The material described by KSm2I5 crystallizes in the monoclinic P2_1/c space group. K(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 Sm sites. In the first Sm site, Sm(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 Sm site, Sm(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 SmI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent K(1) and two equivalent Sm(2) atoms to form IK2Sm2 tetrahedra that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with four equivalent I(5)Sm4 tetrahedra, corners with two equivalent I(2)K2Sm3 trigonal bipyramids, corners with two equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid,  an edgeedge with one I(1)K2Sm2 tetrahedra, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and edges with two equivalent I(3)K2Sm3 trigonal bipyramids. In the second I site, I(2) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form distorted IK2Sm3 trigonal bipyramids that share corners with five equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(5)Sm4 tetrahedra,  a cornercorner with one I(3)K2Sm3 trigonal bipyramid, corners with four equivalent I(2)K2Sm3 trigonal bipyramids, edges with two equivalent I(4)K2Sm3 square pyramids, edges with two equivalent I(1)K2Sm2 tetrahedra, edges with two equivalent I(5)Sm4 tetrahedra, and edges with four equivalent I(3)K2Sm3 trigonal bipyramids. In the third I site, I(3) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form IK2Sm3 trigonal bipyramids that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(5)Sm4 tetrahedra,  a cornercorner with one I(2)K2Sm3 trigonal bipyramid, corners with four equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid, edges with two equivalent I(1)K2Sm2 tetrahedra, edges with two equivalent I(5)Sm4 tetrahedra, edges with four equivalent I(2)K2Sm3 trigonal bipyramids, and  a faceface with one I(4)K2Sm3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form distorted IK2Sm3 square pyramids that share corners with four equivalent I(1)K2Sm2 tetrahedra, corners with four equivalent I(5)Sm4 tetrahedra, corners with four equivalent I(3)K2Sm3 trigonal bipyramids, corners with five equivalent I(2)K2Sm3 trigonal bipyramids, edges with two equivalent I(4)K2Sm3 square pyramids,  an edgeedge with one I(1)K2Sm2 tetrahedra,  an edgeedge with one I(5)Sm4 tetrahedra,  an edgeedge with one I(3)K2Sm3 trigonal bipyramid, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and  a faceface with one I(3)K2Sm3 trigonal bipyramid. In the fifth I site, I(5) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form distorted ISm4 tetrahedra that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(5)Sm4 tetrahedra, corners with four equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(2)K2Sm3 trigonal bipyramids, corners with two equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid,  an edgeedge with one I(5)Sm4 tetrahedra, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and edges with two equivalent I(3)K2Sm3 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSm2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.689
_cell_length_b   9.693
_cell_length_c   14.203
_cell_angle_alpha   89.557
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1196.134
_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
  K  K0  1  0.458  0.504  0.825  1.0
  K  K1  1  0.542  0.496  0.175  1.0
  K  K2  1  0.958  0.496  0.675  1.0
  K  K3  1  0.042  0.504  0.325  1.0
  Sm  Sm4  1  0.445  0.992  0.827  1.0
  Sm  Sm5  1  0.555  0.008  0.173  1.0
  Sm  Sm6  1  0.945  0.008  0.673  1.0
  Sm  Sm7  1  0.055  0.992  0.327  1.0
  Sm  Sm8  1  0.413  0.767  0.497  1.0
  Sm  Sm9  1  0.587  0.233  0.503  1.0
  Sm  Sm10  1  0.913  0.233  0.003  1.0
  Sm  Sm11  1  0.087  0.767  0.997  1.0
  I  I12  1  0.337  0.466  0.585  1.0
  I  I13  1  0.663  0.534  0.415  1.0
  I  I14  1  0.837  0.534  0.915  1.0
  I  I15  1  0.163  0.466  0.085  1.0
  I  I16  1  0.653  0.788  0.678  1.0
  I  I17  1  0.347  0.212  0.322  1.0
  I  I18  1  0.153  0.212  0.822  1.0
  I  I19  1  0.847  0.788  0.178  1.0
  I  I20  1  0.182  0.769  0.782  1.0
  I  I21  1  0.818  0.231  0.218  1.0
  I  I22  1  0.682  0.231  0.718  1.0
  I  I23  1  0.318  0.769  0.282  1.0
  I  I24  1  0.038  0.783  0.506  1.0
  I  I25  1  0.962  0.217  0.494  1.0
  I  I26  1  0.538  0.217  0.994  1.0
  I  I27  1  0.462  0.783  0.006  1.0
  I  I28  1  0.834  0.955  0.894  1.0
  I  I29  1  0.166  0.045  0.106  1.0
  I  I30  1  0.334  0.045  0.606  1.0
  I  I31  1  0.666  0.955  0.394  1.0
[/CIF]
.
