The structure described by Rb2V6Cu9CdO26 crystallizes in the monoclinic Pm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(13), one O(17), two equivalent O(10), two equivalent O(14), two equivalent O(19), and two equivalent O(20) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(14), one O(18), two equivalent O(13), two equivalent O(19), two equivalent O(20), and two equivalent O(9) atoms. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(15), and two equivalent O(9) atoms to form VO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 51°. In the second V site, V(2) is bonded to one O(14), one O(16), and two equivalent O(10) atoms to form VO4 tetrahedra that share  a cornercorner with one Cu(7)O6 octahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 41°. In the third V site, V(3) is bonded to one O(17), one O(3), and two equivalent O(11) atoms to form VO4 tetrahedra that share corners with two equivalent Cu(7)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 35°. In the fourth V site, V(4) is bonded to one O(18), one O(4), and two equivalent O(12) atoms to form VO4 tetrahedra that share corners with two equivalent Cd(1)O6 octahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 33°. In the fifth V site, V(5) is bonded to one O(5), one O(7), and two equivalent O(19) atoms to form VO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra and corners with two equivalent Cu(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-76°. In the sixth V site, V(6) is bonded to one O(6), one O(8), and two equivalent O(20) atoms to form VO4 tetrahedra that share  a cornercorner with one Cu(7)O6 octahedra and corners with two equivalent Cd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-71°. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(15), one O(17), and two equivalent O(10) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. In the second Cu site, Cu(2) is bonded to one O(16), one O(18), one O(2), and two equivalent O(9) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. In the third Cu site, Cu(3) is bonded to one O(1), one O(15), one O(3), and two equivalent O(12) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra,  an edgeedge with one Cd(1)O6 octahedra, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the fourth Cu site, Cu(4) is bonded to one O(16), one O(2), one O(4), and two equivalent O(11) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra,  an edgeedge with one Cu(7)O6 octahedra, and  an edgeedge with one Cu(2)O5 trigonal bipyramid. In the fifth Cu site, Cu(5) is bonded in a 5-coordinate geometry to one O(12), one O(2), one O(6), one O(7), and one O(9) atom. In the sixth Cu site, Cu(6) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(8) atom. In the seventh Cu site, Cu(7) is bonded to one O(14), one O(8), two equivalent O(11), and two equivalent O(19) atoms to form distorted CuO6 octahedra that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(6)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent V(5)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. Cd(1) is bonded to one O(13), one O(7), two equivalent O(12), and two equivalent O(20) atoms to form CdO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(5)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, corners with two equivalent V(6)O4 tetrahedra, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(3), and two equivalent Cu(6) atoms to form distorted corner-sharing OCu4 trigonal pyramids. In the second O site, O(2) is bonded to one Cu(2), one Cu(4), and two equivalent Cu(5) atoms to form distorted corner-sharing OCu4 trigonal pyramids. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one V(3) and one Cu(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one V(4), one Cu(4), and two equivalent Cu(6) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(5) and two equivalent Cu(6) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(6) and two equivalent Cu(5) atoms. In the seventh O site, O(7) is bonded to one V(5), two equivalent Cu(5), and one Cd(1) atom to form distorted corner-sharing OVCdCu2 trigonal pyramids. In the eighth O site, O(8) is bonded to one V(6), one Cu(7), and two equivalent Cu(6) atoms to form corner-sharing OVCu3 tetrahedra. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Rb(2), one V(1), one Cu(2), and one Cu(5) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1), one V(2), one Cu(1), and one Cu(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one V(3), one Cu(4), one Cu(6), and one Cu(7) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one V(4), one Cu(3), one Cu(5), and one Cd(1) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(1), two equivalent Rb(2), one V(1), and one Cd(1) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Rb(2), two equivalent Rb(1), one V(2), and one Cu(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one Cu(3) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one V(2), one Cu(2), and one Cu(4) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Rb(1), one V(3), and one Cu(1) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Rb(2), one V(4), and one Cu(2) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one V(5), and one Cu(7) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one V(6), and one Cd(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2V6CdCu9O26
