The structure described by RbAs4(HO4)3 crystallizes in the triclinic P1 space group. Rb(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), one O(8), two equivalent O(11), and two equivalent O(12) atoms. There are four inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form corner-sharing AsO4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-65°. In the second As site, As(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form corner-sharing AsO4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-62°. In the third As site, As(3) is bonded to one O(11), one O(4), one O(5), one O(7), one O(8), and one O(9) atom to form AsO6 octahedra that share  a cornercorner with one As(2)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra, and  an edgeedge with one As(4)O6 octahedra. In the fourth As site, As(4) is bonded to one O(10), one O(12), one O(3), one O(6), one O(7), and one O(8) atom to form AsO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and  an edgeedge with one As(3)O6 octahedra. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(11) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(12) atom. In the third H site, H(3) is bonded in a linear geometry to one O(1) and one O(2) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(1), and one H(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(1), and one As(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(2), and one As(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one As(1) and one As(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one As(2) and one As(4) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Rb(1), one As(3), and one As(4) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Rb(1), one As(3), and one As(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one As(1) and one As(3) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one As(2) and one As(4) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to two equivalent Rb(1), one As(3), and one H(1) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to two equivalent Rb(1), one As(4), and one H(2) atom. is represented by the CIF file [CIF]
data_RbAs4(HO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.184
_cell_length_b   7.037
_cell_length_c   7.840
_cell_angle_alpha   62.983
_cell_angle_beta   80.239
_cell_angle_gamma   84.681
_symmetry_Int_Tables_number   1
_cell_volume   251.080
_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
  Rb  Rb0  1  0.002  0.995  0.001  1.0
  As  As1  1  0.843  0.682  0.681  1.0
  As  As2  1  0.151  0.329  0.310  1.0
  As  As3  1  0.400  0.879  0.432  1.0
  As  As4  1  0.596  0.128  0.565  1.0
  H  H5  1  0.491  0.651  0.296  1.0
  H  H6  1  0.505  0.350  0.705  1.0
  H  H7  1  0.980  0.496  0.982  1.0
  O  O8  1  0.892  0.461  0.886  1.0
  O  O9  1  0.096  0.541  0.108  1.0
  O  O10  1  0.773  0.890  0.738  1.0
  O  O11  1  0.225  0.113  0.262  1.0
  O  O12  1  0.580  0.628  0.606  1.0
  O  O13  1  0.418  0.372  0.392  1.0
  O  O14  1  0.310  0.964  0.621  1.0
  O  O15  1  0.690  0.035  0.379  1.0
  O  O16  1  0.109  0.710  0.510  1.0
  O  O17  1  0.890  0.289  0.491  1.0
  O  O18  1  0.500  0.806  0.243  1.0
  O  O19  1  0.496  0.195  0.757  1.0
[/CIF]
.
The structure described by RbAs4(HO4)3 crystallizes in the triclinic P1 space group. Rb(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), one O(8), two equivalent O(11), and two equivalent O(12) atoms. There are four inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form corner-sharing AsO4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-65°. In the second As site, As(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form corner-sharing AsO4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-62°. In the third As site, As(3) is bonded to one O(11), one O(4), one O(5), one O(7), one O(8), and one O(9) atom to form AsO6 octahedra that share  a cornercorner with one As(2)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra, and  an edgeedge with one As(4)O6 octahedra. In the fourth As site, As(4) is bonded to one O(10), one O(12), one O(3), one O(6), one O(7), and one O(8) atom to form AsO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and  an edgeedge with one As(3)O6 octahedra. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(11) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(12) atom. In the third H site, H(3) is bonded in a linear geometry to one O(1) and one O(2) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(1), and one H(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(1), and one As(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one As(2), and one As(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one As(1) and one As(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one As(2) and one As(4) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Rb(1), one As(3), and one As(4) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Rb(1), one As(3), and one As(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one As(1) and one As(3) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one As(2) and one As(4) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to two equivalent Rb(1), one As(3), and one H(1) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to two equivalent Rb(1), one As(4), and one H(2) atom. is represented by the CIF file [CIF]
data_RbAs4(HO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.184
_cell_length_b   7.037
_cell_length_c   7.840
_cell_angle_alpha   62.983
_cell_angle_beta   80.239
_cell_angle_gamma   84.681
_symmetry_Int_Tables_number   1
_cell_volume   251.080
_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
  Rb  Rb0  1  0.002  0.995  0.001  1.0
  As  As1  1  0.843  0.682  0.681  1.0
  As  As2  1  0.151  0.329  0.310  1.0
  As  As3  1  0.400  0.879  0.432  1.0
  As  As4  1  0.596  0.128  0.565  1.0
  H  H5  1  0.491  0.651  0.296  1.0
  H  H6  1  0.505  0.350  0.705  1.0
  H  H7  1  0.980  0.496  0.982  1.0
  O  O8  1  0.892  0.461  0.886  1.0
  O  O9  1  0.096  0.541  0.108  1.0
  O  O10  1  0.773  0.890  0.738  1.0
  O  O11  1  0.225  0.113  0.262  1.0
  O  O12  1  0.580  0.628  0.606  1.0
  O  O13  1  0.418  0.372  0.392  1.0
  O  O14  1  0.310  0.964  0.621  1.0
  O  O15  1  0.690  0.035  0.379  1.0
  O  O16  1  0.109  0.710  0.510  1.0
  O  O17  1  0.890  0.289  0.491  1.0
  O  O18  1  0.500  0.806  0.243  1.0
  O  O19  1  0.496  0.195  0.757  1.0
[/CIF]
.