The crystal structure described by RbSr2I5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), and two equivalent I(5) atoms. In the second Sr site, Sr(2) is bonded to one I(2), one I(3), one I(4), two equivalent I(1), and two equivalent I(5) atoms to form distorted edge-sharing SrI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Rb(1) and two equivalent Sr(2) atoms to form distorted IRb2Sr2 trigonal pyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with two equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(1)Rb2Sr2 trigonal pyramids, corners with four equivalent I(5)Sr4 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(3)Rb2Sr3 trigonal bipyramids, and  an edgeedge with one I(1)Rb2Sr2 trigonal pyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms. In the third I site, I(3) is bonded to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms to form IRb2Sr3 trigonal bipyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with four equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(1)Rb2Sr2 trigonal pyramids, corners with two equivalent I(5)Sr4 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(1)Rb2Sr2 trigonal pyramids, edges with two equivalent I(5)Sr4 trigonal pyramids, and  a faceface with one I(4)Rb2Sr3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms to form IRb2Sr3 square pyramids that share corners with four equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with four equivalent I(1)Rb2Sr2 trigonal pyramids, corners with four equivalent I(5)Sr4 trigonal pyramids, edges with two equivalent I(4)Rb2Sr3 square pyramids,  an edgeedge with one I(3)Rb2Sr3 trigonal bipyramid,  an edgeedge with one I(1)Rb2Sr2 trigonal pyramid,  an edgeedge with one I(5)Sr4 trigonal pyramid, and  a faceface with one I(3)Rb2Sr3 trigonal bipyramid. In the fifth I site, I(5) is bonded to two equivalent Sr(1) and two equivalent Sr(2) atoms to form distorted ISr4 trigonal pyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with two equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(5)Sr4 trigonal pyramids, corners with four equivalent I(1)Rb2Sr2 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(3)Rb2Sr3 trigonal bipyramids, and  an edgeedge with one I(5)Sr4 trigonal pyramid. is represented by the CIF file [CIF]
data_RbSr2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.152
_cell_length_b   10.132
_cell_length_c   14.495
_cell_angle_alpha   89.785
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1344.122
_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  0.455  0.494  0.830  1.0
  Rb  Rb1  1  0.545  0.506  0.170  1.0
  Rb  Rb2  1  0.955  0.506  0.670  1.0
  Rb  Rb3  1  0.045  0.494  0.330  1.0
  Sr  Sr4  1  0.477  0.997  0.820  1.0
  Sr  Sr5  1  0.523  0.003  0.180  1.0
  Sr  Sr6  1  0.977  0.003  0.680  1.0
  Sr  Sr7  1  0.023  0.997  0.320  1.0
  Sr  Sr8  1  0.427  0.752  0.506  1.0
  Sr  Sr9  1  0.573  0.248  0.494  1.0
  Sr  Sr10  1  0.927  0.248  0.994  1.0
  Sr  Sr11  1  0.073  0.752  0.006  1.0
  I  I12  1  0.329  0.461  0.585  1.0
  I  I13  1  0.671  0.539  0.415  1.0
  I  I14  1  0.829  0.539  0.915  1.0
  I  I15  1  0.171  0.461  0.085  1.0
  I  I16  1  0.666  0.782  0.682  1.0
  I  I17  1  0.334  0.218  0.318  1.0
  I  I18  1  0.166  0.218  0.818  1.0
  I  I19  1  0.834  0.782  0.182  1.0
  I  I20  1  0.192  0.771  0.783  1.0
  I  I21  1  0.808  0.229  0.217  1.0
  I  I22  1  0.692  0.229  0.717  1.0
  I  I23  1  0.308  0.771  0.283  1.0
  I  I24  1  0.044  0.784  0.503  1.0
  I  I25  1  0.956  0.216  0.497  1.0
  I  I26  1  0.544  0.216  0.997  1.0
  I  I27  1  0.456  0.784  0.003  1.0
  I  I28  1  0.840  0.958  0.901  1.0
  I  I29  1  0.160  0.042  0.099  1.0
  I  I30  1  0.340  0.042  0.599  1.0
  I  I31  1  0.660  0.958  0.401  1.0
[/CIF]
.
