The material structure described by RbSi crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to three equivalent Rb(2), four equivalent Rb(1), and three equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_RbSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.975
_cell_length_b   10.975
_cell_length_c   11.832
_cell_angle_alpha   117.631
_cell_angle_beta   117.631
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1075.792
_cell_formula_units_Z   16
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  0.250  0.393  0.000  1.0
  Rb  Rb1  1  0.250  0.893  0.000  1.0
  Rb  Rb2  1  0.107  0.750  0.500  1.0
  Rb  Rb3  1  0.893  0.250  0.500  1.0
  Rb  Rb4  1  0.750  0.607  0.000  1.0
  Rb  Rb5  1  0.750  0.107  0.000  1.0
  Rb  Rb6  1  0.607  0.750  0.500  1.0
  Rb  Rb7  1  0.393  0.250  0.500  1.0
  Rb  Rb8  1  0.754  0.246  0.750  1.0
  Rb  Rb9  1  0.496  0.746  0.750  1.0
  Rb  Rb10  1  0.004  0.996  0.250  1.0
  Rb  Rb11  1  0.746  0.496  0.250  1.0
  Rb  Rb12  1  0.246  0.754  0.250  1.0
  Rb  Rb13  1  0.504  0.254  0.250  1.0
  Rb  Rb14  1  0.996  0.004  0.750  1.0
  Rb  Rb15  1  0.254  0.504  0.750  1.0
  Si  Si16  1  0.266  0.481  0.345  1.0
  Si  Si17  1  0.579  0.981  0.345  1.0
  Si  Si18  1  0.364  0.079  0.845  1.0
  Si  Si19  1  0.981  0.579  0.845  1.0
  Si  Si20  1  0.734  0.519  0.655  1.0
  Si  Si21  1  0.421  0.019  0.655  1.0
  Si  Si22  1  0.636  0.921  0.155  1.0
  Si  Si23  1  0.019  0.421  0.155  1.0
  Si  Si24  1  0.766  0.864  0.345  1.0
  Si  Si25  1  0.079  0.364  0.345  1.0
  Si  Si26  1  0.864  0.766  0.845  1.0
  Si  Si27  1  0.481  0.266  0.845  1.0
  Si  Si28  1  0.234  0.136  0.655  1.0
  Si  Si29  1  0.921  0.636  0.655  1.0
  Si  Si30  1  0.136  0.234  0.155  1.0
  Si  Si31  1  0.519  0.734  0.155  1.0
[/CIF]
.
The material structure described by RbSi crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to three equivalent Rb(2), four equivalent Rb(1), and three equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_RbSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.975
_cell_length_b   10.975
_cell_length_c   11.832
_cell_angle_alpha   117.631
_cell_angle_beta   117.631
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1075.792
_cell_formula_units_Z   16
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  0.250  0.393  0.000  1.0
  Rb  Rb1  1  0.250  0.893  0.000  1.0
  Rb  Rb2  1  0.107  0.750  0.500  1.0
  Rb  Rb3  1  0.893  0.250  0.500  1.0
  Rb  Rb4  1  0.750  0.607  0.000  1.0
  Rb  Rb5  1  0.750  0.107  0.000  1.0
  Rb  Rb6  1  0.607  0.750  0.500  1.0
  Rb  Rb7  1  0.393  0.250  0.500  1.0
  Rb  Rb8  1  0.754  0.246  0.750  1.0
  Rb  Rb9  1  0.496  0.746  0.750  1.0
  Rb  Rb10  1  0.004  0.996  0.250  1.0
  Rb  Rb11  1  0.746  0.496  0.250  1.0
  Rb  Rb12  1  0.246  0.754  0.250  1.0
  Rb  Rb13  1  0.504  0.254  0.250  1.0
  Rb  Rb14  1  0.996  0.004  0.750  1.0
  Rb  Rb15  1  0.254  0.504  0.750  1.0
  Si  Si16  1  0.266  0.481  0.345  1.0
  Si  Si17  1  0.579  0.981  0.345  1.0
  Si  Si18  1  0.364  0.079  0.845  1.0
  Si  Si19  1  0.981  0.579  0.845  1.0
  Si  Si20  1  0.734  0.519  0.655  1.0
  Si  Si21  1  0.421  0.019  0.655  1.0
  Si  Si22  1  0.636  0.921  0.155  1.0
  Si  Si23  1  0.019  0.421  0.155  1.0
  Si  Si24  1  0.766  0.864  0.345  1.0
  Si  Si25  1  0.079  0.364  0.345  1.0
  Si  Si26  1  0.864  0.766  0.845  1.0
  Si  Si27  1  0.481  0.266  0.845  1.0
  Si  Si28  1  0.234  0.136  0.655  1.0
  Si  Si29  1  0.921  0.636  0.655  1.0
  Si  Si30  1  0.136  0.234  0.155  1.0
  Si  Si31  1  0.519  0.734  0.155  1.0
[/CIF]
.