The material structure described by Rb2Cu4H5(SO5)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted RbO8 hexagonal bipyramids that share corners with four equivalent S(2)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent S(1)O4 tetrahedra. In the second Rb site, Rb(2) is bonded to two equivalent O(10), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form distorted RbO8 hexagonal bipyramids that share corners with four equivalent S(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent S(2)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, corners with two equivalent S(2)O4 tetrahedra,  an edgeedge with one Rb(1)O8 hexagonal bipyramid,  an edgeedge with one Rb(2)O8 hexagonal bipyramid, and edges with two equivalent Cu(2)O6 octahedra. In the second Cu site, Cu(2) is bonded to one O(10), one O(2), one O(3), one O(5), one O(6), and one O(9) atom to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, corners with two equivalent S(2)O4 tetrahedra,  an edgeedge with one Rb(1)O8 hexagonal bipyramid,  an edgeedge with one Rb(2)O8 hexagonal bipyramid, and edges with two equivalent Cu(1)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(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. In the third H site, H(3) is bonded in a linear geometry to two equivalent O(6) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(10), one O(3), one O(4), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Rb(2)O8 hexagonal bipyramids, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and  an edgeedge with one Rb(1)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-50°. In the second S site, S(2) is bonded to one O(1), one O(2), one O(7), and one O(9) atom to form SO4 tetrahedra that share corners with two equivalent Rb(1)O8 hexagonal bipyramids, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and  an edgeedge with one Rb(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-48°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(1), and one S(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(2), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), one Cu(1), one Cu(2), and one S(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Rb(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one H(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one H(2), and one H(3) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one Rb(2) and one S(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(1), and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Rb(2), one Cu(1), one Cu(2), and one S(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(2), and one S(1) atom. is represented by the CIF card [CIF]
data_Rb2Cu4H5(SO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.425
_cell_length_b   6.506
_cell_length_c   7.990
_cell_angle_alpha   88.644
_cell_angle_beta   65.320
_cell_angle_gamma   54.597
_symmetry_Int_Tables_number   1
_cell_volume   420.345
_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  0.000  0.500  0.500  1.0
  Rb  Rb1  1  0.500  0.500  0.500  1.0
  Cu  Cu2  1  0.255  0.996  0.999  1.0
  Cu  Cu3  1  0.251  0.496  0.997  1.0
  Cu  Cu4  1  0.745  0.004  0.001  1.0
  Cu  Cu5  1  0.749  0.504  0.003  1.0
  H  H6  1  0.199  0.301  0.813  1.0
  H  H7  1  0.294  0.702  0.203  1.0
  H  H8  1  0.500  0.500  0.000  1.0
  H  H9  1  0.706  0.298  0.797  1.0
  H  H10  1  0.801  0.699  0.187  1.0
  S  S11  1  0.425  0.072  0.285  1.0
  S  S12  1  0.071  0.930  0.719  1.0
  S  S13  1  0.929  0.070  0.281  1.0
  S  S14  1  0.575  0.928  0.715  1.0
  O  O15  1  0.038  0.151  0.223  1.0
  O  O16  1  0.037  0.772  0.224  1.0
  O  O17  1  0.327  0.174  0.186  1.0
  O  O18  1  0.321  0.174  0.495  1.0
  O  O19  1  0.168  0.329  0.951  1.0
  O  O20  1  0.349  0.650  0.061  1.0
  O  O21  1  0.176  0.828  0.509  1.0
  O  O22  1  0.532  0.159  0.228  1.0
  O  O23  1  0.171  0.826  0.816  1.0
  O  O24  1  0.467  0.226  0.772  1.0
  O  O25  1  0.533  0.774  0.228  1.0
  O  O26  1  0.829  0.174  0.184  1.0
  O  O27  1  0.468  0.841  0.772  1.0
  O  O28  1  0.824  0.172  0.491  1.0
  O  O29  1  0.651  0.350  0.939  1.0
  O  O30  1  0.832  0.671  0.049  1.0
  O  O31  1  0.679  0.826  0.505  1.0
  O  O32  1  0.673  0.826  0.814  1.0
  O  O33  1  0.963  0.228  0.776  1.0
  O  O34  1  0.962  0.849  0.777  1.0
[/CIF]
.
