data_As3(HO2)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   5.84
_cell_length_c   7.47
_cell_angle_alpha   100.63
_cell_angle_beta   94.89
_cell_angle_gamma   101.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   As3(HO2)5
_chemical_formula_sum   'As3 H5 O10'
_cell_volume   200.04
_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
  As  As0  1  0.08  0.24  0.64  1.0
  As  As1  1  0.38  0.95  0.7  1.0
  As  As2  1  0.65  0.25  0.59  1.0
  H  H3  1  0.37  0.85  0.78  1.0
  H  H4  1  0.66  0.35  0.51  1.0
  H  H5  1  0.0  0.0  0.0  1.0
  H  H6  1  0.71  0.22  0.47  1.0
  H  H7  1  0.33  0.98  0.81  1.0
  O  O8  1  0.2  0.58  0.23  1.0
  O  O9  1  0.73  0.35  0.38  1.0
  O  O10  1  0.3  0.84  0.9  1.0
  O  O11  1  0.05  0.97  0.09  1.0
  O  O12  1  0.21  0.55  0.41  1.0
  O  O13  1  0.82  0.65  0.87  1.0
  O  O14  1  0.92  0.64  0.37  1.0
  O  O15  1  0.11  0.56  0.92  1.0
  O  O16  1  0.98  0.22  0.19  1.0
  O  O17  1  0.83  0.62  0.06  1.0

data_As3(HO2)5
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.79
_cell_length_b   5.84
_cell_length_c   7.47
_cell_angle_alpha   100.63
_cell_angle_beta   94.89
_cell_angle_gamma   101.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   As3(HO2)5
_chemical_formula_sum   'As3 H5 O10'
_cell_volume   200.04
_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
  As  As0  1  0.08  0.24  0.64  1.0
  As  As1  1  0.38  0.95  0.7  1.0
  As  As2  1  0.65  0.25  0.59  1.0
  H  H3  1  0.0  0.0  0.0  1.0
  H  H4  1  0.33  0.98  0.81  1.0
  H  H5  1  0.37  0.85  0.78  1.0
  H  H6  1  0.66  0.35  0.51  1.0
  H  H7  1  0.71  0.22  0.47  1.0
  O  O8  1  0.05  0.97  0.09  1.0
  O  O9  1  0.11  0.56  0.92  1.0
  O  O10  1  0.2  0.58  0.23  1.0
  O  O11  1  0.21  0.55  0.41  1.0
  O  O12  1  0.3  0.84  0.9  1.0
  O  O13  1  0.73  0.35  0.38  1.0
  O  O14  1  0.82  0.65  0.87  1.0
  O  O15  1  0.83  0.62  0.06  1.0
  O  O16  1  0.92  0.64  0.37  1.0
  O  O17  1  0.98  0.22  0.19  1.0

As As As H H H H H O O O O O O O O O O
As As As H H H H H O O O O O O O O O O 0 6 - o o 0 4 - o o 0 2 - o o 0 15 o o o 0 7 o - o 0 1 o - o 1 7 o o o 1 3 o o o 2 4 o o o 2 6 o o o 3 7 o o o 3 10 o o o 4 6 o o o 4 9 o o o 5 11 o - o 5 16 - o o 6 9 o o o 7 10 o o o 8 12 o o o 8 14 - o o 9 14 o o o 9 16 o o o 10 15 o o o 11 16 - + o 12 14 - o o 13 15 + o o 13 17 o o + 15 17 - o + 
(HAsO2)4(H2AsO4)2H2O2O2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one water molecule, one water atom, one H2AsO4 cluster, and one HAsO2 cluster. In the H2AsO4 cluster, As(2,3) is bonded in a 2-coordinate geometry to one H(1) and one H(5) atom. The As(2,3)-H(1) bond length is 0.90 Å. The As(2,3)-H(5) bond length is 0.93 Å. There are two inequivalent H sites. In the first H site, H(2) is bonded in a 3-coordinate geometry to one As(2,3); one H(4); and one O(2) atom. The H(2)-As(2,3) bond length is 0.90 Å. The H(2)-H(4) bond length is 0.82 Å. The H(2)-O(2) bond length is 1.05 Å. In the second H site, H(4) is bonded in a 3-coordinate geometry to one As(2,3); one H(2); and one O(2) atom. The H(4)-As(2,3) bond length is 0.93 Å. The H(4)-O(2) bond length is 1.12 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one O(5) and one O(7) atom. The O(1)-O(5) bond length is 1.44 Å. The O(1)-O(7) bond length is 1.83 Å. In the second O site, O(2) is bonded in a 2-coordinate geometry to one H(2), one H(4), and one O(7) atom. The O(2)-O(7) bond length is 1.74 Å. In the third O site, O(5) is bonded in a 2-coordinate geometry to one O(1) and one O(7) atom. The O(5)-O(7) bond length is 1.62 Å. In the fourth O site, O(7) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(5) atom. In the HAsO2 cluster, there are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted single-bond geometry to one O(8) atom. The As(1)-O(8) bond length is 2.48 Å. In the second As site, As(2,3) is bonded in a 2-coordinate geometry to one H(1) and one H(5) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a 3-coordinate geometry to one As(2,3); one H(5); and one O(3) atom. The H(1)-H(5) bond length is 0.82 Å. The H(1)-O(3) bond length is 1.05 Å. In the second H site, H(5) is bonded in a 3-coordinate geometry to one As(2,3); one H(1); and one O(3) atom. The H(5)-O(3) bond length is 1.12 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 2-coordinate geometry to one H(1), one H(5), and one O(8) atom. The O(3)-O(8) bond length is 1.74 Å. In the second O site, O(6) is bonded in a 2-coordinate geometry to one O(10) and one O(8) atom. The O(6)-O(10) bond length is 1.44 Å. The O(6)-O(8) bond length is 1.62 Å. In the third O site, O(8) is bonded in a 4-coordinate geometry to one As(1), one O(10), one O(3), and one O(6) atom. The O(8)-O(10) bond length is 1.83 Å. In the fourth O site, O(10) is bonded in a 2-coordinate geometry to one O(6) and one O(8) atom.