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.252
_cell_length_b   8.379
_cell_length_c   10.993
_cell_angle_alpha   97.669
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   570.696
_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  0.250  0.989  0.608  1.0
  Rb  Rb1  1  0.750  0.017  0.396  1.0
  V  V2  1  0.250  0.036  0.204  1.0
  V  V3  1  0.750  0.971  0.791  1.0
  V  V4  1  0.250  0.321  0.882  1.0
  V  V5  1  0.750  0.678  0.117  1.0
  V  V6  1  0.250  0.370  0.503  1.0
  V  V7  1  0.750  0.622  0.502  1.0
  Cd  Cd8  1  0.250  0.695  0.360  1.0
  Cu  Cu9  1  0.250  0.895  0.895  1.0
  Cu  Cu10  1  0.750  0.104  0.102  1.0
  Cu  Cu11  1  0.250  0.643  0.058  1.0
  Cu  Cu12  1  0.750  0.355  0.937  1.0
  Cu  Cu13  1  0.504  0.393  0.226  1.0
  Cu  Cu14  1  0.999  0.604  0.774  1.0
  Cu  Cu15  1  0.501  0.604  0.774  1.0
  Cu  Cu16  1  0.996  0.393  0.226  1.0
  Cu  Cu17  1  0.750  0.302  0.635  1.0
  O  O18  1  0.250  0.657  0.877  1.0
  O  O19  1  0.750  0.343  0.117  1.0
  O  O20  1  0.250  0.412  0.034  1.0
  O  O21  1  0.750  0.587  0.965  1.0
  O  O22  1  0.250  0.536  0.610  1.0
  O  O23  1  0.750  0.468  0.385  1.0
  O  O24  1  0.250  0.423  0.336  1.0
  O  O25  1  0.750  0.544  0.663  1.0
  O  O26  1  0.480  0.158  0.209  1.0
  O  O27  1  0.975  0.841  0.786  1.0
  O  O28  1  0.525  0.841  0.786  1.0
  O  O29  1  0.020  0.158  0.209  1.0
  O  O30  1  0.491  0.378  0.809  1.0
  O  O31  1  0.991  0.623  0.192  1.0
  O  O32  1  0.509  0.623  0.192  1.0
  O  O33  1  0.009  0.378  0.809  1.0
  O  O34  1  0.250  0.951  0.337  1.0
  O  O35  1  0.750  0.077  0.667  1.0
  O  O36  1  0.250  0.880  0.078  1.0
  O  O37  1  0.750  0.120  0.922  1.0
  O  O38  1  0.250  0.117  0.883  1.0
  O  O39  1  0.750  0.881  0.116  1.0
  O  O40  1  0.476  0.262  0.529  1.0
  O  O41  1  0.967  0.743  0.485  1.0
  O  O42  1  0.533  0.743  0.485  1.0
  O  O43  1  0.024  0.262  0.529  1.0
[/CIF]
.
The structure described by Rb2V6Cu9CdO26 crystallizes in the monoclinic Pm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(13), one O(17), two equivalent O(10), two equivalent O(14), two equivalent O(19), and two equivalent O(20) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(14), one O(18), two equivalent O(13), two equivalent O(19), two equivalent O(20), and two equivalent O(9) atoms. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(15), and two equivalent O(9) atoms to form VO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 51°. In the second V site, V(2) is bonded to one O(14), one O(16), and two equivalent O(10) atoms to form VO4 tetrahedra that share  a cornercorner with one Cu(7)O6 octahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 41°. In the third V site, V(3) is bonded to one O(17), one O(3), and two equivalent O(11) atoms to form VO4 tetrahedra that share corners with two equivalent Cu(7)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 35°. In the fourth V site, V(4) is bonded to one O(18), one O(4), and two equivalent O(12) atoms to form VO4 tetrahedra that share corners with two equivalent Cd(1)O6 octahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 33°. In the fifth V site, V(5) is bonded to one O(5), one O(7), and two equivalent O(19) atoms to form VO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra and corners with two equivalent Cu(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-76°. In the sixth V site, V(6) is bonded to one O(6), one O(8), and two equivalent O(20) atoms to form VO4 tetrahedra that share  a cornercorner with one Cu(7)O6 octahedra and corners with two equivalent Cd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-71°. