  O18  1  0.390  0.272  0.438  1.0
  O  O19  1  0.834  0.952  0.562  1.0
  O  O20  1  0.148  0.792  0.718  1.0
  O  O21  1  0.074  0.429  0.282  1.0
  O  O22  1  0.571  0.852  0.644  1.0
  O  O23  1  0.208  0.926  0.356  1.0
  O  O24  1  0.861  0.786  0.773  1.0
  O  O25  1  0.013  0.087  0.227  1.0
  O  O26  1  0.913  0.139  0.926  1.0
  O  O27  1  0.214  0.987  0.074  1.0
  O  O28  1  0.689  0.431  0.848  1.0
  O  O29  1  0.582  0.841  0.152  1.0
  O  O30  1  0.159  0.311  0.742  1.0
  O  O31  1  0.569  0.418  0.258  1.0
[/CIF]
.
The structure described by KH2PO4 crystallizes in the tetragonal I-4 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent H(1), one O(1), two equivalent O(4), and three equivalent O(2) atoms. P(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form corner-sharing PO4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to two equivalent K(1) and one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent K(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the fourth O site, O(4) is bonded in a water-like geometry to two equivalent K(1), one H(1), and one H(2) atom. is represented by the CIF card [CIF]
data_KP(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.269
_cell_length_b   8.269
_cell_length_c   8.269
_cell_angle_alpha   113.021
_cell_angle_beta   113.021
_cell_angle_gamma   102.584
_symmetry_Int_Tables_number   1
_cell_volume   430.659
_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
  K  K0  1  0.325  0.622  0.214  1.0
  K  K1  1  0.408  0.111  0.786  1.0
  K  K2  1  0.889  0.675  0.296  1.0
  K  K3  1  0.378  0.592  0.704  1.0
  P  P4  1  0.071  0.780  0.852  1.0
  P  P5  1  0.928  0.220  0.148  1.0
  P  P6  1  0.780  0.929  0.709  1.0
  P  P7  1  0.220  0.072  0.291  1.0
  H  H8  1  0.596  0.366  0.698  1.0
  H  H9  1  0.668  0.898  0.302  1.0
  H  H10  1  0.102  0.404  0.770  1.0
  H  H11  1  0.634  0.332  0.230  1.0
  H  H12  1  0.817  0.480  0.863  1.0
  H  H13  1  0.617  0.954  0.137  1.0
  H  H14  1  0.046  0.183  0.663  1.0
  H  H15  1  0.520  0.383  0.337  1.0
  O  O16  1  0.728  0.166  0.118  1.0
  O  O17  1  0.048  0.610  0.882  1.0
  O  O18  1  0.390  0.272  0.438  1.0
  O  O19  1  0.834  0.952  0.562  1.0
  O  O20  1  0.148  0.792  0.718  1.0
  O  O21  1  0.074  0.429  0.282  1.0
  O  O22  1  0.571  0.852  0.644  1.0
  O  O23  1  0.208  0.926  0.356  1.0
  O  O24  1  0.861  0.786  0.773  1.0
  O  O25  1  0.013  0.087  0.227  1.0
  O  O26  1  0.913  0.139  0.926  1.0
  O  O27  1  0.214  0.987  0.074  1.0
  O  O28  1  0.689  0.431  0.848  1.0
  O  O29  1  0.582  0.841  0.152  1.0
  O  O30  1  0.159  0.311  0.742  1.0
  O  O31  1  0.569  0.418  0.258  1.0
[/CIF]
.