The material described by RbAg4I5 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one I(19), one I(2), one I(4), one I(7), and one I(8) atom. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one I(13), one I(3), one I(4), one I(7), and one I(9) atom. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one I(12), one I(14), one I(17), one I(18), one I(8), and one I(9) atom. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one I(13), one I(14), one I(17), one I(19), one I(2), and one I(3) atom. There are sixteen inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one I(10), one I(2), one I(3), and one I(6) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one I(10), one I(2), one I(5), and one I(7) atom. In the third Ag site, Ag(3) is bonded in a trigonal planar geometry to one I(6), one I(8), and one I(9) atom. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one I(12), one I(13), one I(15), and one I(7) atom. In the fifth Ag site, Ag(5) is bonded in a 3-coordinate geometry to one I(11), one I(14), and one I(9) atom. In the sixth Ag site, Ag(6) is bonded in a 4-coordinate geometry to one I(10), one I(12), one I(15), and one I(17) atom. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one I(11), one I(16), one I(18), and one I(19) atom. In the eighth Ag site, Ag(8) is bonded to one I(11), one I(13), one I(15), and one I(19) atom to form distorted corner-sharing AgI4 tetrahedra. In the ninth Ag site, Ag(9) is bonded in a 4-coordinate geometry to one I(12), one I(16), one I(18), and one I(20) atom. In the tenth Ag site, Ag(10) is bonded in a 4-coordinate geometry to one I(1), one I(14), one I(16), and one I(19) atom. In the eleventh Ag site, Ag(11) is bonded to one I(15), one I(17), one I(2), and one I(20) atom to form distorted corner-sharing AgI4 tetrahedra. In the twelfth Ag site, Ag(12) is bonded in a 3-coordinate geometry to one I(16), one I(20), and one I(4) atom. In the thirteenth Ag site, Ag(13) is bonded in a 3-coordinate geometry to one I(1), one I(16), and one I(3) atom. In the fourteenth Ag site, Ag(14) is bonded in a distorted trigonal planar geometry to one I(18), one I(20), and one I(5) atom. In the fifteenth Ag site, Ag(15) is bonded in a 4-coordinate geometry to one I(1), one I(19), one I(4), and one I(6) atom. In the sixteenth Ag site, Ag(16) is bonded in a distorted trigonal planar geometry to one I(1), one I(17), and one I(5) atom. There are twenty inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to one Ag(10), one Ag(13), one Ag(15), and one Ag(16) atom. In the second I site, I(2) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(4), one Ag(1), one Ag(11), and one Ag(2) atom. In the third I site, I(3) is bonded to one Rb(2), one Rb(4), one Ag(1), and one Ag(13) atom to form distorted corner-sharing IRb2Ag2 trigonal pyramids. In the fourth I site, I(4) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Rb(2), one Ag(12), and one Ag(15) atom. In the fifth I site, I(5) is bonded in a distorted trigonal non-coplanar geometry to one Ag(14), one Ag(16), and one Ag(2) atom. In the sixth I site, I(6) is bonded in a distorted T-shaped geometry to one Ag(1), one Ag(15), and one Ag(3) atom. In the seventh I site, I(7) is bonded to one Rb(1), one Rb(2), one Ag(2), and one Ag(4) atom to form distorted corner-sharing IRb2Ag2 trigonal pyramids. In the eighth I site, I(8) is bonded in a 3-coordinate geometry to one Rb(1), one Rb(3), and one