The structure described by Rb6AgCuO4 crystallizes in the tetragonal P4_1 space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the fourth Rb site, Rb(4) is bonded in a distorted tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the fifth Rb site, Rb(5) is bonded in a 5-coordinate geometry to one Cu(1), one O(3), one O(4), and two equivalent O(1) atoms. In the sixth Rb site, Rb(6) is bonded in a 2-coordinate geometry to one O(3), one O(4), and two equivalent O(2) atoms. Ag(1) is bonded in a linear geometry to one O(2) and one O(3) atom. Cu(1) is bonded in a linear geometry to one Rb(5), one O(1), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(2), two equivalent Rb(5), and one Cu(1) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(6), and one Ag(1) atom. In the third O site, O(3) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), one Rb(5), one Rb(6), two equivalent Rb(2), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), one Rb(5), one Rb(6), two equivalent Rb(1), and one Cu(1) atom. is represented by the CIF file [CIF]
data_Rb6CuAgO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.145
_cell_length_b   9.145
_cell_length_c   14.386
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1203.084
_cell_formula_units_Z   4
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  0.034  0.062  0.748  1.0
  Rb  Rb1  1  0.966  0.938  0.248  1.0
  Rb  Rb2  1  0.062  0.966  0.498  1.0
  Rb  Rb3  1  0.938  0.034  0.998  1.0
  Rb  Rb4  1  0.440  0.464  0.751  1.0
  Rb  Rb5  1  0.560  0.536  0.251  1.0
  Rb  Rb6  1  0.464  0.560  0.501  1.0
  Rb  Rb7  1  0.536  0.440  0.001  1.0
  Rb  Rb8  1  0.447  0.055  0.750  1.0
  Rb  Rb9  1  0.553  0.945  0.250  1.0
  Rb  Rb10  1  0.055  0.553  0.500  1.0
  Rb  Rb11  1  0.945  0.447  1.000  1.0
  Rb  Rb12  1  0.026  0.472  0.750  1.0
  Rb  Rb13  1  0.974  0.528  0.250  1.0
  Rb  Rb14  1  0.472  0.974  0.500  1.0
  Rb  Rb15  1  0.528  0.026  1.000  1.0
  Rb  Rb16  1  0.342  0.264  0.359  1.0
  Rb  Rb17  1  0.658  0.736  0.859  1.0
  Rb  Rb18  1  0.264  0.658  0.109  1.0
  Rb  Rb19  1  0.736  0.342  0.609  1.0
  Rb  Rb20  1  0.236  0.154  0.141  1.0
  Rb  Rb21  1  0.764  0.846  0.641  1.0
  Rb  Rb22  1  0.154  0.764  0.891  1.0
  Rb  Rb23  1  0.846  0.236  0.391  1.0
  Cu  Cu24  1  0.763  0.739  0.084  1.0
  Cu  Cu25  1  0.237  0.261  0.584  1.0
  Cu  Cu26  1  0.739  0.237  0.834  1.0
  Cu  Cu27  1  0.261  0.763  0.334  1.0
  Ag  Ag28  1  0.761  0.737  0.415  1.0
  Ag  Ag29  1  0.239  0.263  0.915  1.0
  Ag  Ag30  1  0.737  0.239  0.165  1.0
  Ag  Ag31  1  0.263  0.761  0.665  1.0
  O  O32  1  0.736  0.436  0.831  1.0
  O  O33  1  0.264  0.564  0.331  1.0
  O  O34  1  0.436  0.264  0.581  1.0
  O  O35  1  0.564  0.736  0.081  1.0
  O  O36  1  0.040  0.763  0.669  1.0
  O  O37  1  0.960  0.237  0.169  1.0
  O  O38  1  0.763  0.960  0.419  1.0
  O  O39  1  0.237  0.040  0.919  1.0
  O  O40  1  0.486  0.760  0.667  1.0
  O  O41  1  0.514  0.240  0.167  1.0
  O  O42  1  0.760  0.514  0.417  1.0
  O  O43  1  0.240  0.486  0.917  1.0
  O  O44  1  0.738  0.037  0.834  1.0
  O  O45  1  0.262  0.963  0.334  1.0
  O  O46  1  0.037  0.262  0.584  1.0
  O  O47  1  0.963  0.738  0.084  1.0
[/CIF]
.