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(15), one O(17), and two equivalent O(10) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. In the second Cu site, Cu(2) is bonded to one O(16), one O(18), one O(2), and two equivalent O(9) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. In the third Cu site, Cu(3) is bonded to one O(1), one O(15), one O(3), and two equivalent O(12) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra,  an edgeedge with one Cd(1)O6 octahedra, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the fourth Cu site, Cu(4) is bonded to one O(16), one O(2), one O(4), and two equivalent O(11) atoms to form CuO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra,  an edgeedge with one Cu(7)O6 octahedra, and  an edgeedge with one Cu(2)O5 trigonal bipyramid. In the fifth Cu site, Cu(5) is bonded in a 5-coordinate geometry to one O(12), one O(2), one O(6), one O(7), and one O(9) atom. In the sixth Cu site, Cu(6) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(8) atom. In the seventh Cu site, Cu(7) is bonded to one O(14), one O(8), two equivalent O(11), and two equivalent O(19) atoms to form distorted CuO6 octahedra that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(6)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent V(5)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. Cd(1) is bonded to one O(13), one O(7), two equivalent O(12), and two equivalent O(20) atoms to form CdO6 octahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(5)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, corners with two equivalent V(6)O4 tetrahedra, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(3), and two equivalent Cu(6) atoms to form distorted corner-sharing OCu4 trigonal pyramids. In the second O site, O(2) is bonded to one Cu(2), one Cu(4), and two equivalent Cu(5) atoms to form distorted corner-sharing OCu4 trigonal pyramids. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one V(3) and one Cu(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one V(4), one Cu(4), and two equivalent Cu(6) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(5) and two equivalent Cu(6) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(6) and two equivalent Cu(5) atoms. In the seventh O site, O(7) is bonded to one V(5), two equivalent Cu(5), and one Cd(1) atom to form distorted corner-sharing OVCdCu2 trigonal pyramids. In the eighth O site, O(8) is bonded to one V(6), one Cu(7), and two equivalent Cu(6) atoms to form corner-sharing OVCu3 tetrahedra. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Rb(2), one V(1), one Cu(2), and one Cu(5) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1), one V(2), one Cu(1), and one Cu(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one V(3), one Cu(4), one Cu(6), and one Cu(7) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one V(4), one Cu(3), one Cu(5), and one Cd(1) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(1), two equivalent Rb(2), one V(1), and one Cd(1) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Rb(2), two equivalent Rb(1), one V(2), and one Cu(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one Cu(3) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one V(2), one Cu(2), and one Cu(4) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Rb(1), one V(3), and one Cu(1) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Rb(2), one V(4), and one Cu(2) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one V(5), and one Cu(7) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one V(6), and one Cd(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2V6CdCu9O26
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.252
_cell_length_b   8.379
_cell_length_c   10.993
_cell_angle_alpha   97.669
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   570.696
_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  0.250  0.989  0.608  1.0
  Rb  Rb1  1  0.750  0.017  0.396  1.0
  V  V2  1  0.250  0.036  0.204  1.0
  V  V3  1  0.750  0.971  0.791  1.0
  V  V4  1  0.250  0.321  0.882  1.0
  V  V5  1  0.750  0.678  0.117  1.0
  V  V6  1  0.250  0.370  0.503  1.0
  V  V7  1  0.750  0.622  0.502  1.0
  Cd  Cd8  1  0.250  0.695  0.360  1.0
  Cu  Cu9  1  0.250  0.895  0.895  1.0
  Cu  Cu10  1  0.750  0.104  0.102  1.0
  Cu  Cu11  1  0.250  0.643  0.058  1.0
  Cu  Cu12  1  0.750  0.355  0.937  1.0
  Cu  Cu13  1  0.504  0.393  0.226  1.0
  Cu  Cu14  1  0.999  0.604  0.774  1.0
  Cu  Cu15  1  0.501  0.604  0.774  1.0
  Cu  Cu16  1  0.996  0.393  0.226  1.0
  Cu  Cu17  1  0.750  0.302  0.635  1.0
  O  O18  1  0.250  0.657  0.877  1.0
  O  O19  1  0.750  0.343  0.117  1.0
  O  O20  1  0.250  0.412  0.034  1.0
  O  O21  1  0.750  0.587  0.965  1.0
  O  O22  1  0.250  0.536  0.610  1.0
  O  O23  1  0.750  0.468  0.385  1.0
  O  O24  1  0.250  0.423  0.336  1.0
  O  O25  1  0.750  0.544  0.663  1.0
  O  O26  1  0.480  0.158  0.209  1.0
  O  O27  1  0.975  0.841  0.786  1.0
  O  O28  1  0.525  0.841  0.786  1.0
  O  O29  1  0.020  0.158  0.209  1.0
  O  O30  1  0.491  0.378  0.809  1.0
  O  O31  1  0.991  0.623  0.192  1.0
  O  O32  1  0.509  0.623  0.192  1.0
  O  O33  1  0.009  0.378  0.809  1.0
  O  O34  1  0.250  0.951  0.337  1.0
  O  O35  1  0.750  0.077  0.667  1.0
  O  O36  1  0.250  0.880  0.078  1.0
  O  O37  1  0.750  0.120  0.922  1.0
  O  O38  1  0.250  0.117  0.883  1.0
  O  O39  1  0.750  0.881  0.116  1.0
  O  O40  1  0.476  0.262  0.529  1.0
  O  O41  1  0.967  0.743  0.485  1.0
  O  O42  1  0.533  0.743  0.485  1.0
  O  O43  1  0.024  0.262  0.529  1.0
[/CIF]
.