The structure described by K6Bi6O19 crystallizes in the monoclinic C2 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the second K site, K(2) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(4), one O(5), one O(8), one O(9), and two equivalent O(7) atoms. In the third K site, K(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second Bi site, Bi(2) is bonded to two equivalent O(11), two equivalent O(5), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. In the third Bi site, Bi(3) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. In the fourth Bi site, Bi(4) is bonded to one O(6), one O(7), one O(8), one O(9), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. There are eleven inequivalent O sites. In the first O site, O(7) is bonded in a 4-coordinate geometry to two equivalent K(2), one Bi(3), and one Bi(4) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one K(2), one Bi(1), and one Bi(4) atom. In the third O site, O(9) is bonded to one K(2), one K(3), one Bi(2), and one Bi(4) atom to form distorted corner-sharing OK2Bi2 trigonal pyramids. In the fourth O site, O(10) is bonded to one K(2), one K(3), one Bi(1), and one Bi(3) atom to form distorted corner-sharing OK2Bi2 tetrahedra. In the fifth O site, O(11) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Bi(2), and one Bi(3) atom. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent K(2), and two equivalent K(3) atoms. In the seventh O site, O(2) is bonded in a distorted water-like geometry to two equivalent K(2), two equivalent K(3), and two equivalent Bi(3) atoms. In the eighth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Bi(3) atoms. In the ninth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one K(2), one K(3), and two equivalent Bi(4) atoms. In the tenth O site, O(5) is bonded in a distorted water-like geometry to one K(1), one K(2), one K(3), one Bi(1), and one Bi(2) atom. In the eleventh O site, O(6) is bonded in a 4-coordinate geometry to one K(1), one K(3), one Bi(3), and one Bi(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K6Bi6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.786
_cell_length_b   8.786
_cell_length_c   10.239
_cell_angle_alpha   55.488
_cell_angle_beta   55.488
_cell_angle_gamma   71.286
_symmetry_Int_Tables_number   1
_cell_volume   536.702
_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
  K  K0  1  0.709  0.028  0.264  1.0
  K  K1  1  0.972  0.291  0.736  1.0
  K  K2  1  0.370  0.014  0.995  1.0
  K  K3  1  0.986  0.630  0.005  1.0
  K  K4  1  0.330  0.000  0.665  1.0
  K  K5  1  1.000  0.670  0.335  1.0
  Bi  Bi6  1  0.338  0.662  0.500  1.0
  Bi  Bi7  1  0.657  0.343  0.500  1.0
  Bi  Bi8  1  0.499  0.506  0.158  1.0
  Bi  Bi9  1  0.494  0.501  0.842  1.0
  Bi  Bi10  1  0.156  0.162  0.339  1.0
  Bi  Bi11  1  0.838  0.844  0.661  1.0
  O  O12  1  0.040  0.960  0.000  1.0
  O  O13  1  0.355  0.645  0.000  1.0
  O  O14  1  0.634  0.366  0.000  1.0
  O  O15  1  0.006  0.003  0.635  1.0
  O  O16  1  0.997  0.994  0.365  1.0
  O  O17  1  0.637  0.641  0.367  1.0
  O  O18  1  0.359  0.363  0.633  1.0
  O  O19  1  0.284  0.295  0.376  1.0
  O  O20  1  0.705  0.716  0.624  1.0
  O  O21  1  0.700  0.729  0.949  1.0
  O  O22  1  0.271  0.300  0.051  1.0
  O  O23  1  0.376  0.956  0.337  1.0
  O  O24  1  0.623  0.052  0.654  1.0
  O  O25  1  0.948  0.377  0.346  1.0
  O  O26  1  0.044  0.624  0.663  1.0
  O  O27  1  0.331  0.667  0.289  1.0
  O  O28  1  0.656  0.333  0.719  1.0
  O  O29  1  0.333  0.669  0.711  1.0
  O  O30  1  0.667  0.344  0.281  1.0
[/CIF]
.
