The structure described by SiBi3O7 crystallizes in the hexagonal P6_3 space group. Si(1) is bonded in a tetrahedral geometry to one O(3) and three equivalent O(2) atoms. Bi(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(2), and three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to three equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Si(1) and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Si(1) and three equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_SiBi3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.243
_cell_length_b   8.243
_cell_length_c   5.352
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   314.936
_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
  Si  Si0  1  0.667  0.333  0.324  1.0
  Si  Si1  1  0.333  0.667  0.824  1.0
  Bi  Bi2  1  0.343  0.246  0.794  1.0
  Bi  Bi3  1  0.754  0.096  0.794  1.0
  Bi  Bi4  1  0.096  0.343  0.294  1.0
  Bi  Bi5  1  0.904  0.657  0.794  1.0
  Bi  Bi6  1  0.246  0.904  0.294  1.0
  Bi  Bi7  1  0.657  0.754  0.294  1.0
  O  O8  1  0.244  0.162  0.176  1.0
  O  O9  1  0.531  0.122  0.450  1.0
  O  O10  1  0.838  0.082  0.176  1.0
  O  O11  1  0.667  0.333  0.015  1.0
  O  O12  1  0.591  0.469  0.450  1.0
  O  O13  1  0.878  0.409  0.450  1.0
  O  O14  1  0.082  0.244  0.676  1.0
  O  O15  1  0.918  0.756  0.176  1.0
  O  O16  1  0.122  0.591  0.950  1.0
  O  O17  1  0.409  0.531  0.950  1.0
  O  O18  1  0.333  0.667  0.515  1.0
  O  O19  1  0.162  0.918  0.676  1.0
  O  O20  1  0.469  0.878  0.950  1.0
  O  O21  1  0.756  0.838  0.676  1.0
[/CIF]
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The structure described by SiBi3O7 crystallizes in the hexagonal P6_3 space group. Si(1) is bonded in a tetrahedral geometry to one O(3) and three equivalent O(2) atoms. Bi(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(2), and three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to three equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Si(1) and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Si(1) and three equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_SiBi3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.243
_cell_length_b   8.243
_cell_length_c   5.352
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   314.936
_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
  Si  Si0  1  0.667  0.333  0.324  1.0
  Si  Si1  1  0.333  0.667  0.824  1.0
  Bi  Bi2  1  0.343  0.246  0.794  1.0
  Bi  Bi3  1  0.754  0.096  0.794  1.0
  Bi  Bi4  1  0.096  0.343  0.294  1.0
  Bi  Bi5  1  0.904  0.657  0.794  1.0
  Bi  Bi6  1  0.246  0.904  0.294  1.0
  Bi  Bi7  1  0.657  0.754  0.294  1.0
  O  O8  1  0.244  0.162  0.176  1.0
  O  O9  1  0.531  0.122  0.450  1.0
  O  O10  1  0.838  0.082  0.176  1.0
  O  O11  1  0.667  0.333  0.015  1.0
  O  O12  1  0.591  0.469  0.450  1.0
  O  O13  1  0.878  0.409  0.450  1.0
  O  O14  1  0.082  0.244  0.676  1.0
  O  O15  1  0.918  0.756  0.176  1.0
  O  O16  1  0.122  0.591  0.950  1.0
  O  O17  1  0.409  0.531  0.950  1.0
  O  O18  1  0.333  0.667  0.515  1.0
  O  O19  1  0.162  0.918  0.676  1.0
  O  O20  1  0.469  0.878  0.950  1.0
  O  O21  1  0.756  0.838  0.676  1.0
[/CIF]
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