The structure described by Ba5As2(SO6)2 crystallizes in the monoclinic Pm space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(15), one O(9), two equivalent O(2), and two equivalent O(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(13), one O(7), two equivalent O(3), and two equivalent O(5) atoms. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(14), one O(8), two equivalent O(1), and two equivalent O(6) atoms. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(12), one O(18), two equivalent O(1), and two equivalent O(5) atoms. In the fifth Ba site, Ba(5) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(10), one O(16), two equivalent O(2), and two equivalent O(6) atoms. In the sixth Ba site, Ba(6) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(11), one O(17), two equivalent O(3), and two equivalent O(4) atoms. In the seventh Ba site, Ba(7) is bonded in a 9-coordinate geometry to one O(16), one O(17), one O(18), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the eighth Ba site, Ba(8) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(2), and one O(3) atom. There are four inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(13), one O(8), and two equivalent O(2) atoms. In the second As site, As(2) is bonded in a tetrahedral geometry to one O(14), one O(9), and two equivalent O(3) atoms. In the third As site, As(3) is bonded in a tetrahedral geometry to one O(10), one O(18), and two equivalent O(4) atoms. In the fourth As site, As(4) is bonded in a tetrahedral geometry to one O(12), one O(17), and two equivalent O(6) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Ba(6) atom to form SBa6 octahedra that share  a cornercorner with one O(17)Ba3As tetrahedra and faces with two equivalent S(1)Ba6 octahedra. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(15), one O(7), and two equivalent O(1) atoms. In the third S site, S(3) is bonded in a tetrahedral geometry to one O(11), one O(16), and two equivalent O(5) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ba(3), one Ba(4), one Ba(8), and one S(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(5), one Ba(8), and one As(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(6), one Ba(8), and one As(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(6), one Ba(7), and one As(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Ba(2), one Ba(4), one Ba(7), and one S(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(5), one Ba(7), and one As(4) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Ba(2), two equivalent Ba(7), and one S(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(7), and one As(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(7), and one As(2) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Ba(5), two equivalent Ba(8), and one As(3) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Ba(6), two equivalent Ba(8), and one S(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(4), two equivalent Ba(8), and one As(4) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(8), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(8), and one As(2) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Ba(1), two equivalent Ba(8), and one S(2) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one Ba(5), two equivalent Ba(7), and one S(3) atom. In the seventeenth O site, O(17) is bonded to one Ba(6), two equivalent Ba(7), and one As(4) atom to form distorted OBa3As tetrahedra that share corners with two equivalent S(1)Ba6 octahedra. The corner-sharing octahedral tilt angles are 44°. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Ba(4), two equivalent Ba(7), and one As(3) atom. is represented by the CIF card [CIF]
data_Ba5As2(SO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   10.701
_cell_length_c   10.706
_cell_angle_alpha   60.087
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   779.447
_cell_formula_units_Z   2
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
  Ba  Ba0  1  0.000  0.006  0.229  1.0
  Ba  Ba1  1  0.000  0.233  0.770  1.0
  Ba  Ba2  1  0.000  0.755  0.016  1.0
  Ba  Ba3  1  0.500  0.989  0.772  1.0
  Ba  Ba4  1  0.500  0.772  0.236  1.0
  Ba  Ba5  1  0.500  0.235  0.999  1.0
  Ba  Ba6  1  0.750  0.333  0.326  1.0
  Ba  Ba7  1  0.251  0.663  0.666  1.0
  Ba  Ba8  1  0.749  0.663  0.666  1.0
  Ba  Ba9  1  0.250  0.333  0.326  1.0
  As  As10  1  0.000  0.619  0.415  1.0
  As  As11  1  0.000  0.417  0.964  1.0
  As  As12  1  0.500  0.034  0.383  1.0
  As  As13  1  0.500  0.586  0.034  1.0
  S  S14  1  0.750  0.002  0.992  1.0
  S  S15  1  0.250  0.002  0.992  1.0
  S  S16  1  0.000  0.964  0.621  1.0
  S  S17  1  0.500  0.379  0.584  1.0
  O  O18  1  0.155  0.919  0.713  1.0
  O  O19  1  0.177  0.729  0.365  1.0
  O  O20  1  0.178  0.365  0.906  1.0
  O  O21  1  0.678  0.091  0.274  1.0
  O  O22  1  0.655  0.286  0.631  1.0
  O  O23  1  0.677  0.635  0.094  1.0
  O  O24  1  0.322  0.091  0.274  1.0
  O  O25  1  0.345  0.286  0.631  1.0
  O  O26  1  0.323  0.635  0.094  1.0
  O  O27  1  0.845  0.919  0.713  1.0
  O  O28  1  0.823  0.729  0.365  1.0
  O  O29  1  0.822  0.365  0.906  1.0
  O  O30  1  0.000  0.125  0.523  1.0
  O  O31  1  0.000  0.506  0.344  1.0
  O  O32  1  0.000  0.342  0.149  1.0
  O  O33  1  0.500  0.849  0.494  1.0
  O  O34  1  0.500  0.477  0.646  1.0
  O  O35  1  0.500  0.661  0.849  1.0
  O  O36  1  0.000  0.523  0.602  1.0
  O  O37  1  0.000  0.604  0.873  1.0
  O  O38  1  0.000  0.889  0.533  1.0
  O  O39  1  0.500  0.467  0.422  1.0
  O  O40  1  0.500  0.399  0.126  1.0
  O  O41  1  0.500  0.125  0.479  1.0
[/CIF]
.
