The structure described by Si2O3 is beta Sn structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four dtxsid301220313 molecules. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. In the second Si site, Si(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(7) atom. In the third Si site, Si(3) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(8) atom. In the fourth Si site, Si(4) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(8) atom. In the fifth Si site, Si(5) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(3) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Si2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.014
_cell_length_b   11.014
_cell_length_c   14.385
_cell_angle_alpha   53.638
_cell_angle_beta   53.638
_cell_angle_gamma   48.625
_symmetry_Int_Tables_number   1
_cell_volume   994.523
_cell_formula_units_Z   10
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
  Si  Si0  1  0.280  0.732  0.634  1.0
  Si  Si1  1  0.268  0.720  0.866  1.0
  Si  Si2  1  0.720  0.268  0.366  1.0
  Si  Si3  1  0.732  0.280  0.134  1.0
  Si  Si4  1  0.902  0.766  0.781  1.0
  Si  Si5  1  0.234  0.098  0.719  1.0
  Si  Si6  1  0.098  0.234  0.219  1.0
  Si  Si7  1  0.766  0.902  0.281  1.0
  Si  Si8  1  0.631  0.165  0.728  1.0
  Si  Si9  1  0.835  0.369  0.772  1.0
  Si  Si10  1  0.369  0.835  0.272  1.0
  Si  Si11  1  0.165  0.631  0.228  1.0
  Si  Si12  1  0.626  0.154  0.956  1.0
  Si  Si13  1  0.846  0.374  0.544  1.0
  Si  Si14  1  0.374  0.846  0.044  1.0
  Si  Si15  1  0.154  0.626  0.456  1.0
  Si  Si16  1  0.894  0.750  0.013  1.0
  Si  Si17  1  0.250  0.106  0.487  1.0
  Si  Si18  1  0.106  0.250  0.987  1.0
  Si  Si19  1  0.750  0.894  0.513  1.0
  O  O20  1  0.088  0.758  0.681  1.0
  O  O21  1  0.242  0.912  0.819  1.0
  O  O22  1  0.912  0.242  0.319  1.0
  O  O23  1  0.758  0.088  0.181  1.0
  O  O24  1  0.750  0.961  0.737  1.0
  O  O25  1  0.039  0.250  0.763  1.0
  O  O26  1  0.250  0.039  0.263  1.0
  O  O27  1  0.961  0.750  0.237  1.0
  O  O28  1  0.746  0.263  0.615  1.0
  O  O29  1  0.737  0.254  0.885  1.0
  O  O30  1  0.254  0.737  0.385  1.0
  O  O31  1  0.263  0.746  0.115  1.0
  O  O32  1  0.752  0.948  0.015  1.0
  O  O33  1  0.052  0.248  0.485  1.0
  O  O34  1  0.248  0.052  0.985  1.0
  O  O35  1  0.948  0.752  0.515  1.0
  O  O36  1  0.280  0.915  0.530  1.0
  O  O37  1  0.085  0.720  0.970  1.0
  O  O38  1  0.720  0.085  0.470  1.0
  O  O39  1  0.915  0.280  0.030  1.0
  O  O40  1  0.318  0.682  0.750  1.0
  O  O41  1  0.682  0.318  0.250  1.0
  O  O42  1  0.887  0.717  0.919  1.0
  O  O43  1  0.283  0.113  0.581  1.0
  O  O44  1  0.113  0.283  0.081  1.0
  O  O45  1  0.717  0.887  0.419  1.0
  O  O46  1  0.572  0.179  0.858  1.0
  O  O47  1  0.821  0.428  0.642  1.0
  O  O48  1  0.428  0.821  0.142  1.0
  O  O49  1  0.179  0.572  0.358  1.0
[/CIF]
.
The structure described by Si2O3 is beta Sn structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four dtxsid301220313 molecules. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. In the second Si site, Si(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(7) atom. In the third Si site, Si(3) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(8) atom. In the fourth Si site, Si(4) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(8) atom. In the fifth Si site, Si(5) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(3) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Si2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.014
_cell_length_b   11.014
_cell_length_c   14.385
_cell_angle_alpha   53.638
_cell_angle_beta   53.638
_cell_angle_gamma   48.625
_symmetry_Int_Tables_number   1
_cell_volume   994.523
_cell_formula_units_Z   10
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
  Si  Si0  1  0.280  0.732  0.634  1.0
  Si  Si1  1  0.268  0.720  0.866  1.0
  Si  Si2  1  0.720  0.268  0.366  1.0
  Si  Si3  1  0.732  0.280  0.134  1.0
  Si  Si4  1  0.902  0.766  0.781  1.0
  Si  Si5  1  0.234  0.098  0.719  1.0
  Si  Si6  1  0.098  0.234  0.219  1.0
  Si  Si7  1  0.766  0.902  0.281  1.0
  Si  Si8  1  0.631  0.165  0.728  1.0
  Si  Si9  1  0.835  0.369  0.772  1.0
  Si  Si10  1  0.369  0.835  0.272  1.0
  Si  Si11  1  0.165  0.631  0.228  1.0
  Si  Si12  1  0.626  0.154  0.956  1.0
  Si  Si13  1  0.846  0.374  0.544  1.0
  Si  Si14  1  0.374  0.846  0.044  1.0
  Si  Si15  1  0.154  0.626  0.456  1.0
  Si  Si16  1  0.894  0.750  0.013  1.0
  Si  Si17  1  0.250  0.106  0.487  1.0
  Si  Si18  1  0.106  0.250  0.987  1.0
  Si  Si19  1  0.750  0.894  0.513  1.0
  O  O20  1  0.088  0.758  0.681  1.0
  O  O21  1  0.242  0.912  0.819  1.0
  O  O22  1  0.912  0.242  0.319  1.0
  O  O23  1  0.758  0.088  0.181  1.0
  O  O24  1  0.750  0.961  0.737  1.0
  O  O25  1  0.039  0.250  0.763  1.0
  O  O26  1  0.250  0.039  0.263  1.0
  O  O27  1  0.961  0.750  0.237  1.0
  O  O28  1  0.746  0.263  0.615  1.0
  O  O29  1  0.737  0.254  0.885  1.0
  O  O30  1  0.254  0.737  0.385  1.0
  O  O31  1  0.263  0.746  0.115  1.0
  O  O32  1  0.752  0.948  0.015  1.0
  O  O33  1  0.052  0.248  0.485  1.0
  O  O34  1  0.248  0.052  0.985  1.0
  O  O35  1  0.948  0.752  0.515  1.0
  O  O36  1  0.280  0.915  0.530  1.0
  O  O37  1  0.085  0.720  0.970  1.0
  O  O38  1  0.720  0.085  0.470  1.0
  O  O39  1  0.915  0.280  0.030  1.0
  O  O40  1  0.318  0.682  0.750  1.0
  O  O41  1  0.682  0.318  0.250  1.0
  O  O42  1  0.887  0.717  0.919  1.0
  O  O43  1  0.283  0.113  0.581  1.0
  O  O44  1  0.113  0.283  0.081  1.0
  O  O45  1  0.717  0.887  0.419  1.0
  O  O46  1  0.572  0.179  0.858  1.0
  O  O47  1  0.821  0.428  0.642  1.0
  O  O48  1  0.428  0.821  0.142  1.0
  O  O49  1  0.179  0.572  0.358  1.0
[/CIF]
.