The compound described by LiSi6Bi9O26 crystallizes in the trigonal P3 space group. Li(1) is bonded in a 6-coordinate geometry to three equivalent O(3) and three equivalent O(4) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Bi(3)O6 pentagonal pyramid, corners with two equivalent Bi(1)O6 pentagonal pyramids, and  an edgeedge with one Bi(3)O6 pentagonal pyramid. In the second Si site, Si(2) is bonded to one O(4), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Bi(1)O6 pentagonal pyramid, corners with two equivalent Bi(3)O6 pentagonal pyramids, and  an edgeedge with one Bi(1)O6 pentagonal pyramid. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(6), one O(7), one O(8), and one O(9) atom to form distorted BiO6 pentagonal pyramids that share corners with two equivalent Bi(1)O6 pentagonal pyramids, corners with four equivalent Bi(3)O6 pentagonal pyramids,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to three equivalent O(2), three equivalent O(3), and three equivalent O(4) atoms. In the third Bi site, Bi(3) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form distorted BiO6 pentagonal pyramids that share corners with two equivalent Bi(3)O6 pentagonal pyramids, corners with four equivalent Bi(1)O6 pentagonal pyramids,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to three equivalent O(10) and three equivalent O(9) atoms. In the fifth Bi site, Bi(5) is bonded in a 9-coordinate geometry to three equivalent O(10), three equivalent O(8), and three equivalent O(9) atoms. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a distorted single-bond geometry to one Si(2), one Bi(1), one Bi(4), and one Bi(5) atom. In the second O site, O(10) is bonded in a distorted single-bond geometry to one Si(1), one Bi(4), and one Bi(5) atom. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Si(1), one Bi(1), and one Bi(3) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Si(1), one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(3) is bonded in a distorted single-bond geometry to one Li(1), one Si(1), one Bi(2), and one Bi(3) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Bi(2) atom. In the seventh O site, O(5) is bonded in a trigonal planar geometry to three equivalent Bi(3) atoms. In the eighth O site, O(6) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms. In the ninth O site, O(7) is bonded in a 3-coordinate geometry to one Si(2), one Bi(1), and one Bi(3) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one Si(2), one Bi(1), one Bi(3), and one Bi(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiSi6Bi9O26
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.708
_cell_length_b   9.708
_cell_length_c   7.082
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   578.073
_cell_formula_units_Z   1
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
  Li  Li0  1  0.333  0.667  0.519  1.0
  Si  Si1  1  0.030  0.623  0.252  1.0
  Si  Si2  1  0.592  0.970  0.252  1.0
  Si  Si3  1  0.377  0.408  0.252  1.0
  Si  Si4  1  0.624  0.602  0.748  1.0
  Si  Si5  1  0.398  0.022  0.748  1.0
  Si  Si6  1  0.978  0.376  0.748  1.0
  Bi  Bi7  1  0.988  0.760  0.733  1.0
  Bi  Bi8  1  0.333  0.667  0.977  1.0
  Bi  Bi9  1  0.240  0.228  0.733  1.0
  Bi  Bi10  1  0.225  0.981  0.237  1.0
  Bi  Bi11  1  0.772  0.012  0.733  1.0
  Bi  Bi12  1  0.757  0.775  0.237  1.0
  Bi  Bi13  1  0.667  0.333  0.002  1.0
  Bi  Bi14  1  0.667  0.333  0.489  1.0
  Bi  Bi15  1  0.019  0.243  0.237  1.0
  O  O16  1  0.066  0.754  0.422  1.0
  O  O17  1  0.098  0.744  0.067  1.0
  O  O18  1  0.128  0.527  0.265  1.0
  O  O19  1  0.324  0.831  0.742  1.0
  O  O20  1  0.169  0.493  0.742  1.0
  O  O21  1  0.399  0.872  0.265  1.0
  O  O22  1  0.000  0.000  0.188  1.0
  O  O23  1  0.000  0.000  0.692  1.0
  O  O24  1  0.256  0.354  0.067  1.0
  O  O25  1  0.246  0.312  0.422  1.0
  O  O26  1  0.507  0.676  0.742  1.0
  O  O27  1  0.473  0.601  0.265  1.0
  O  O28  1  0.646  0.902  0.067  1.0
  O  O29  1  0.688  0.934  0.422  1.0
  O  O30  1  0.329  0.081  0.927  1.0
  O  O31  1  0.353  0.100  0.566  1.0
  O  O32  1  0.528  0.405  0.760  1.0
  O  O33  1  0.503  0.339  0.244  1.0
  O  O34  1  0.752  0.671  0.927  1.0
  O  O35  1  0.747  0.647  0.566  1.0
  O  O36  1  0.595  0.123  0.760  1.0
  O  O37  1  0.836  0.497  0.244  1.0
  O  O38  1  0.661  0.164  0.244  1.0
  O  O39  1  0.877  0.472  0.760  1.0
  O  O40  1  0.900  0.253  0.566  1.0
  O  O41  1  0.919  0.248  0.927  1.0
[/CIF]
.
