The material structure described by U8Bi2O19 is alpha bismuth trifluoride-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent U sites. In the first U site, U(1) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(12), two equivalent O(13), and two equivalent O(14) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(13), two equivalent O(14), and two equivalent O(15) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(15), two equivalent O(16), and two equivalent O(2) atoms. In the fourth U site, U(4) is bonded in a body-centered cubic geometry to two equivalent O(16), two equivalent O(17), two equivalent O(2), and two equivalent O(3) atoms. In the fifth U site, U(5) is bonded in a body-centered cubic geometry to two equivalent O(17), two equivalent O(18), two equivalent O(3), and two equivalent O(4) atoms. In the sixth U site, U(6) is bonded in a body-centered cubic geometry to two equivalent O(18), two equivalent O(19), two equivalent O(4), and two equivalent O(5) atoms. In the seventh U site, U(7) is bonded in a body-centered cubic geometry to two equivalent O(19), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the eighth U site, U(8) is bonded in a body-centered cubic geometry to two equivalent O(6), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(8), and two equivalent O(9) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent U(2) and two equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the second O site, O(2) is bonded to two equivalent U(3) and two equivalent U(4) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the third O site, O(3) is bonded to two equivalent U(4) and two equivalent U(5) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to two equivalent U(5) and two equivalent U(6) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent U(6) and two equivalent U(7) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the sixth O site, O(6) is bonded to two equivalent U(7) and two equivalent U(8) atoms to form OU4 tetrahedra that share corners with two equivalent O(9)U2Bi2 tetrahedra, corners with two equivalent O(19)U4 tetrahedra, corners with four equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(5)U4 tetrahedra, corners with four equivalent O(6)U4 tetrahedra,  an edgeedge with one O(9)U2Bi2 tetrahedra,  an edgeedge with one O(19)U4 tetrahedra, and edges with four equivalent O(7)U4 tetrahedra. In the seventh O site, O(7) is bonded to two equivalent U(7) and two equivalent U(8) atoms to form OU4 tetrahedra that share corners with two equivalent O(8)U2Bi2 tetrahedra, corners with two equivalent O(5)U4 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra, corners with four equivalent O(19)U4 tetrahedra, corners with four equivalent O(7)U4 tetrahedra,  an edgeedge with one O(8)U2Bi2 tetrahedra,  an edgeedge with one O(5)U4 tetrahedra, and edges with four equivalent O(6)U4 tetrahedra. In the eighth O site, O(8) is bonded to two equivalent U(8) and two equivalent Bi(1) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(11)Bi4 tetrahedra, corners with two equivalent O(7)U4 tetrahedra, corners with four equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(6)U4 tetrahedra,  an edgeedge with one O(11)Bi4 tetrahedra,  an edgeedge with one O(7)U4 tetrahedra, and edges with four equivalent O(9)U2Bi2 tetrahedra. In the ninth O site, O(9) is bonded to two equivalent U(8) and two equivalent Bi(1) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(6)U4 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra, corners with four equivalent O(7)U4 tetrahedra,  an edgeedge with one O(6)U4 tetrahedra, and edges with four equivalent O(8)U2Bi2 tetrahedra. In the tenth O site, O(10) is bonded to two equivalent U(1) and two equivalent Bi(2) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(11)Bi4 tetrahedra, corners with two equivalent O(14)U4 tetrahedra, corners