The material described by Rb2CuH4(C2O5)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one H(3), one O(1), one O(2), one O(5), one O(7), one O(9), two equivalent O(10), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(2), one O(4), one O(5), and two equivalent O(6) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in an octahedral geometry to two equivalent O(5), two equivalent O(7), and two equivalent O(9) atoms. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(9) atom. In the third H site, H(3) is bonded in a single-bond geometry to one Rb(1) and one O(10) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(1), and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one C(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Cu(2), and one C(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Rb(2) and one C(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(2), and one C(4) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Rb(1), one Cu(2), one H(1), and one H(2) atom. In the tenth O site, O(10) is bonded in a water-like geometry to two equivalent Rb(1), one H(3), and one H(4) atom. is represented by the CIF file [CIF]
data_Rb2CuH4(C2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.049
_cell_length_b   9.008
_cell_length_c   9.059
_cell_angle_alpha   107.821
_cell_angle_beta   97.952
_cell_angle_gamma   97.922
_symmetry_Int_Tables_number   1
_cell_volume   532.324
_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
  Rb  Rb0  1  0.629  0.881  0.832  1.0
  Rb  Rb1  1  0.371  0.119  0.168  1.0
  Rb  Rb2  1  0.744  0.450  0.872  1.0
  Rb  Rb3  1  0.256  0.550  0.128  1.0
  Cu  Cu4  1  0.000  0.000  0.500  1.0
  Cu  Cu5  1  0.500  0.500  0.500  1.0
  H  H6  1  0.503  0.172  0.562  1.0
  H  H7  1  0.497  0.828  0.438  1.0
  H  H8  1  0.706  0.231  0.515  1.0
  H  H9  1  0.294  0.769  0.485  1.0
  H  H10  1  0.138  0.818  0.918  1.0
  H  H11  1  0.862  0.182  0.082  1.0
  H  H12  1  0.152  0.812  0.745  1.0
  H  H13  1  0.848  0.188  0.255  1.0
  C  C14  1  0.944  0.849  0.182  1.0
  C  C15  1  0.056  0.151  0.818  1.0
  C  C16  1  0.737  0.843  0.224  1.0
  C  C17  1  0.263  0.157  0.776  1.0
  C  C18  1  0.778  0.535  0.325  1.0
  C  C19  1  0.222  0.465  0.675  1.0
  C  C20  1  0.871  0.634  0.500  1.0
  C  C21  1  0.129  0.366  0.500  1.0
  O  O22  1  0.088  0.924  0.297  1.0
  O  O23  1  0.912  0.076  0.703  1.0
  O  O24  1  0.961  0.781  0.042  1.0
  O  O25  1  0.039  0.219  0.958  1.0
  O  O26  1  0.735  0.909  0.373  1.0
  O  O27  1  0.265  0.091  0.627  1.0
  O  O28  1  0.588  0.778  0.120  1.0
  O  O29  1  0.412  0.222  0.880  1.0
  O  O30  1  0.599  0.464  0.301  1.0
  O  O31  1  0.401  0.536  0.699  1.0
  O  O32  1  0.875  0.531  0.218  1.0
  O  O33  1  0.125  0.469  0.782  1.0
  O  O34  1  0.766  0.621  0.603  1.0
  O  O35  1  0.234  0.379  0.397  1.0
  O  O36  1  0.038  0.720  0.535  1.0
  O  O37  1  0.962  0.280  0.465  1.0
  O  O38  1  0.570  0.245  0.515  1.0
  O  O39  1  0.430  0.755  0.485  1.0
  O  O40  1  0.216  0.867  0.857  1.0
  O  O41  1  0.784  0.133  0.143  1.0
[/CIF]
.
The material described by Rb2CuH4(C2O5)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one H(3), one O(1), one O(2), one O(5), one O(7), one O(9), two equivalent O(10), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(2), one O(4), one O(5), and two equivalent O(6) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in an octahedral geometry to two equivalent O(5), two equivalent O(7), and two equivalent O(9) atoms. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(9) atom. In the third H site, H(3) is bonded in a single-bond geometry to one Rb(1) and one O(10) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(1), and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one C(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Cu(2), and one C(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Rb(2) and one C(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(2), and one C(4) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Rb(1), one Cu(2), one H(1), and one H(2) atom. In the tenth O site, O(10) is bonded in a water-like geometry to two equivalent Rb(1), one H(3), and one H(4) atom. is represented by the CIF file [CIF]
data_Rb2CuH4(C2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.049
_cell_length_b   9.008
_cell_length_c   9.059
_cell_angle_alpha   107.821
_cell_angle_beta   97.952
_cell_angle_gamma   97.922
_symmetry_Int_Tables_number   1
_cell_volume   532.324
_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
  Rb  Rb0  1  0.629  0.881  0.832  1.0
  Rb  Rb1  1  0.371  0.119  0.168  1.0
  Rb  Rb2  1  0.744  0.450  0.872  1.0
  Rb  Rb3  1  0.256  0.550  0.128  1.0
  Cu  Cu4  1  0.000  0.000  0.500  1.0
  Cu  Cu5  1  0.500  0.500  0.500  1.0
  H  H6  1  0.503  0.172  0.562  1.0
  H  H7  1  0.497  0.828  0.438  1.0
  H  H8  1  0.706  0.231  0.515  1.0
  H  H9  1  0.294  0.769  0.485  1.0
  H  H10  1  0.138  0.818  0.918  1.0
  H  H11  1  0.862  0.182  0.082  1.0
  H  H12  1  0.152  0.812  0.745  1.0
  H  H13  1  0.848  0.188  0.255  1.0
  C  C14  1  0.944  0.849  0.182  1.0
  C  C15  1  0.056  0.151  0.818  1.0
  C  C16  1  0.737  0.843  0.224  1.0
  C  C17  1  0.263  0.157  0.776  1.0
  C  C18  1  0.778  0.535  0.325  1.0
  C  C19  1  0.222  0.465  0.675  1.0
  C  C20  1  0.871  0.634  0.500  1.0
  C  C21  1  0.129  0.366  0.500  1.0
  O  O22  1  0.088  0.924  0.297  1.0
  O  O23  1  0.912  0.076  0.703  1.0
  O  O24  1  0.961  0.781  0.042  1.0
  O  O25  1  0.039  0.219  0.958  1.0
  O  O26  1  0.735  0.909  0.373  1.0
  O  O27  1  0.265  0.091  0.627  1.0
  O  O28  1  0.588  0.778  0.120  1.0
  O  O29  1  0.412  0.222  0.880  1.0
  O  O30  1  0.599  0.464  0.301  1.0
  O  O31  1  0.401  0.536  0.699  1.0
  O  O32  1  0.875  0.531  0.218  1.0
  O  O33  1  0.125  0.469  0.782  1.0
  O  O34  1  0.766  0.621  0.603  1.0
  O  O35  1  0.234  0.379  0.397  1.0
  O  O36  1  0.038  0.720  0.535  1.0
  O  O37  1  0.962  0.280  0.465  1.0
  O  O38  1  0.570  0.245  0.515  1.0
  O  O39  1  0.430  0.755  0.485  1.0
  O  O40  1  0.216  0.867  0.857  1.0
  O  O41  1  0.784  0.133  0.143  1.0
[/CIF]
.