The material structure described by Rb2Cu4H5(SO5)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted RbO8 hexagonal bipyramids that share corners with four equivalent S(2)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent S(1)O4 tetrahedra. In the second Rb site, Rb(2) is bonded to two equivalent O(10), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form distorted RbO8 hexagonal bipyramids that share corners with four equivalent S(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent S(2)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(8), and one O(9) atom to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, corners with two equivalent S(2)O4 tetrahedra,  an edgeedge with one Rb(1)O8 hexagonal bipyramid,  an edgeedge with one Rb(2)O8 hexagonal bipyramid, and edges with two equivalent Cu(2)O6 octahedra. In the second Cu site, Cu(2) is bonded to one O(10), one O(2), one O(3), one O(5), one O(6), and one O(9) atom to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, corners with two equivalent S(2)O4 tetrahedra,  an edgeedge with one Rb(1)O8 hexagonal bipyramid,  an edgeedge with one Rb(2)O8 hexagonal bipyramid, and edges with two equivalent Cu(1)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(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. In the third H site, H(3) is bonded in a linear geometry to two equivalent O(6) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(10), one O(3), one O(4), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Rb(2)O8 hexagonal bipyramids, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and  an edgeedge with one Rb(1)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-50°. In the second S site, S(2) is bonded to one O(1), one O(2), one O(7), and one O(9) atom to form SO4 tetrahedra that share corners with two equivalent Rb(1)O8 hexagonal bipyramids, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and  an edgeedge with one Rb(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-48°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(1), and one S(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(2), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), one Cu(1), one Cu(2), and one S(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Rb(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one H(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one H(2), and one H(3) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one Rb(2) and one S(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(1), and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Rb(2), one Cu(1), one Cu(2), and one S(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(2), and one S(1) atom. is represented by the CIF card [CIF]
data_Rb2Cu4H5(SO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.425
_cell_length_b   6.506
_cell_length_c   7.990
_cell_angle_alpha   88.644
_cell_angle_beta   65.320
_cell_angle_gamma   54.597
_symmetry_Int_Tables_number   1
_cell_volume   420.345
_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  0.000  0.500  0.500  1.0
  Rb  Rb1  1  0.500  0.500  0.500  1.0
  Cu  Cu2  1  0.255  0.996  0.999  1.0
  Cu  Cu3  1  0.251  0.496  0.997  1.0
  Cu  Cu4  1  0.745  0.004  0.001  1.0
  Cu  Cu5  1  0.749  0.504  0.003  1.0
  H  H6  1  0.199  0.301  0.813  1.0
  H  H7  1  0.294  0.702  0.203  1.0
  H  H8  1  0.500  0.500  0.000  1.0
  H  H9  1  0.706  0.298  0.797  1.0
  H  H10  1  0.801  0.699  0.187  1.0
  S  S11  1  0.425  0.072  0.285  1.0
  S  S12  1  0.071  0.930  0.719  1.0
  S  S13  1  0.929  0.070  0.281  1.0
  S  S14  1  0.575  0.928  0.715  1.0
  O  O15  1  0.038  0.151  0.223  1.0
  O  O16  1  0.037  0.772  0.224  1.0
  O  O17  1  0.327  0.174  0.186  1.0
  O  O18  1  0.321  0.174  0.495  1.0
  O  O19  1  0.168  0.329  0.951  1.0
  O  O20  1  0.349  0.650  0.061  1.0
  O  O21  1  0.176  0.828  0.509  1.0
  O  O22  1  0.532  0.159  0.228  1.0
  O  O23  1  0.171  0.826  0.816  1.0
  O  O24  1  0.467  0.226  0.772  1.0
  O  O25  1  0.533  0.774  0.228  1.0
  O  O26  1  0.829  0.174  0.184  1.0
  O  O27  1  0.468  0.841  0.772  1.0
  O  O28  1  0.824  0.172  0.491  1.0
  O  O29  1  0.651  0.350  0.939  1.0
  O  O30  1  0.832  0.671  0.049  1.0
  O  O31  1  0.679  0.826  0.505  1.0
  O  O32  1  0.673  0.826  0.814  1.0
  O  O33  1  0.963  0.228  0.776  1.0
  O  O34  1  0.962  0.849  0.777  1.0
[/CIF]
.