with four equivalent O(10)U2Bi2 tetrahedra, corners with four equivalent O(13)U4 tetrahedra,  an edgeedge with one O(11)Bi4 tetrahedra,  an edgeedge with one O(14)U4 tetrahedra, and edges with four equivalent O(12)U2Bi2 tetrahedra. In the eleventh O site, O(11) is bonded to two equivalent Bi(1) and two equivalent Bi(2) atoms to form OBi4 tetrahedra that share corners with two equivalent O(10)U2Bi2 tetrahedra, corners with two equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra,  an edgeedge with one O(10)U2Bi2 tetrahedra, and  an edgeedge with one O(8)U2Bi2 tetrahedra. In the twelfth O site, O(12) is bonded to two equivalent U(1) and two equivalent Bi(2) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(13)U4 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(14)U4 tetrahedra,  an edgeedge with one O(13)U4 tetrahedra, and edges with four equivalent O(10)U2Bi2 tetrahedra. In the thirteenth O site, O(13) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(12)U2Bi2 tetrahedra, corners with two equivalent O(15)U4 tetrahedra, corners with four equivalent O(10)U2Bi2 tetrahedra, corners with four equivalent O(1)U4 tetrahedra, corners with four equivalent O(13)U4 tetrahedra,  an edgeedge with one O(12)U2Bi2 tetrahedra,  an edgeedge with one O(15)U4 tetrahedra, and edges with four equivalent O(14)U4 tetrahedra. In the fourteenth O site, O(14) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(10)U2Bi2 tetrahedra, corners with two equivalent O(1)U4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(14)U4 tetrahedra, corners with four equivalent O(15)U4 tetrahedra,  an edgeedge with one O(10)U2Bi2 tetrahedra,  an edgeedge with one O(1)U4 tetrahedra, and edges with four equivalent O(13)U4 tetrahedra. In the fifteenth O site, O(15) is bonded to two equivalent U(2) and two equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the sixteenth O site, O(16) is bonded to two equivalent U(3) and two equivalent U(4) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the seventeenth O site, O(17) is bonded to two equivalent U(4) and two equivalent U(5) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the eighteenth O site, O(18) is bonded to two equivalent U(5) and two equivalent U(6) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the nineteenth O site, O(19) is bonded to two equivalent U(6) and two equivalent U(7) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. is represented by the CIF file [CIF]
data_U8Bi2O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.835
_cell_length_b   3.835
_cell_length_c   27.476
_cell_angle_alpha   89.977
_cell_angle_beta   89.937
_cell_angle_gamma   89.997
_symmetry_Int_Tables_number   1
_cell_volume   404.070
_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
  U  U0  1  0.997  0.002  0.799  1.0
  U  U1  1  0.501  0.504  0.699  1.0
  U  U2  1  1.000  0.003  0.600  1.0
  U  U3  1  0.499  0.501  0.500  1.0
  U  U4  1  0.000  0.998  0.400  1.0
  U  U5  1  0.499  0.499  0.300  1.0
  U  U6  1  1.000  0.000  0.200  1.0
  U  U7  1  0.502  0.499  0.100  1.0
  Bi  Bi8  1  0.004  0.996  0.998  1.0
  Bi  Bi9  1  0.491  0.498  0.901  1.0
  O  O10  1  0.500  0.004  0.649  1.0
  O  O11  1  0.998  0.503  0.550  1.0
  O  O12  1  0.501  0.999  0.450  1.0
  O  O13  1  0.999  0.497  0.350  1.0
  O  O14  1  0.499  1.000  0.251  1.0
  O  O15  1  0.001  0.500  0.152  1.0
  O  O16  1  0.501  0.000  0.153  1.0
  O  O17  1  0.503  0.997  0.057  1.0
  O  O18  1  0.003  0.496  0.058  1.0
  O  O19  1  0.493  0.999  0.843  1.0
  O  O20  1  0.504  0.998  0.949  1.0
  O  O21  1  0.993  0.500  0.843  1.0
  O  O22  1  0.001  0.504  0.748  1.0
  O  O23  1  0.501  0.004  0.747  1.0
  O  O24  1  0.001  0.504  0.649  1.0
  O  O25  1  0.498  0.002  0.550  1.0
  O  O26  1  0.001  0.499  0.450  1.0
  O  O27  1  0.500  0.998  0.350  1.0
  O  O28  1  0.998  0.500  0.251  1.0
[/CIF]
.