Ag(3) atom. In the ninth I site, I(9) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(3), one Ag(3), and one Ag(5) atom. In the tenth I site, I(10) is bonded in a distorted T-shaped geometry to one Ag(1), one Ag(2), and one Ag(6) atom. In the eleventh I site, I(11) is bonded in a distorted T-shaped geometry to one Ag(5), one Ag(7), and one Ag(8) atom. In the twelfth I site, I(12) is bonded in a 4-coordinate geometry to one Rb(3), one Ag(4), one Ag(6), and one Ag(9) atom. In the thirteenth I site, I(13) is bonded in a rectangular see-saw-like geometry to one Rb(2), one Rb(4), one Ag(4), and one Ag(8) atom. In the fourteenth I site, I(14) is bonded in a 4-coordinate geometry to one Rb(3), one Rb(4), one Ag(10), and one Ag(5) atom. In the fifteenth I site, I(15) is bonded in a 4-coordinate geometry to one Ag(11), one Ag(4), one Ag(6), and one Ag(8) atom. In the sixteenth I site, I(16) is bonded in a 5-coordinate geometry to one Ag(10), one Ag(12), one Ag(13), one Ag(7), and one Ag(9) atom. In the seventeenth I site, I(17) is bonded in a 5-coordinate geometry to one Rb(3), one Rb(4), one Ag(11), one Ag(16), and one Ag(6) atom. In the eighteenth I site, I(18) is bonded in a 4-coordinate geometry to one Rb(3), one Ag(14), one Ag(7), and one Ag(9) atom. In the nineteenth I site, I(19) is bonded in a 6-coordinate geometry to one Rb(1), one Rb(4), one Ag(10), one Ag(15), one Ag(7), and one Ag(8) atom. In the twentieth I site, I(20) is bonded in a 4-coordinate geometry to one Ag(11), one Ag(12), one Ag(14), and one Ag(9) atom. is represented by the CIF card [CIF]
data_RbAg4I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.759
_cell_length_b   11.803
_cell_length_c   11.812
_cell_angle_alpha   88.119
_cell_angle_beta   89.208
_cell_angle_gamma   89.224
_symmetry_Int_Tables_number   1
_cell_volume   1638.212
_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  0.868  0.810  0.376  1.0
  Rb  Rb1  1  0.404  0.619  0.677  1.0
  Rb  Rb2  1  0.134  0.405  0.118  1.0
  Rb  Rb3  1  0.635  0.111  0.884  1.0
  Ag  Ag4  1  0.613  0.728  0.971  1.0
  Ag  Ag5  1  0.529  0.693  0.204  1.0
  Ag  Ag6  1  0.947  0.635  0.930  1.0
  Ag  Ag7  1  0.557  0.422  0.447  1.0
  Ag  Ag8  1  0.950  0.440  0.757  1.0
  Ag  Ag9  1  0.463  0.326  0.238  1.0
  Ag  Ag10  1  0.999  0.216  0.532  1.0
  Ag  Ag11  1  0.744  0.277  0.533  1.0
  Ag  Ag12  1  0.262  0.209  0.446  1.0
  Ag  Ag13  1  0.980  0.167  0.792  1.0
  Ag  Ag14  1  0.548  0.076  0.247  1.0
  Ag  Ag15  1  0.239  0.995  0.578  1.0
  Ag  Ag16  1  0.227  0.981  0.828  1.0
  Ag  Ag17  1  0.297  0.000  0.316  1.0
  Ag  Ag18  1  0.999  0.874  0.743  1.0
  Ag  Ag19  1  0.246  0.963  0.073  1.0
  I  I20  1  0.029  0.959  0.963  1.0
  I  I21  1  0.670  0.903  0.137  1.0
  I  I22  1  0.438  0.880  0.829  1.0
  I  I23  1  0.128  0.794  0.564  1.0
  I  I24  1  0.292  0.785  0.225  1.0
  I  I25  1  0.781  0.735  0.792  1.0
  I  I26  1  0.600  0.658  0.430  1.0
  I  I27  1  0.918  0.611  0.162  1.0
  I  I28  1  0.150  0.543  0.840  1.0
  I  I29  1  0.500  0.524  0.044  1.0
  I  I30  1  0.926  0.444  0.524  1.0
  I  I31  1  0.307  0.434  0.386  1.0
  I  I32  1  0.567  0.347  0.683  1.0
  I  I33  1  0.868  0.308  0.942  1.0
  I  I34  1  0.693  0.271  0.291  1.0
  I  I35  1  0.207  0.202  0.701  1.0
  I  I36  1  0.373  0.170  0.077  1.0
  I  I37  1  0.075  0.118  0.322  1.0
  I  I38  1  0.835  0.055  0.629  1.0
  I  I39  1  0.462  0.049  0.479  1.0
[/CIF]
.
