The material structure described by SiO2 is quartz (beta)-like structured and crystallizes in the tetragonal I4_1/amd space group. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.573
_cell_length_b   8.573
_cell_length_c   8.573
_cell_angle_alpha   107.705
_cell_angle_beta   110.361
_cell_angle_gamma   110.361
_symmetry_Int_Tables_number   1
_cell_volume   484.775
_cell_formula_units_Z   8
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
  O  O0  1  0.566  0.840  0.406  1.0
  O  O1  1  0.434  0.274  0.340  1.0
  O  O2  1  0.066  0.906  0.340  1.0
  O  O3  1  0.434  0.160  0.594  1.0
  O  O4  1  0.066  0.160  0.226  1.0
  O  O5  1  0.934  0.840  0.774  1.0
  O  O6  1  0.566  0.726  0.660  1.0
  O  O7  1  0.934  0.094  0.660  1.0
  O  O8  1  0.797  0.000  0.297  1.0
  O  O9  1  0.703  0.203  0.500  1.0
  O  O10  1  0.797  0.797  0.000  1.0
  O  O11  1  0.703  0.500  0.703  1.0
  O  O12  1  0.203  0.000  0.703  1.0
  O  O13  1  0.297  0.797  0.500  1.0
  O  O14  1  0.203  0.203  0.000  1.0
  O  O15  1  0.297  0.500  0.297  1.0
  Si  Si16  1  0.750  0.034  0.466  1.0
  Si  Si17  1  0.568  0.284  0.534  1.0
  Si  Si18  1  0.932  0.966  0.216  1.0
  Si  Si19  1  0.750  0.716  0.784  1.0
  Si  Si20  1  0.250  0.966  0.534  1.0
  Si  Si21  1  0.432  0.716  0.466  1.0
  Si  Si22  1  0.068  0.034  0.784  1.0
  Si  Si23  1  0.250  0.284  0.216  1.0
[/CIF]
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The material structure described by SiO2 is quartz (beta)-like structured and crystallizes in the tetragonal I4_1/amd space group. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.573
_cell_length_b   8.573
_cell_length_c   8.573
_cell_angle_alpha   107.705
_cell_angle_beta   110.361
_cell_angle_gamma   110.361
_symmetry_Int_Tables_number   1
_cell_volume   484.775
_cell_formula_units_Z   8
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
  O  O0  1  0.566  0.840  0.406  1.0
  O  O1  1  0.434  0.274  0.340  1.0
  O  O2  1  0.066  0.906  0.340  1.0
  O  O3  1  0.434  0.160  0.594  1.0
  O  O4  1  0.066  0.160  0.226  1.0
  O  O5  1  0.934  0.840  0.774  1.0
  O  O6  1  0.566  0.726  0.660  1.0
  O  O7  1  0.934  0.094  0.660  1.0
  O  O8  1  0.797  0.000  0.297  1.0
  O  O9  1  0.703  0.203  0.500  1.0
  O  O10  1  0.797  0.797  0.000  1.0
  O  O11  1  0.703  0.500  0.703  1.0
  O  O12  1  0.203  0.000  0.703  1.0
  O  O13  1  0.297  0.797  0.500  1.0
  O  O14  1  0.203  0.203  0.000  1.0
  O  O15  1  0.297  0.500  0.297  1.0
  Si  Si16  1  0.750  0.034  0.466  1.0
  Si  Si17  1  0.568  0.284  0.534  1.0
  Si  Si18  1  0.932  0.966  0.216  1.0
  Si  Si19  1  0.750  0.716  0.784  1.0
  Si  Si20  1  0.250  0.966  0.534  1.0
  Si  Si21  1  0.432  0.716  0.466  1.0
  Si  Si22  1  0.068  0.034  0.784  1.0
  Si  Si23  1  0.250  0.284  0.216  1.0
[/CIF]
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