The material structure described by U8Bi2O19 is alpha bismuth trifluoride-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent U sites. In the first U site, U(1) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(12), two equivalent O(13), and two equivalent O(14) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(13), two equivalent O(14), and two equivalent O(15) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(15), two equivalent O(16), and two equivalent O(2) atoms. In the fourth U site, U(4) is bonded in a body-centered cubic geometry to two equivalent O(16), two equivalent O(17), two equivalent O(2), and two equivalent O(3) atoms. In the fifth U site, U(5) is bonded in a body-centered cubic geometry to two equivalent O(17), two equivalent O(18), two equivalent O(3), and two equivalent O(4) atoms. In the sixth U site, U(6) is bonded in a body-centered cubic geometry to two equivalent O(18), two equivalent O(19), two equivalent O(4), and two equivalent O(5) atoms. In the seventh U site, U(7) is bonded in a body-centered cubic geometry to two equivalent O(19), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the eighth U site, U(8) is bonded in a body-centered cubic geometry to two equivalent O(6), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(8), and two equivalent O(9) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent U(2) and two equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the second O site, O(2) is bonded to two equivalent U(3) and two equivalent U(4) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the third O site, O(3) is bonded to two equivalent U(4) and two equivalent U(5) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to two equivalent U(5) and two equivalent U(6) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent U(6) and two equivalent U(7) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the sixth O site, O(6) is bonded to two equivalent U(7) and two equivalent U(8) atoms to form OU4 tetrahedra that share corners with two equivalent O(9)U2Bi2 tetrahedra, corners with two equivalent O(19)U4 tetrahedra, corners with four equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(5)U4 tetrahedra, corners with four equivalent O(6)U4 tetrahedra,  an edgeedge with one O(9)U2Bi2 tetrahedra,  an edgeedge with one O(19)U4 tetrahedra, and edges with four equivalent O(7)U4 tetrahedra. In the seventh O site, O(7) is bonded to two equivalent U(7) and two equivalent U(8) atoms to form OU4 tetrahedra that share corners with two equivalent O(8)U2Bi2 tetrahedra, corners with two equivalent O(5)U4 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra, corners with four equivalent O(19)U4 tetrahedra, corners with four equivalent O(7)U4 tetrahedra,  an edgeedge with one O(8)U2Bi2 tetrahedra,  an edgeedge with one O(5)U4 tetrahedra, and edges with four equivalent O(6)U4 tetrahedra. In the eighth O site, O(8) is bonded to two equivalent U(8) and two equivalent Bi(1) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(11)Bi4 tetrahedra, corners with two equivalent O(7)U4 tetrahedra, corners with four equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(6)U4 tetrahedra,  an edgeedge with one O(11)Bi4 tetrahedra,  an edgeedge with one O(7)U4 tetrahedra, and edges with four equivalent O(9)U2Bi2 tetrahedra. In the ninth O site, O(9) is bonded to two equivalent U(8) and two equivalent Bi(1) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(6)U4 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra, corners with four equivalent O(7)U4 tetrahedra,  an edgeedge with one O(6)U4 tetrahedra, and edges with four equivalent O(8)U2Bi2 tetrahedra. In the tenth O site, O(10) is bonded to two equivalent U(1) and two equivalent Bi(2) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(11)Bi4 tetrahedra, corners with two equivalent O(14)U4 tetrahedra, corners with four equivalent O(10)U2Bi2 tetrahedra, corners with four equivalent