The compound described by LiSi6Bi9O26 crystallizes in the trigonal P3 space group. Li(1) is bonded in a 6-coordinate geometry to three equivalent O(3) and three equivalent O(4) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Bi(3)O6 pentagonal pyramid, corners with two equivalent Bi(1)O6 pentagonal pyramids, and  an edgeedge with one Bi(3)O6 pentagonal pyramid. In the second Si site, Si(2) is bonded to one O(4), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Bi(1)O6 pentagonal pyramid, corners with two equivalent Bi(3)O6 pentagonal pyramids, and  an edgeedge with one Bi(1)O6 pentagonal pyramid. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(6), one O(7), one O(8), and one O(9) atom to form distorted BiO6 pentagonal pyramids that share corners with two equivalent Bi(1)O6 pentagonal pyramids, corners with four equivalent Bi(3)O6 pentagonal pyramids,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to three equivalent O(2), three equivalent O(3), and three equivalent O(4) atoms. In the third Bi site, Bi(3) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form distorted BiO6 pentagonal pyramids that share corners with two equivalent Bi(3)O6 pentagonal pyramids, corners with four equivalent Bi(1)O6 pentagonal pyramids,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to three equivalent O(10) and three equivalent O(9) atoms. In the fifth Bi site, Bi(5) is bonded in a 9-coordinate geometry to three equivalent O(10), three equivalent O(8), and three equivalent O(9) atoms. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a distorted single-bond geometry to one Si(2), one Bi(1), one Bi(4), and one Bi(5) atom. In the second O site, O(10) is bonded in a distorted single-bond geometry to one Si(1), one Bi(4), and one Bi(5) atom. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Si(1), one Bi(1), and one Bi(3) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Si(1), one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(3) is bonded in a distorted single-bond geometry to one Li(1), one Si(1), one Bi(2), and one Bi(3) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Bi(2) atom. In the seventh O site, O(5) is bonded in a trigonal planar geometry to three equivalent Bi(3) atoms. In the eighth O site, O(6) is bonded in a trigonal planar geometry to three equivalent Bi(1) atoms. In the ninth O site, O(7) is bonded in a 3-coordinate geometry to one Si(2), one Bi(1), and one Bi(3) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one Si(2), one Bi(1), one Bi(3), and one Bi(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiSi6Bi9O26
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.708
_cell_length_b   9.708
_cell_length_c   7.082
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   578.073
_cell_formula_units_Z   1
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
  Li  Li0  1  0.333  0.667  0.519  1.0
  Si  Si1  1  0.030  0.623  0.252  1.0
  Si  Si2  1  0.592  0.970  0.252  1.0
  Si  Si3  1  0.377  0.408  0.252  1.0
  Si  Si4  1  0.624  0.602  0.748  1.0
  Si  Si5  1  0.398  0.022  0.748  1.0
  Si  Si6  1  0.978  0.376  0.748  1.0
  Bi  Bi7  1  0.988  0.760  0.733  1.0
  Bi  Bi8  1  0.333  0.667  0.977  1.0
  Bi  Bi9  1  0.240  0.228  0.733  1.0
  Bi  Bi10  1  0.225  0.981  0.237  1.0
  Bi  Bi11  1  0.772  0.012  0.733  1.0
  Bi  Bi12  1  0.757  0.775  0.237  1.0
  Bi  Bi13  1  0.667  0.333  0.002  1.0
  Bi  Bi14  1  0.667  0.333  0.489  1.0
  Bi  Bi15  1  0.019  0.243  0.237  1.0
  O  O16  1  0.066  0.754  0.422  1.0
  O  O17  1  0.098  0.744  0.067  1.0
  O  O18  1  0.128  0.527  0.265  1.0
  O  O19  1  0.324  0.831  0.742  1.0
  O  O20  1  0.169  0.493  0.742  1.0
  O  O21  1  0.399  0.872  0.265  1.0
  O  O22  1  0.000  0.000  0.188  1.0
  O  O23  1  0.000  0.000  0.692  1.0
  O  O24  1  0.256  0.354  0.067  1.0
  O  O25  1  0.246  0.312  0.422  1.0
  O  O26  1  0.507  0.676  0.742  1.0
  O  O27  1  0.473  0.601  0.265  1.0
  O  O28  1  0.646  0.902  0.067  1.0
  O  O29  1  0.688  0.934  0.422  1.0
  O  O30  1  0.329  0.081  0.927  1.0
  O  O31  1  0.353  0.100  0.566  1.0
  O  O32  1  0.528  0.405  0.760  1.0
  O  O33  1  0.503  0.339  0.244  1.0
  O  O34  1  0.752  0.671  0.927  1.0
  O  O35  1  0.747  0.647  0.566  1.0
  O  O36  1  0.595  0.123  0.760  1.0
  O  O37  1  0.836  0.497  0.244  1.0
  O  O38  1  0.661  0.164  0.244  1.0
  O  O39  1  0.877  0.472  0.760  1.0
  O  O40  1  0.900  0.253  0.566  1.0
  O  O41  1  0.919  0.248  0.927  1.0
[/CIF]
.