The material described by KSm2I5 crystallizes in the monoclinic P2_1/c space group. K(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 Sm sites. In the first Sm site, Sm(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 Sm site, Sm(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 SmI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent K(1) and two equivalent Sm(2) atoms to form IK2Sm2 tetrahedra that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with four equivalent I(5)Sm4 tetrahedra, corners with two equivalent I(2)K2Sm3 trigonal bipyramids, corners with two equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid,  an edgeedge with one I(1)K2Sm2 tetrahedra, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and edges with two equivalent I(3)K2Sm3 trigonal bipyramids. In the second I site, I(2) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form distorted IK2Sm3 trigonal bipyramids that share corners with five equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(5)Sm4 tetrahedra,  a cornercorner with one I(3)K2Sm3 trigonal bipyramid, corners with four equivalent I(2)K2Sm3 trigonal bipyramids, edges with two equivalent I(4)K2Sm3 square pyramids, edges with two equivalent I(1)K2Sm2 tetrahedra, edges with two equivalent I(5)Sm4 tetrahedra, and edges with four equivalent I(3)K2Sm3 trigonal bipyramids. In the third I site, I(3) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form IK2Sm3 trigonal bipyramids that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(5)Sm4 tetrahedra,  a cornercorner with one I(2)K2Sm3 trigonal bipyramid, corners with four equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid, edges with two equivalent I(1)K2Sm2 tetrahedra, edges with two equivalent I(5)Sm4 tetrahedra, edges with four equivalent I(2)K2Sm3 trigonal bipyramids, and  a faceface with one I(4)K2Sm3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent K(1), one Sm(2), and two equivalent Sm(1) atoms to form distorted IK2Sm3 square pyramids that share corners with four equivalent I(1)K2Sm2 tetrahedra, corners with four equivalent I(5)Sm4 tetrahedra, corners with four equivalent I(3)K2Sm3 trigonal bipyramids, corners with five equivalent I(2)K2Sm3 trigonal bipyramids, edges with two equivalent I(4)K2Sm3 square pyramids,  an edgeedge with one I(1)K2Sm2 tetrahedra,  an edgeedge with one I(5)Sm4 tetrahedra,  an edgeedge with one I(3)K2Sm3 trigonal bipyramid, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and  a faceface with one I(3)K2Sm3 trigonal bipyramid. In the fifth I site, I(5) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form distorted ISm4 tetrahedra that share corners with four equivalent I(4)K2Sm3 square pyramids, corners with two equivalent I(5)Sm4 tetrahedra, corners with four equivalent I(1)K2Sm2 tetrahedra, corners with two equivalent I(2)K2Sm3 trigonal bipyramids, corners with two equivalent I(3)K2Sm3 trigonal bipyramids,  an edgeedge with one I(4)K2Sm3 square pyramid,  an edgeedge with one I(5)Sm4 tetrahedra, edges with two equivalent I(2)K2Sm3 trigonal bipyramids, and edges with two equivalent I(3)K2Sm3 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_KSm2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.689
_cell_length_b   9.693
_cell_length_c   14.203
_cell_angle_alpha   89.557
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1196.134
_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
  K  K0  1  0.458  0.504  0.825  1.0
  K  K1  1  0.542  0.496  0.175  1.0
  K  K2  1  0.958  0.496  0.675  1.0
  K  K3  1  0.042  0.504  0.325  1.0
  Sm  Sm4  1  0.445  0.992  0.827  1.0
  Sm  Sm5  1  0.555  0.008  0.173  1.0
  Sm  Sm6  1  0.945  0.008  0.673  1.0
  Sm  Sm7  1  0.055  0.992  0.327  1.0
  Sm  Sm8  1  0.413  0.767  0.497  1.0
  Sm  Sm9  1  0.587  0.233  0.503  1.0
  Sm  Sm10  1  0.913  0.233  0.003  1.0
  Sm  Sm11  1  0.087  0.767  0.997  1.0
  I  I12  1  0.337  0.466  0.585  1.0
  I  I13  1  0.663  0.534  0.415  1.0
  I  I14  1  0.837  0.534  0.915  1.0
  I  I15  1  0.163  0.466  0.085  1.0
  I  I16  1  0.653  0.788  0.678  1.0
  I  I17  1  0.347  0.212  0.322  1.0
  I  I18  1  0.153  0.212  0.822  1.0
  I  I19  1  0.847  0.788  0.178  1.0
  I  I20  1  0.182  0.769  0.782  1.0
  I  I21  1  0.818  0.231  0.218  1.0
  I  I22  1  0.682  0.231  0.718  1.0
  I  I23  1  0.318  0.769  0.282  1.0
  I  I24  1  0.038  0.783  0.506  1.0
  I  I25  1  0.962  0.217  0.494  1.0
  I  I26  1  0.538  0.217  0.994  1.0
  I  I27  1  0.462  0.783  0.006  1.0
  I  I28  1  0.834  0.955  0.894  1.0
  I  I29  1  0.166  0.045  0.106  1.0
  I  I30  1  0.334  0.045  0.606  1.0
  I  I31  1  0.666  0.955  0.394  1.0
[/CIF]
.