The crystal structure described by RbSr2I5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), and two equivalent I(5) atoms. In the second Sr site, Sr(2) is bonded to one I(2), one I(3), one I(4), two equivalent I(1), and two equivalent I(5) atoms to form distorted edge-sharing SrI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Rb(1) and two equivalent Sr(2) atoms to form distorted IRb2Sr2 trigonal pyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with two equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(1)Rb2Sr2 trigonal pyramids, corners with four equivalent I(5)Sr4 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(3)Rb2Sr3 trigonal bipyramids, and  an edgeedge with one I(1)Rb2Sr2 trigonal pyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms. In the third I site, I(3) is bonded to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms to form IRb2Sr3 trigonal bipyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with four equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(1)Rb2Sr2 trigonal pyramids, corners with two equivalent I(5)Sr4 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(1)Rb2Sr2 trigonal pyramids, edges with two equivalent I(5)Sr4 trigonal pyramids, and  a faceface with one I(4)Rb2Sr3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1), one Sr(2), and two equivalent Sr(1) atoms to form IRb2Sr3 square pyramids that share corners with four equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with four equivalent I(1)Rb2Sr2 trigonal pyramids, corners with four equivalent I(5)Sr4 trigonal pyramids, edges with two equivalent I(4)Rb2Sr3 square pyramids,  an edgeedge with one I(3)Rb2Sr3 trigonal bipyramid,  an edgeedge with one I(1)Rb2Sr2 trigonal pyramid,  an edgeedge with one I(5)Sr4 trigonal pyramid, and  a faceface with one I(3)Rb2Sr3 trigonal bipyramid. In the fifth I site, I(5) is bonded to two equivalent Sr(1) and two equivalent Sr(2) atoms to form distorted ISr4 trigonal pyramids that share corners with four equivalent I(4)Rb2Sr3 square pyramids, corners with two equivalent I(3)Rb2Sr3 trigonal bipyramids, corners with two equivalent I(5)Sr4 trigonal pyramids, corners with four equivalent I(1)Rb2Sr2 trigonal pyramids,  an edgeedge with one I(4)Rb2Sr3 square pyramid, edges with two equivalent I(3)Rb2Sr3 trigonal bipyramids, and  an edgeedge with one I(5)Sr4 trigonal pyramid. is represented by the CIF file [CIF]
data_RbSr2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.152
_cell_length_b   10.132
_cell_length_c   14.495
_cell_angle_alpha   89.785
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1344.122
_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  0.455  0.494  0.830  1.0
  Rb  Rb1  1  0.545  0.506  0.170  1.0
  Rb  Rb2  1  0.955  0.506  0.670  1.0
  Rb  Rb3  1  0.045  0.494  0.330  1.0
  Sr  Sr4  1  0.477  0.997  0.820  1.0
  Sr  Sr5  1  0.523  0.003  0.180  1.0
  Sr  Sr6  1  0.977  0.003  0.680  1.0
  Sr  Sr7  1  0.023  0.997  0.320  1.0
  Sr  Sr8  1  0.427  0.752  0.506  1.0
  Sr  Sr9  1  0.573  0.248  0.494  1.0
  Sr  Sr10  1  0.927  0.248  0.994  1.0
  Sr  Sr11  1  0.073  0.752  0.006  1.0
  I  I12  1  0.329  0.461  0.585  1.0
  I  I13  1  0.671  0.539  0.415  1.0
  I  I14  1  0.829  0.539  0.915  1.0
  I  I15  1  0.171  0.461  0.085  1.0
  I  I16  1  0.666  0.782  0.682  1.0
  I  I17  1  0.334  0.218  0.318  1.0
  I  I18  1  0.166  0.218  0.818  1.0
  I  I19  1  0.834  0.782  0.182  1.0
  I  I20  1  0.192  0.771  0.783  1.0
  I  I21  1  0.808  0.229  0.217  1.0
  I  I22  1  0.692  0.229  0.717  1.0
  I  I23  1  0.308  0.771  0.283  1.0
  I  I24  1  0.044  0.784  0.503  1.0
  I  I25  1  0.956  0.216  0.497  1.0
  I  I26  1  0.544  0.216  0.997  1.0
  I  I27  1  0.456  0.784  0.003  1.0
  I  I28  1  0.840  0.958  0.901  1.0
  I  I29  1  0.160  0.042  0.099  1.0
  I  I30  1  0.340  0.042  0.599  1.0
  I  I31  1  0.660  0.958  0.401  1.0
[/CIF]
.