The structure described by KHSi2O5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. H(1) is bonded in a linear geometry to two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(1) is bonded in a 2-coordinate geometry to one K(1) and two equivalent Si(1) atoms. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Si(1), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSi2HO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.811
_cell_length_b   8.266
_cell_length_c   12.667
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   503.774
_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  0.963  0.250  0.538  1.0
  K  K1  1  0.537  0.250  0.038  1.0
  K  K2  1  0.037  0.750  0.462  1.0
  K  K3  1  0.463  0.750  0.962  1.0
  Si  Si4  1  0.474  0.562  0.687  1.0
  Si  Si5  1  0.026  0.938  0.187  1.0
  Si  Si6  1  0.526  0.062  0.313  1.0
  Si  Si7  1  0.974  0.438  0.813  1.0
  Si  Si8  1  0.526  0.438  0.313  1.0
  Si  Si9  1  0.974  0.062  0.813  1.0
  Si  Si10  1  0.474  0.938  0.687  1.0
  Si  Si11  1  0.026  0.562  0.187  1.0
  H  H12  1  0.500  0.000  0.500  1.0
  H  H13  1  0.000  0.500  0.000  1.0
  H  H14  1  0.500  0.500  0.500  1.0
  H  H15  1  0.000  0.000  0.000  1.0
  O  O16  1  0.246  0.550  0.784  1.0
  O  O17  1  0.254  0.950  0.284  1.0
  O  O18  1  0.754  0.050  0.216  1.0
  O  O19  1  0.746  0.450  0.716  1.0
  O  O20  1  0.754  0.450  0.216  1.0
  O  O21  1  0.746  0.050  0.716  1.0
  O  O22  1  0.246  0.950  0.784  1.0
  O  O23  1  0.254  0.550  0.284  1.0
  O  O24  1  0.345  0.506  0.575  1.0
  O  O25  1  0.155  0.994  0.075  1.0
  O  O26  1  0.655  0.006  0.425  1.0
  O  O27  1  0.845  0.494  0.925  1.0
  O  O28  1  0.655  0.494  0.425  1.0
  O  O29  1  0.845  0.006  0.925  1.0
  O  O30  1  0.345  0.994  0.575  1.0
  O  O31  1  0.155  0.506  0.075  1.0
  O  O32  1  0.088  0.250  0.816  1.0
  O  O33  1  0.412  0.250  0.316  1.0
  O  O34  1  0.912  0.750  0.184  1.0
  O  O35  1  0.588  0.750  0.684  1.0
[/CIF]
.
The structure described by KHSi2O5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. H(1) is bonded in a linear geometry to two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(1) is bonded in a 2-coordinate geometry to one K(1) and two equivalent Si(1) atoms. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Si(1), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSi2HO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.811
_cell_length_b   8.266
_cell_length_c   12.667
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   503.774
_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  0.963  0.250  0.538  1.0
  K  K1  1  0.537  0.250  0.038  1.0
  K  K2  1  0.037  0.750  0.462  1.0
  K  K3  1  0.463  0.750  0.962  1.0
  Si  Si4  1  0.474  0.562  0.687  1.0
  Si  Si5  1  0.026  0.938  0.187  1.0
  Si  Si6  1  0.526  0.062  0.313  1.0
  Si  Si7  1  0.974  0.438  0.813  1.0
  Si  Si8  1  0.526  0.438  0.313  1.0
  Si  Si9  1  0.974  0.062  0.813  1.0
  Si  Si10  1  0.474  0.938  0.687  1.0
  Si  Si11  1  0.026  0.562  0.187  1.0
  H  H12  1  0.500  0.000  0.500  1.0
  H  H13  1  0.000  0.500  0.000  1.0
  H  H14  1  0.500  0.500  0.500  1.0
  H  H15  1  0.000  0.000  0.000  1.0
  O  O16  1  0.246  0.550  0.784  1.0
  O  O17  1  0.254  0.950  0.284  1.0
  O  O18  1  0.754  0.050  0.216  1.0
  O  O19  1  0.746  0.450  0.716  1.0
  O  O20  1  0.754  0.450  0.216  1.0
  O  O21  1  0.746  0.050  0.716  1.0
  O  O22  1  0.246  0.950  0.784  1.0
  O  O23  1  0.254  0.550  0.284  1.0
  O  O24  1  0.345  0.506  0.575  1.0
  O  O25  1  0.155  0.994  0.075  1.0
  O  O26  1  0.655  0.006  0.425  1.0
  O  O27  1  0.845  0.494  0.925  1.0
  O  O28  1  0.655  0.494  0.425  1.0
  O  O29  1  0.845  0.006  0.925  1.0
  O  O30  1  0.345  0.994  0.575  1.0
  O  O31  1  0.155  0.506  0.075  1.0
  O  O32  1  0.088  0.250  0.816  1.0
  O  O33  1  0.412  0.250  0.316  1.0
  O  O34  1  0.912  0.750  0.184  1.0
  O  O35  1  0.588  0.750  0.684  1.0
[/CIF]
.