The structure described by Rb4SiO4 crystallizes in the triclinic P-1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(4) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(4), two equivalent Rb(1), two equivalent Rb(3), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), one Rb(4), two equivalent Rb(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Si(1) atom. is represented by the CIF card [CIF]
data_Rb4SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.729
_cell_length_b   6.823
_cell_length_c   9.283
_cell_angle_alpha   82.668
_cell_angle_beta   73.919
_cell_angle_gamma   61.774
_symmetry_Int_Tables_number   1
_cell_volume   360.852
_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
  Rb  Rb0  1  0.253  0.717  0.957  1.0
  Rb  Rb1  1  0.501  0.730  0.556  1.0
  Rb  Rb2  1  0.646  0.793  0.136  1.0
  Rb  Rb3  1  0.066  0.760  0.364  1.0
  Rb  Rb4  1  0.934  0.240  0.636  1.0
  Rb  Rb5  1  0.354  0.207  0.864  1.0
  Rb  Rb6  1  0.499  0.270  0.444  1.0
  Rb  Rb7  1  0.747  0.283  0.043  1.0
  Si  Si8  1  0.864  0.769  0.748  1.0
  Si  Si9  1  0.136  0.231  0.252  1.0
  O  O10  1  0.853  0.935  0.869  1.0
  O  O11  1  0.730  0.935  0.621  1.0
  O  O12  1  0.718  0.631  0.835  1.0
  O  O13  1  0.863  0.406  0.331  1.0
  O  O14  1  0.137  0.594  0.669  1.0
  O  O15  1  0.282  0.369  0.165  1.0
  O  O16  1  0.270  0.065  0.379  1.0
  O  O17  1  0.147  0.065  0.131  1.0
[/CIF]
.
The structure described by Rb4SiO4 crystallizes in the triclinic P-1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(4) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(4), two equivalent Rb(1), two equivalent Rb(3), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), one Rb(4), two equivalent Rb(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Si(1) atom. is represented by the CIF card [CIF]
data_Rb4SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.729
_cell_length_b   6.823
_cell_length_c   9.283
_cell_angle_alpha   82.668
_cell_angle_beta   73.919
_cell_angle_gamma   61.774
_symmetry_Int_Tables_number   1
_cell_volume   360.852
_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
  Rb  Rb0  1  0.253  0.717  0.957  1.0
  Rb  Rb1  1  0.501  0.730  0.556  1.0
  Rb  Rb2  1  0.646  0.793  0.136  1.0
  Rb  Rb3  1  0.066  0.760  0.364  1.0
  Rb  Rb4  1  0.934  0.240  0.636  1.0
  Rb  Rb5  1  0.354  0.207  0.864  1.0
  Rb  Rb6  1  0.499  0.270  0.444  1.0
  Rb  Rb7  1  0.747  0.283  0.043  1.0
  Si  Si8  1  0.864  0.769  0.748  1.0
  Si  Si9  1  0.136  0.231  0.252  1.0
  O  O10  1  0.853  0.935  0.869  1.0
  O  O11  1  0.730  0.935  0.621  1.0
  O  O12  1  0.718  0.631  0.835  1.0
  O  O13  1  0.863  0.406  0.331  1.0
  O  O14  1  0.137  0.594  0.669  1.0
  O  O15  1  0.282  0.369  0.165  1.0
  O  O16  1  0.270  0.065  0.379  1.0
  O  O17  1  0.147  0.065  0.131  1.0
[/CIF]
.