The material structure described by Li2Bi3P9O28 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(4) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(13), two equivalent O(7), and two equivalent O(9) atoms to form BiO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the second Bi site, Bi(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted BiO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), one O(11), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(5)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-64°. In the second P site, P(2) is bonded to one O(12), one O(2), one O(5), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 28-55°. In the third P site, P(3) is bonded to one O(11), one O(14), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  a cornercorner with one P(5)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-59°. In the fourth P site, P(4) is bonded to one O(12), one O(13), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  a cornercorner with one P(5)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the fifth P site, P(5) is bonded to two equivalent O(10), two equivalent O(14), and two equivalent O(8) atoms to form corner-sharing PO6 octahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Bi(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Bi(2), and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Bi(2), and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Bi(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Bi(2) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Bi(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one P(4) and one P(5) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Bi(1) and one P(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one P(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Bi(1) and one P(4) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one P(3) and one P(5) atom. is represented by the CIF file [CIF]
data_Li2Bi3P9O28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.130
_cell_length_b   9.843
_cell_length_c   9.894
_cell_angle_alpha   113.907
_cell_angle_beta   97.307
_cell_angle_gamma   107.399
_symmetry_Int_Tables_number   1
_cell_volume   580.662
_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  0.673  0.223  0.950  1.0
  Li  Li1  1  0.327  0.777  0.050  1.0
  Bi  Bi2  1  0.000  0.500  0.500  1.0
  Bi  Bi3  1  0.248  0.265  0.038  1.0
  Bi  Bi4  1  0.752  0.735  0.962  1.0
  P  P5  1  0.189  0.035  0.263  1.0
  P  P6  1  0.725  0.571  0.229  1.0
  P  P7  1  0.787  0.065  0.293  1.0
  P  P8  1  0.376  0.637  0.333  1.0
  P  P9  1  0.500  0.000  0.500  1.0
  P  P10  1  0.213  0.935  0.707  1.0
  P  P11  1  0.624  0.363  0.667  1.0
  P  P12  1  0.811  0.965  0.737  1.0
  P  P13  1  0.275  0.429  0.771  1.0
  O  O14  1  0.129  0.875  0.116  1.0
  O  O15  1  0.601  0.392  0.107  1.0
  O  O16  1  0.244  0.520  0.166  1.0
  O  O17  1  0.640  0.928  0.137  1.0
  O  O18  1  0.753  0.685  0.160  1.0
  O  O19  1  0.263  0.182  0.240  1.0
  O  O20  1  0.854  0.228  0.297  1.0
  O  O21  1  0.411  0.810  0.347  1.0
  O  O22  1  0.922  0.594  0.329  1.0
  O  O23  1  0.350  0.052  0.397  1.0
  O  O24  1  0.991  0.028  0.329  1.0
  O  O25  1  0.594  0.622  0.350  1.0
  O  O26  1  0.310  0.610  0.461  1.0
  O  O27  1  0.701  0.062  0.430  1.0
  O  O28  1  0.690  0.390  0.539  1.0
  O  O29  1  0.299  0.938  0.570  1.0
  O  O30  1  0.009  0.972  0.671  1.0
  O  O31  1  0.406  0.378  0.650  1.0
  O  O32  1  0.078  0.406  0.671  1.0
  O  O33  1  0.650  0.948  0.603  1.0
  O  O34  1  0.146  0.772  0.703  1.0
  O  O35  1  0.589  0.190  0.653  1.0
  O  O36  1  0.247  0.315  0.840  1.0
  O  O37  1  0.737  0.818  0.760  1.0
  O  O38  1  0.756  0.480  0.834  1.0
  O  O39  1  0.360  0.072  0.863  1.0
  O  O40  1  0.871  0.125  0.884  1.0
  O  O41  1  0.399  0.608  0.893  1.0
[/CIF]
.
The material structure described by Li2Bi3P9O28 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(4) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(13), two equivalent O(7), and two equivalent O(9) atoms to form BiO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the second Bi site, Bi(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted BiO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), one O(11), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(5)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-64°. In the second P site, P(2) is bonded to one O(12), one O(2), one O(5), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 28-55°. In the third P site, P(3) is bonded to one O(11), one O(14), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  a cornercorner with one P(5)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-59°. In the fourth P site, P(4) is bonded to one O(12), one O(13), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  a cornercorner with one P(5)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the fifth P site, P(5) is bonded to two equivalent O(10), two equivalent O(14), and two equivalent O(8) atoms to form corner-sharing PO6 octahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Bi(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Bi(2), and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Bi(2), and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Bi(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Bi(2) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Bi(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one P(4) and one P(5) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Bi(1) and one P(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one P(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Bi(1) and one P(4) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one P(3) and one P(5) atom. is represented by the CIF file [CIF]
data_Li2Bi3P9O28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.130
_cell_length_b   9.843
_cell_length_c   9.894
_cell_angle_alpha   113.907
_cell_angle_beta   97.307
_cell_angle_gamma   107.399
_symmetry_Int_Tables_number   1
_cell_volume   580.662
_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  0.673  0.223  0.950  1.0
  Li  Li1  1  0.327  0.777  0.050  1.0
  Bi  Bi2  1  0.000  0.500  0.500  1.0
  Bi  Bi3  1  0.248  0.265  0.038  1.0
  Bi  Bi4  1  0.752  0.735  0.962  1.0
  P  P5  1  0.189  0.035  0.263  1.0
  P  P6  1  0.725  0.571  0.229  1.0
  P  P7  1  0.787  0.065  0.293  1.0
  P  P8  1  0.376  0.637  0.333  1.0
  P  P9  1  0.500  0.000  0.500  1.0
  P  P10  1  0.213  0.935  0.707  1.0
  P  P11  1  0.624  0.363  0.667  1.0
  P  P12  1  0.811  0.965  0.737  1.0
  P  P13  1  0.275  0.429  0.771  1.0
  O  O14  1  0.129  0.875  0.116  1.0
  O  O15  1  0.601  0.392  0.107  1.0
  O  O16  1  0.244  0.520  0.166  1.0
  O  O17  1  0.640  0.928  0.137  1.0
  O  O18  1  0.753  0.685  0.160  1.0
  O  O19  1  0.263  0.182  0.240  1.0
  O  O20  1  0.854  0.228  0.297  1.0
  O  O21  1  0.411  0.810  0.347  1.0
  O  O22  1  0.922  0.594  0.329  1.0
  O  O23  1  0.350  0.052  0.397  1.0
  O  O24  1  0.991  0.028  0.329  1.0
  O  O25  1  0.594  0.622  0.350  1.0
  O  O26  1  0.310  0.610  0.461  1.0
  O  O27  1  0.701  0.062  0.430  1.0
  O  O28  1  0.690  0.390  0.539  1.0
  O  O29  1  0.299  0.938  0.570  1.0
  O  O30  1  0.009  0.972  0.671  1.0
  O  O31  1  0.406  0.378  0.650  1.0
  O  O32  1  0.078  0.406  0.671  1.0
  O  O33  1  0.650  0.948  0.603  1.0
  O  O34  1  0.146  0.772  0.703  1.0
  O  O35  1  0.589  0.190  0.653  1.0
  O  O36  1  0.247  0.315  0.840  1.0
  O  O37  1  0.737  0.818  0.760  1.0
  O  O38  1  0.756  0.480  0.834  1.0
  O  O39  1  0.360  0.072  0.863  1.0
  O  O40  1  0.871  0.125  0.884  1.0
  O  O41  1  0.399  0.608  0.893  1.0
[/CIF]
.