The structure described by K6Bi6O19 crystallizes in the monoclinic C2 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the second K site, K(2) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(4), one O(5), one O(8), one O(9), and two equivalent O(7) atoms. In the third K site, K(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second Bi site, Bi(2) is bonded to two equivalent O(11), two equivalent O(5), and two equivalent O(9) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. In the third Bi site, Bi(3) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. In the fourth Bi site, Bi(4) is bonded to one O(6), one O(7), one O(8), one O(9), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. There are eleven inequivalent O sites. In the first O site, O(7) is bonded in a 4-coordinate geometry to two equivalent K(2), one Bi(3), and one Bi(4) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one K(2), one Bi(1), and one Bi(4) atom. In the third O site, O(9) is bonded to one K(2), one K(3), one Bi(2), and one Bi(4) atom to form distorted corner-sharing OK2Bi2 trigonal pyramids. In the fourth O site, O(10) is bonded to one K(2), one K(3), one Bi(1), and one Bi(3) atom to form distorted corner-sharing OK2Bi2 tetrahedra. In the fifth O site, O(11) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Bi(2), and one Bi(3) atom. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent K(2), and two equivalent K(3) atoms. In the seventh O site, O(2) is bonded in a distorted water-like geometry to two equivalent K(2), two equivalent K(3), and two equivalent Bi(3) atoms. In the eighth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Bi(3) atoms. In the ninth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one K(2), one K(3), and two equivalent Bi(4) atoms. In the tenth O site, O(5) is bonded in a distorted water-like geometry to one K(1), one K(2), one K(3), one Bi(1), and one Bi(2) atom. In the eleventh O site, O(6) is bonded in a 4-coordinate geometry to one K(1), one K(3), one Bi(3), and one Bi(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K6Bi6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.786
_cell_length_b   8.786
_cell_length_c   10.239
_cell_angle_alpha   55.488
_cell_angle_beta   55.488
_cell_angle_gamma   71.286
_symmetry_Int_Tables_number   1
_cell_volume   536.702
_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
  K  K0  1  0.709  0.028  0.264  1.0
  K  K1  1  0.972  0.291  0.736  1.0
  K  K2  1  0.370  0.014  0.995  1.0
  K  K3  1  0.986  0.630  0.005  1.0
  K  K4  1  0.330  0.000  0.665  1.0
  K  K5  1  1.000  0.670  0.335  1.0
  Bi  Bi6  1  0.338  0.662  0.500  1.0
  Bi  Bi7  1  0.657  0.343  0.500  1.0
  Bi  Bi8  1  0.499  0.506  0.158  1.0
  Bi  Bi9  1  0.494  0.501  0.842  1.0
  Bi  Bi10  1  0.156  0.162  0.339  1.0
  Bi  Bi11  1  0.838  0.844  0.661  1.0
  O  O12  1  0.040  0.960  0.000  1.0
  O  O13  1  0.355  0.645  0.000  1.0
  O  O14  1  0.634  0.366  0.000  1.0
  O  O15  1  0.006  0.003  0.635  1.0
  O  O16  1  0.997  0.994  0.365  1.0
  O  O17  1  0.637  0.641  0.367  1.0
  O  O18  1  0.359  0.363  0.633  1.0
  O  O19  1  0.284  0.295  0.376  1.0
  O  O20  1  0.705  0.716  0.624  1.0
  O  O21  1  0.700  0.729  0.949  1.0
  O  O22  1  0.271  0.300  0.051  1.0
  O  O23  1  0.376  0.956  0.337  1.0
  O  O24  1  0.623  0.052  0.654  1.0
  O  O25  1  0.948  0.377  0.346  1.0
  O  O26  1  0.044  0.624  0.663  1.0
  O  O27  1  0.331  0.667  0.289  1.0
  O  O28  1  0.656  0.333  0.719  1.0
  O  O29  1  0.333  0.669  0.711  1.0
  O  O30  1  0.667  0.344  0.281  1.0
[/CIF]
.