The material described by RbAg4I5 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one I(19), one I(2), one I(4), one I(7), and one I(8) atom. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one I(13), one I(3), one I(4), one I(7), and one I(9) atom. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one I(12), one I(14), one I(17), one I(18), one I(8), and one I(9) atom. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one I(13), one I(14), one I(17), one I(19), one I(2), and one I(3) atom. There are sixteen inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one I(10), one I(2), one I(3), and one I(6) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one I(10), one I(2), one I(5), and one I(7) atom. In the third Ag site, Ag(3) is bonded in a trigonal planar geometry to one I(6), one I(8), and one I(9) atom. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one I(12), one I(13), one I(15), and one I(7) atom. In the fifth Ag site, Ag(5) is bonded in a 3-coordinate geometry to one I(11), one I(14), and one I(9) atom. In the sixth Ag site, Ag(6) is bonded in a 4-coordinate geometry to one I(10), one I(12), one I(15), and one I(17) atom. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one I(11), one I(16), one I(18), and one I(19) atom. In the eighth Ag site, Ag(8) is bonded to one I(11), one I(13), one I(15), and one I(19) atom to form distorted corner-sharing AgI4 tetrahedra. In the ninth Ag site, Ag(9) is bonded in a 4-coordinate geometry to one I(12), one I(16), one I(18), and one I(20) atom. In the tenth Ag site, Ag(10) is bonded in a 4-coordinate geometry to one I(1), one I(14), one I(16), and one I(19) atom. In the eleventh Ag site, Ag(11) is bonded to one I(15), one I(17), one I(2), and one I(20) atom to form distorted corner-sharing AgI4 tetrahedra. In the twelfth Ag site, Ag(12) is bonded in a 3-coordinate geometry to one I(16), one I(20), and one I(4) atom. In the thirteenth Ag site, Ag(13) is bonded in a 3-coordinate geometry to one I(1), one I(16), and one I(3) atom. In the fourteenth Ag site, Ag(14) is bonded in a distorted trigonal planar geometry to one I(18), one I(20), and one I(5) atom. In the fifteenth Ag site, Ag(15) is bonded in a 4-coordinate geometry to one I(1), one I(19), one I(4), and one I(6) atom. In the sixteenth Ag site, Ag(16) is bonded in a distorted trigonal planar geometry to one I(1), one I(17), and one I(5) atom. There are twenty inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to one Ag(10), one Ag(13), one Ag(15), and one Ag(16) atom. In the second I site, I(2) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(4), one Ag(1), one Ag(11), and one Ag(2) atom. In the third I site, I(3) is bonded to one Rb(2), one Rb(4), one Ag(1), and one Ag(13) atom to form distorted corner-sharing IRb2Ag2 trigonal pyramids. In the fourth I site, I(4) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Rb(2), one Ag(12), and one Ag(15) atom. In the fifth I site, I(5) is bonded in a distorted trigonal non-coplanar geometry to one Ag(14), one Ag(16), and one Ag(2) atom. In the sixth I site, I(6) is bonded in a distorted T-shaped geometry to one Ag(1), one Ag(15), and one Ag(3) atom. In the seventh I site, I(7) is bonded to one Rb(1), one Rb(2), one Ag(2), and one Ag(4) atom to form distorted corner-sharing IRb2Ag2 trigonal pyramids. In the eighth I site, I(8) is bonded in a 3-coordinate geometry to one Rb(1), one Rb(3), and one