The material described by K6As8O19 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(19), one O(8), and two equivalent O(9) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(16), one O(7), and two equivalent O(8) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(3), one O(4), one O(5), one O(6), and two equivalent O(11) atoms. In the fourth K site, K(4) is bonded in a 9-coordinate geometry to one O(11), one O(19), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(12) atoms. In the fifth K site, K(5) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(14), one O(17), and two equivalent O(1) atoms. In the sixth K site, K(6) is bonded in a 7-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(18), and two equivalent O(2) atoms. There are eight inequivalent As sites. In the first As site, As(1) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(9) atom. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(10), one O(5), and one O(6) atom. In the third As site, As(3) is bonded in a distorted T-shaped geometry to one O(1), one O(13), and one O(14) atom. In the fourth As site, As(4) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(2) atom. In the fifth As site, As(5) is bonded in a distorted T-shaped geometry to one O(11), one O(3), and one O(4) atom. In the sixth As site, As(6) is bonded in a distorted T-shaped geometry to one O(12), one O(5), and one O(6) atom. In the seventh As site, As(7) is bonded in a distorted trigonal non-coplanar geometry to one O(13), one O(14), and one O(7) atom. In the eighth As site, As(8) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(8) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(5), and one As(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(4), two equivalent K(6), and one As(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(1), and one As(5) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(1), and one As(5) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(2), and one As(6) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(2), and one As(6) atom. In the seventh O site, O(7) is bonded in a linear geometry to one K(2) and one As(7) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one As(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(1) and one As(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one K(2), one As(2), and one O(18) atom. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one K(4), one K(5), two equivalent K(3), and one As(5) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(3), one K(6), two equivalent K(4), and one As(6) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one K(1), one K(5), one As(3), and one As(7) atom. In the fourteenth O site, O(14) is bonded in a distorted tetrahedral geometry to one K(1), one K(5), one As(3), and one As(7) atom. In the fifteenth O site, O(15) is bonded to one K(2), one K(6), one As(4), and one As(8) atom to form distorted edge-sharing OK2As2 tetrahedra. In the sixteenth O site, O(16) is bonded to one K(2), one K(6), one As(4), and one As(8) atom to form distorted edge-sharing OK2As2 tetrahedra. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one K(5), one K(6), and one O(19) atom. In the eighteenth O site, O(18) is bonded in a water-like geometry to one K(6) and one O(10) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one K(1), one K(4), and one O(17) atom. is represented by the CIF card [CIF]
data_K6As8O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.397
_cell_length_b   11.128
_cell_length_c   12.944
_cell_angle_alpha   103.590
_cell_angle_beta   101.835
_cell_angle_gamma   104.006
_symmetry_Int_Tables_number   1
_cell_volume   704.259
_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  0.837  0.022  0.655  1.0
  K  K1  1  0.213  0.022  0.396  1.0
  K  K2  1  0.782  0.599  0.966  1.0
  K  K3  1  0.206  0.385  0.019  1.0
  K  K4  1  0.343  0.818  0.857  1.0
  K  K5  1  0.668  0.176  0.146  1.0
  As  As6  1  0.498  0.286  0.707  1.0
  As  As7  1  0.500  0.702  0.293  1.0
  As  As8  1  0.684  0.681  0.677  1.0
  As  As9  1  0.329  0.332  0.321  1.0
  As  As10  1  0.121  0.469  0.771  1.0
  As  As11  1  0.878  0.527  0.225  1.0
  As  As12  1  0.135  0.716  0.544  1.0
  As  As13  1  0.865  0.273  0.455  1.0
  O  O14  1  0.785  0.742  0.819  1.0
  O  O15  1  0.225  0.269  0.179  1.0
  O  O16  1  0.339  0.366  0.803  1.0
  O  O17  1  0.835  0.361  0.802  1.0
  O  O18  1  0.661  0.634  0.197  1.0
  O  O19  1  0.173  0.635  0.198  1.0
  O  O20  1  0.149  0.821  0.467  1.0
  O  O21  1  0.816  0.137  0.498  1.0
  O  O22  1  0.416  0.129  0.711  1.0
  O  O23  1  0.553  0.876  0.259  1.0
  O  O24  1  0.239  0.583  0.899  1.0
  O  O25  1  0.761  0.418  0.096  1.0
  O  O26  1  0.972  0.785  0.648  1.0
  O  O27  1  0.468  0.784  0.648  1.0
  O  O28  1  0.041  0.226  0.350  1.0
  O  O29  1  0.542  0.227  0.347  1.0
  O  O30  1  0.315  0.092  0.919  1.0
  O  O31  1  0.567  0.874  0.158  1.0
  O  O32  1  0.072  0.063  0.914  1.0
[/CIF]
.