O(13)U4 tetrahedra,  an edgeedge with one O(11)Bi4 tetrahedra,  an edgeedge with one O(14)U4 tetrahedra, and edges with four equivalent O(12)U2Bi2 tetrahedra. In the eleventh O site, O(11) is bonded to two equivalent Bi(1) and two equivalent Bi(2) atoms to form OBi4 tetrahedra that share corners with two equivalent O(10)U2Bi2 tetrahedra, corners with two equivalent O(8)U2Bi2 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(9)U2Bi2 tetrahedra,  an edgeedge with one O(10)U2Bi2 tetrahedra, and  an edgeedge with one O(8)U2Bi2 tetrahedra. In the twelfth O site, O(12) is bonded to two equivalent U(1) and two equivalent Bi(2) atoms to form OU2Bi2 tetrahedra that share corners with two equivalent O(13)U4 tetrahedra, corners with four equivalent O(11)Bi4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(14)U4 tetrahedra,  an edgeedge with one O(13)U4 tetrahedra, and edges with four equivalent O(10)U2Bi2 tetrahedra. In the thirteenth O site, O(13) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(12)U2Bi2 tetrahedra, corners with two equivalent O(15)U4 tetrahedra, corners with four equivalent O(10)U2Bi2 tetrahedra, corners with four equivalent O(1)U4 tetrahedra, corners with four equivalent O(13)U4 tetrahedra,  an edgeedge with one O(12)U2Bi2 tetrahedra,  an edgeedge with one O(15)U4 tetrahedra, and edges with four equivalent O(14)U4 tetrahedra. In the fourteenth O site, O(14) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(10)U2Bi2 tetrahedra, corners with two equivalent O(1)U4 tetrahedra, corners with four equivalent O(12)U2Bi2 tetrahedra, corners with four equivalent O(14)U4 tetrahedra, corners with four equivalent O(15)U4 tetrahedra,  an edgeedge with one O(10)U2Bi2 tetrahedra,  an edgeedge with one O(1)U4 tetrahedra, and edges with four equivalent O(13)U4 tetrahedra. In the fifteenth O site, O(15) is bonded to two equivalent U(2) and two equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the sixteenth O site, O(16) is bonded to two equivalent U(3) and two equivalent U(4) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the seventeenth O site, O(17) is bonded to two equivalent U(4) and two equivalent U(5) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the eighteenth O site, O(18) is bonded to two equivalent U(5) and two equivalent U(6) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the nineteenth O site, O(19) is bonded to two equivalent U(6) and two equivalent U(7) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. is represented by the CIF file [CIF]
data_U8Bi2O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.835
_cell_length_b   3.835
_cell_length_c   27.476
_cell_angle_alpha   89.977
_cell_angle_beta   89.937
_cell_angle_gamma   89.997
_symmetry_Int_Tables_number   1
_cell_volume   404.070
_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
  U  U0  1  0.997  0.002  0.799  1.0
  U  U1  1  0.501  0.504  0.699  1.0
  U  U2  1  1.000  0.003  0.600  1.0
  U  U3  1  0.499  0.501  0.500  1.0
  U  U4  1  0.000  0.998  0.400  1.0
  U  U5  1  0.499  0.499  0.300  1.0
  U  U6  1  1.000  0.000  0.200  1.0
  U  U7  1  0.502  0.499  0.100  1.0
  Bi  Bi8  1  0.004  0.996  0.998  1.0
  Bi  Bi9  1  0.491  0.498  0.901  1.0
  O  O10  1  0.500  0.004  0.649  1.0
  O  O11  1  0.998  0.503  0.550  1.0
  O  O12  1  0.501  0.999  0.450  1.0
  O  O13  1  0.999  0.497  0.350  1.0
  O  O14  1  0.499  1.000  0.251  1.0
  O  O15  1  0.001  0.500  0.152  1.0
  O  O16  1  0.501  0.000  0.153  1.0
  O  O17  1  0.503  0.997  0.057  1.0
  O  O18  1  0.003  0.496  0.058  1.0
  O  O19  1  0.493  0.999  0.843  1.0
  O  O20  1  0.504  0.998  0.949  1.0
  O  O21  1  0.993  0.500  0.843  1.0
  O  O22  1  0.001  0.504  0.748  1.0
  O  O23  1  0.501  0.004  0.747  1.0
  O  O24  1  0.001  0.504  0.649  1.0
  O  O25  1  0.498  0.002  0.550  1.0
  O  O26  1  0.001  0.499  0.450  1.0
  O  O27  1  0.500  0.998  0.350  1.0
  O  O28  1  0.998  0.500  0.251  1.0
[/CIF]
.