The material structure described by K(SiO2)2 crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. Si(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to two equivalent Si(1) atoms. In the second O site, O(1) is bonded in a linear geometry to three equivalent K(1) and two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_K(SiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.516
_cell_length_b   5.516
_cell_length_c   8.535
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   224.891
_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
  K  K0  1  0.000  0.000  0.250  1.0
  K  K1  1  0.000  0.000  0.750  1.0
  Si  Si2  1  0.333  0.667  0.055  1.0
  Si  Si3  1  0.667  0.333  0.555  1.0
  Si  Si4  1  0.333  0.667  0.445  1.0
  Si  Si5  1  0.667  0.333  0.945  1.0
  O  O6  1  0.333  0.667  0.250  1.0
  O  O7  1  0.667  0.333  0.750  1.0
  O  O8  1  0.500  0.500  0.500  1.0
  O  O9  1  0.500  0.000  0.500  1.0
  O  O10  1  0.500  0.500  0.000  1.0
  O  O11  1  0.000  0.500  0.500  1.0
  O  O12  1  0.500  0.000  0.000  1.0
  O  O13  1  0.000  0.500  0.000  1.0
[/CIF]
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The material structure described by K(SiO2)2 crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. Si(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to two equivalent Si(1) atoms. In the second O site, O(1) is bonded in a linear geometry to three equivalent K(1) and two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_K(SiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.516
_cell_length_b   5.516
_cell_length_c   8.535
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   224.891
_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
  K  K0  1  0.000  0.000  0.250  1.0
  K  K1  1  0.000  0.000  0.750  1.0
  Si  Si2  1  0.333  0.667  0.055  1.0
  Si  Si3  1  0.667  0.333  0.555  1.0
  Si  Si4  1  0.333  0.667  0.445  1.0
  Si  Si5  1  0.667  0.333  0.945  1.0
  O  O6  1  0.333  0.667  0.250  1.0
  O  O7  1  0.667  0.333  0.750  1.0
  O  O8  1  0.500  0.500  0.500  1.0
  O  O9  1  0.500  0.000  0.500  1.0
  O  O10  1  0.500  0.500  0.000  1.0
  O  O11  1  0.000  0.500  0.500  1.0
  O  O12  1  0.500  0.000  0.000  1.0
  O  O13  1  0.000  0.500  0.000  1.0
[/CIF]
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