The material described by K6As8O19 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(19), one O(8), and two equivalent O(9) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(16), one O(7), and two equivalent O(8) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(3), one O(4), one O(5), one O(6), and two equivalent O(11) atoms. In the fourth K site, K(4) is bonded in a 9-coordinate geometry to one O(11), one O(19), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(12) atoms. In the fifth K site, K(5) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(14), one O(17), and two equivalent O(1) atoms. In the sixth K site, K(6) is bonded in a 7-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(18), and two equivalent O(2) atoms. There are eight inequivalent As sites. In the first As site, As(1) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(9) atom. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(10), one O(5), and one O(6) atom. In the third As site, As(3) is bonded in a distorted T-shaped geometry to one O(1), one O(13), and one O(14) atom. In the fourth As site, As(4) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(2) atom. In the fifth As site, As(5) is bonded in a distorted T-shaped geometry to one O(11), one O(3), and one O(4) atom. In the sixth As site, As(6) is bonded in a distorted T-shaped geometry to one O(12), one O(5), and one O(6) atom. In the seventh As site, As(7) is bonded in a distorted trigonal non-coplanar geometry to one O(13), one O(14), and one O(7) atom. In the eighth As site, As(8) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(8) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(5), and one As(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(4), two equivalent K(6), and one As(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(1), and one As(5) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(1), and one As(5) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(2), and one As(6) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(3), one K(4), one As(2), and one As(6) atom. In the seventh O site, O(7) is bonded in a linear geometry to one K(2) and one As(7) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one As(8) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(1) and one As(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one K(2), one As(2), and one O(18) atom. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one K(4), one K(5), two equivalent K(3), and one As(5) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(3), one K(6), two equivalent K(4), and one As(6) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one K(1), one K(5), one As(3), and one As(7) atom. In the fourteenth O site, O(14) is bonded in a distorted tetrahedral geometry to one K(1), one K(5), one As(3), and one As(7) atom. In the fifteenth O site, O(15) is bonded to one K(2), one K(6), one As(4), and one As(8) atom to form distorted edge-sharing OK2As2 tetrahedra. In the sixteenth O site, O(16) is bonded to one K(2), one K(6), one As(4), and one As(8) atom to form distorted edge-sharing OK2As2 tetrahedra. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one K(5), one K(6), and one O(19) atom. In the eighteenth O site, O(18) is bonded in a water-like geometry to one K(6) and one O(10) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one K(1), one K(4), and one O(17) atom. is represented by the CIF card [CIF]
data_K6As8O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.397
_cell_length_b   11.128
_cell_length_c   12.944
_cell_angle_alpha   103.590
_cell_angle_beta   101.835
_cell_angle_gamma   104.006
_symmetry_Int_Tables_number   1
_cell_volume   704.259
_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  0.837  0.022  0.655  1.0
  K  K1  1  0.213  0.022  0.396  1.0
  K  K2  1  0.782  0.599  0.966  1.0
  K  K3  1  0.206  0.385  0.019  1.0
  K  K4  1  0.343  0.818  0.857  1.0
  K  K5  1  0.668  0.176  0.146  1.0
  As  As6  1  0.498  0.286  0.707  1.0
  As  As7  1  0.500  0.702  0.293  1.0
  As  As8  1  0.684  0.681  0.677  1.0
  As  As9  1  0.329  0.332  0.321  1.0
  As  As10  1  0.121  0.469  0.771  1.0
  As  As11  1  0.878  0.527  0.225  1.0
  As  As12  1  0.135  0.716  0.544  1.0
  As  As13  1  0.865  0.273  0.455  1.0
  O  O14  1  0.785  0.742  0.819  1.0
  O  O15  1  0.225  0.269  0.179  1.0
  O  O16  1  0.339  0.366  0.803  1.0
  O  O17  1  0.835  0.361  0.802  1.0
  O  O18  1  0.661  0.634  0.197  1.0
  O  O19  1  0.173  0.635  0.198  1.0
  O  O20  1  0.149  0.821  0.467  1.0
  O  O21  1  0.816  0.137  0.498  1.0
  O  O22  1  0.416  0.129  0.711  1.0
  O  O23  1  0.553  0.876  0.259  1.0
  O  O24  1  0.239  0.583  0.899  1.0
  O  O25  1  0.761  0.418  0.096  1.0
  O  O26  1  0.972  0.785  0.648  1.0
  O  O27  1  0.468  0.784  0.648  1.0
  O  O28  1  0.041  0.226  0.350  1.0
  O  O29  1  0.542  0.227  0.347  1.0
  O  O30  1  0.315  0.092  0.919  1.0
  O  O31  1  0.567  0.874  0.158  1.0
  O  O32  1  0.072  0.063  0.914  1.0
[/CIF]
.