The structure described by Rb6AgCuO4 crystallizes in the tetragonal P4_1 space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the fourth Rb site, Rb(4) is bonded in a distorted tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the fifth Rb site, Rb(5) is bonded in a 5-coordinate geometry to one Cu(1), one O(3), one O(4), and two equivalent O(1) atoms. In the sixth Rb site, Rb(6) is bonded in a 2-coordinate geometry to one O(3), one O(4), and two equivalent O(2) atoms. Ag(1) is bonded in a linear geometry to one O(2) and one O(3) atom. Cu(1) is bonded in a linear geometry to one Rb(5), one O(1), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(2), two equivalent Rb(5), and one Cu(1) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(6), and one Ag(1) atom. In the third O site, O(3) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), one Rb(5), one Rb(6), two equivalent Rb(2), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), one Rb(5), one Rb(6), two equivalent Rb(1), and one Cu(1) atom. is represented by the CIF file [CIF]
data_Rb6CuAgO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.145
_cell_length_b   9.145
_cell_length_c   14.386
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1203.084
_cell_formula_units_Z   4
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  0.034  0.062  0.748  1.0
  Rb  Rb1  1  0.966  0.938  0.248  1.0
  Rb  Rb2  1  0.062  0.966  0.498  1.0
  Rb  Rb3  1  0.938  0.034  0.998  1.0
  Rb  Rb4  1  0.440  0.464  0.751  1.0
  Rb  Rb5  1  0.560  0.536  0.251  1.0
  Rb  Rb6  1  0.464  0.560  0.501  1.0
  Rb  Rb7  1  0.536  0.440  0.001  1.0
  Rb  Rb8  1  0.447  0.055  0.750  1.0
  Rb  Rb9  1  0.553  0.945  0.250  1.0
  Rb  Rb10  1  0.055  0.553  0.500  1.0
  Rb  Rb11  1  0.945  0.447  1.000  1.0
  Rb  Rb12  1  0.026  0.472  0.750  1.0
  Rb  Rb13  1  0.974  0.528  0.250  1.0
  Rb  Rb14  1  0.472  0.974  0.500  1.0
  Rb  Rb15  1  0.528  0.026  1.000  1.0
  Rb  Rb16  1  0.342  0.264  0.359  1.0
  Rb  Rb17  1  0.658  0.736  0.859  1.0
  Rb  Rb18  1  0.264  0.658  0.109  1.0
  Rb  Rb19  1  0.736  0.342  0.609  1.0
  Rb  Rb20  1  0.236  0.154  0.141  1.0
  Rb  Rb21  1  0.764  0.846  0.641  1.0
  Rb  Rb22  1  0.154  0.764  0.891  1.0
  Rb  Rb23  1  0.846  0.236  0.391  1.0
  Cu  Cu24  1  0.763  0.739  0.084  1.0
  Cu  Cu25  1  0.237  0.261  0.584  1.0
  Cu  Cu26  1  0.739  0.237  0.834  1.0
  Cu  Cu27  1  0.261  0.763  0.334  1.0
  Ag  Ag28  1  0.761  0.737  0.415  1.0
  Ag  Ag29  1  0.239  0.263  0.915  1.0
  Ag  Ag30  1  0.737  0.239  0.165  1.0
  Ag  Ag31  1  0.263  0.761  0.665  1.0
  O  O32  1  0.736  0.436  0.831  1.0
  O  O33  1  0.264  0.564  0.331  1.0
  O  O34  1  0.436  0.264  0.581  1.0
  O  O35  1  0.564  0.736  0.081  1.0
  O  O36  1  0.040  0.763  0.669  1.0
  O  O37  1  0.960  0.237  0.169  1.0
  O  O38  1  0.763  0.960  0.419  1.0
  O  O39  1  0.237  0.040  0.919  1.0
  O  O40  1  0.486  0.760  0.667  1.0
  O  O41  1  0.514  0.240  0.167  1.0
  O  O42  1  0.760  0.514  0.417  1.0
  O  O43  1  0.240  0.486  0.917  1.0
  O  O44  1  0.738  0.037  0.834  1.0
  O  O45  1  0.262  0.963  0.334  1.0
  O  O46  1  0.037  0.262  0.584  1.0
  O  O47  1  0.963  0.738  0.084  1.0
[/CIF]
.