Ag(3) atom. In the ninth I site, I(9) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(3), one Ag(3), and one Ag(5) atom. In the tenth I site, I(10) is bonded in a distorted T-shaped geometry to one Ag(1), one Ag(2), and one Ag(6) atom. In the eleventh I site, I(11) is bonded in a distorted T-shaped geometry to one Ag(5), one Ag(7), and one Ag(8) atom. In the twelfth I site, I(12) is bonded in a 4-coordinate geometry to one Rb(3), one Ag(4), one Ag(6), and one Ag(9) atom. In the thirteenth I site, I(13) is bonded in a rectangular see-saw-like geometry to one Rb(2), one Rb(4), one Ag(4), and one Ag(8) atom. In the fourteenth I site, I(14) is bonded in a 4-coordinate geometry to one Rb(3), one Rb(4), one Ag(10), and one Ag(5) atom. In the fifteenth I site, I(15) is bonded in a 4-coordinate geometry to one Ag(11), one Ag(4), one Ag(6), and one Ag(8) atom. In the sixteenth I site, I(16) is bonded in a 5-coordinate geometry to one Ag(10), one Ag(12), one Ag(13), one Ag(7), and one Ag(9) atom. In the seventeenth I site, I(17) is bonded in a 5-coordinate geometry to one Rb(3), one Rb(4), one Ag(11), one Ag(16), and one Ag(6) atom. In the eighteenth I site, I(18) is bonded in a 4-coordinate geometry to one Rb(3), one Ag(14), one Ag(7), and one Ag(9) atom. In the nineteenth I site, I(19) is bonded in a 6-coordinate geometry to one Rb(1), one Rb(4), one Ag(10), one Ag(15), one Ag(7), and one Ag(8) atom. In the twentieth I site, I(20) is bonded in a 4-coordinate geometry to one Ag(11), one Ag(12), one Ag(14), and one Ag(9) atom. is represented by the CIF card [CIF]
data_RbAg4I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.759
_cell_length_b   11.803
_cell_length_c   11.812
_cell_angle_alpha   88.119
_cell_angle_beta   89.208
_cell_angle_gamma   89.224
_symmetry_Int_Tables_number   1
_cell_volume   1638.212
_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  0.868  0.810  0.376  1.0
  Rb  Rb1  1  0.404  0.619  0.677  1.0
  Rb  Rb2  1  0.134  0.405  0.118  1.0
  Rb  Rb3  1  0.635  0.111  0.884  1.0
  Ag  Ag4  1  0.613  0.728  0.971  1.0
  Ag  Ag5  1  0.529  0.693  0.204  1.0
  Ag  Ag6  1  0.947  0.635  0.930  1.0
  Ag  Ag7  1  0.557  0.422  0.447  1.0
  Ag  Ag8  1  0.950  0.440  0.757  1.0
  Ag  Ag9  1  0.463  0.326  0.238  1.0
  Ag  Ag10  1  0.999  0.216  0.532  1.0
  Ag  Ag11  1  0.744  0.277  0.533  1.0
  Ag  Ag12  1  0.262  0.209  0.446  1.0
  Ag  Ag13  1  0.980  0.167  0.792  1.0
  Ag  Ag14  1  0.548  0.076  0.247  1.0
  Ag  Ag15  1  0.239  0.995  0.578  1.0
  Ag  Ag16  1  0.227  0.981  0.828  1.0
  Ag  Ag17  1  0.297  0.000  0.316  1.0
  Ag  Ag18  1  0.999  0.874  0.743  1.0
  Ag  Ag19  1  0.246  0.963  0.073  1.0
  I  I20  1  0.029  0.959  0.963  1.0
  I  I21  1  0.670  0.903  0.137  1.0
  I  I22  1  0.438  0.880  0.829  1.0
  I  I23  1  0.128  0.794  0.564  1.0
  I  I24  1  0.292  0.785  0.225  1.0
  I  I25  1  0.781  0.735  0.792  1.0
  I  I26  1  0.600  0.658  0.430  1.0
  I  I27  1  0.918  0.611  0.162  1.0
  I  I28  1  0.150  0.543  0.840  1.0
  I  I29  1  0.500  0.524  0.044  1.0
  I  I30  1  0.926  0.444  0.524  1.0
  I  I31  1  0.307  0.434  0.386  1.0
  I  I32  1  0.567  0.347  0.683  1.0
  I  I33  1  0.868  0.308  0.942  1.0
  I  I34  1  0.693  0.271  0.291  1.0
  I  I35  1  0.207  0.202  0.701  1.0
  I  I36  1  0.373  0.170  0.077  1.0
  I  I37  1  0.075  0.118  0.322  1.0
  I  I38  1  0.835  0.055  0.629  1.0
  I  I39  1  0.462  0.049  0.479  1.0
[/CIF]
.