The structure described by Ba5As2(SO6)2 crystallizes in the monoclinic Pm space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(15), one O(9), two equivalent O(2), and two equivalent O(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(13), one O(7), two equivalent O(3), and two equivalent O(5) atoms. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(14), one O(8), two equivalent O(1), and two equivalent O(6) atoms. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(12), one O(18), two equivalent O(1), and two equivalent O(5) atoms. In the fifth Ba site, Ba(5) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(10), one O(16), two equivalent O(2), and two equivalent O(6) atoms. In the sixth Ba site, Ba(6) is bonded in a 8-coordinate geometry to two equivalent S(1), one O(11), one O(17), two equivalent O(3), and two equivalent O(4) atoms. In the seventh Ba site, Ba(7) is bonded in a 9-coordinate geometry to one O(16), one O(17), one O(18), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the eighth Ba site, Ba(8) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(2), and one O(3) atom. There are four inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(13), one O(8), and two equivalent O(2) atoms. In the second As site, As(2) is bonded in a tetrahedral geometry to one O(14), one O(9), and two equivalent O(3) atoms. In the third As site, As(3) is bonded in a tetrahedral geometry to one O(10), one O(18), and two equivalent O(4) atoms. In the fourth As site, As(4) is bonded in a tetrahedral geometry to one O(12), one O(17), and two equivalent O(6) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Ba(6) atom to form SBa6 octahedra that share  a cornercorner with one O(17)Ba3As tetrahedra and faces with two equivalent S(1)Ba6 octahedra. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(15), one O(7), and two equivalent O(1) atoms. In the third S site, S(3) is bonded in a tetrahedral geometry to one O(11), one O(16), and two equivalent O(5) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ba(3), one Ba(4), one Ba(8), and one S(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(5), one Ba(8), and one As(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(6), one Ba(8), and one As(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(6), one Ba(7), and one As(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Ba(2), one Ba(4), one Ba(7), and one S(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(5), one Ba(7), and one As(4) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Ba(2), two equivalent Ba(7), and one S(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(7), and one As(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(7), and one As(2) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Ba(5), two equivalent Ba(8), and one As(3) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Ba(6), two equivalent Ba(8), and one S(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(4), two equivalent Ba(8), and one As(4) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(8), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(8), and one As(2) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Ba(1), two equivalent Ba(8), and one S(2) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one Ba(5), two equivalent Ba(7), and one S(3) atom. In the seventeenth O site, O(17) is bonded to one Ba(6), two equivalent Ba(7), and one As(4) atom to form distorted OBa3As tetrahedra that share corners with two equivalent S(1)Ba6 octahedra. The corner-sharing octahedral tilt angles are 44°. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Ba(4), two equivalent Ba(7), and one As(3) atom. is represented by the CIF card [CIF]
data_Ba5As2(SO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   10.701
_cell_length_c   10.706
_cell_angle_alpha   60.087
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   779.447
_cell_formula_units_Z   2
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
  Ba  Ba0  1  0.000  0.006  0.229  1.0
  Ba  Ba1  1  0.000  0.233  0.770  1.0
  Ba  Ba2  1  0.000  0.755  0.016  1.0
  Ba  Ba3  1  0.500  0.989  0.772  1.0
  Ba  Ba4  1  0.500  0.772  0.236  1.0
  Ba  Ba5  1  0.500  0.235  0.999  1.0
  Ba  Ba6  1  0.750  0.333  0.326  1.0
  Ba  Ba7  1  0.251  0.663  0.666  1.0
  Ba  Ba8  1  0.749  0.663  0.666  1.0
  Ba  Ba9  1  0.250  0.333  0.326  1.0
  As  As10  1  0.000  0.619  0.415  1.0
  As  As11  1  0.000  0.417  0.964  1.0
  As  As12  1  0.500  0.034  0.383  1.0
  As  As13  1  0.500  0.586  0.034  1.0
  S  S14  1  0.750  0.002  0.992  1.0
  S  S15  1  0.250  0.002  0.992  1.0
  S  S16  1  0.000  0.964  0.621  1.0
  S  S17  1  0.500  0.379  0.584  1.0
  O  O18  1  0.155  0.919  0.713  1.0
  O  O19  1  0.177  0.729  0.365  1.0
  O  O20  1  0.178  0.365  0.906  1.0
  O  O21  1  0.678  0.091  0.274  1.0
  O  O22  1  0.655  0.286  0.631  1.0
  O  O23  1  0.677  0.635  0.094  1.0
  O  O24  1  0.322  0.091  0.274  1.0
  O  O25  1  0.345  0.286  0.631  1.0
  O  O26  1  0.323  0.635  0.094  1.0
  O  O27  1  0.845  0.919  0.713  1.0
  O  O28  1  0.823  0.729  0.365  1.0
  O  O29  1  0.822  0.365  0.906  1.0
  O  O30  1  0.000  0.125  0.523  1.0
  O  O31  1  0.000  0.506  0.344  1.0
  O  O32  1  0.000  0.342  0.149  1.0
  O  O33  1  0.500  0.849  0.494  1.0
  O  O34  1  0.500  0.477  0.646  1.0
  O  O35  1  0.500  0.661  0.849  1.0
  O  O36  1  0.000  0.523  0.602  1.0
  O  O37  1  0.000  0.604  0.873  1.0
  O  O38  1  0.000  0.889  0.533  1.0
  O  O39  1  0.500  0.467  0.422  1.0
  O  O40  1  0.500  0.399  0.126  1.0
  O  O41  1  0.500  0.125  0.479  1.0
[/CIF]
.