The material described by RbSi2O5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 7-coordinate geometry to one O(3), 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. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Si(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Rb(1) and two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_RbSi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.905
_cell_length_b   8.362
_cell_length_c   12.072
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.145
_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
  Rb  Rb0  1  0.965  0.750  0.970  1.0
  Rb  Rb1  1  0.535  0.750  0.470  1.0
  Rb  Rb2  1  0.035  0.250  0.030  1.0
  Rb  Rb3  1  0.465  0.250  0.530  1.0
  Si  Si4  1  0.997  0.561  0.684  1.0
  Si  Si5  1  0.503  0.939  0.184  1.0
  Si  Si6  1  0.003  0.061  0.316  1.0
  Si  Si7  1  0.497  0.439  0.816  1.0
  Si  Si8  1  0.003  0.439  0.316  1.0
  Si  Si9  1  0.497  0.061  0.816  1.0
  Si  Si10  1  0.997  0.939  0.684  1.0
  Si  Si11  1  0.503  0.561  0.184  1.0
  O  O12  1  0.270  0.456  0.715  1.0
  O  O13  1  0.230  0.044  0.215  1.0
  O  O14  1  0.730  0.956  0.285  1.0
  O  O15  1  0.770  0.544  0.785  1.0
  O  O16  1  0.730  0.544  0.285  1.0
  O  O17  1  0.770  0.956  0.785  1.0
  O  O18  1  0.270  0.044  0.715  1.0
  O  O19  1  0.230  0.456  0.215  1.0
  O  O20  1  0.850  0.501  0.571  1.0
  O  O21  1  0.650  0.999  0.071  1.0
  O  O22  1  0.150  0.001  0.429  1.0
  O  O23  1  0.350  0.499  0.929  1.0
  O  O24  1  0.150  0.499  0.429  1.0
  O  O25  1  0.350  0.001  0.929  1.0
  O  O26  1  0.850  0.999  0.571  1.0
  O  O27  1  0.650  0.501  0.071  1.0
  O  O28  1  0.094  0.750  0.684  1.0
  O  O29  1  0.406  0.750  0.184  1.0
  O  O30  1  0.906  0.250  0.316  1.0
  O  O31  1  0.594  0.250  0.816  1.0
[/CIF]
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The material described by RbSi2O5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 7-coordinate geometry to one O(3), 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. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Si(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Rb(1) and two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_RbSi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.905
_cell_length_b   8.362
_cell_length_c   12.072
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.145
_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
  Rb  Rb0  1  0.965  0.750  0.970  1.0
  Rb  Rb1  1  0.535  0.750  0.470  1.0
  Rb  Rb2  1  0.035  0.250  0.030  1.0
  Rb  Rb3  1  0.465  0.250  0.530  1.0
  Si  Si4  1  0.997  0.561  0.684  1.0
  Si  Si5  1  0.503  0.939  0.184  1.0
  Si  Si6  1  0.003  0.061  0.316  1.0
  Si  Si7  1  0.497  0.439  0.816  1.0
  Si  Si8  1  0.003  0.439  0.316  1.0
  Si  Si9  1  0.497  0.061  0.816  1.0
  Si  Si10  1  0.997  0.939  0.684  1.0
  Si  Si11  1  0.503  0.561  0.184  1.0
  O  O12  1  0.270  0.456  0.715  1.0
  O  O13  1  0.230  0.044  0.215  1.0
  O  O14  1  0.730  0.956  0.285  1.0
  O  O15  1  0.770  0.544  0.785  1.0
  O  O16  1  0.730  0.544  0.285  1.0
  O  O17  1  0.770  0.956  0.785  1.0
  O  O18  1  0.270  0.044  0.715  1.0
  O  O19  1  0.230  0.456  0.215  1.0
  O  O20  1  0.850  0.501  0.571  1.0
  O  O21  1  0.650  0.999  0.071  1.0
  O  O22  1  0.150  0.001  0.429  1.0
  O  O23  1  0.350  0.499  0.929  1.0
  O  O24  1  0.150  0.499  0.429  1.0
  O  O25  1  0.350  0.001  0.929  1.0
  O  O26  1  0.850  0.999  0.571  1.0
  O  O27  1  0.650  0.501  0.071  1.0
  O  O28  1  0.094  0.750  0.684  1.0
  O  O29  1  0.406  0.750  0.184  1.0
  O  O30  1  0.906  0.250  0.316  1.0
  O  O31  1  0.594  0.250  0.816  1.0
[/CIF]
.