The crystal structure described by KEu2I5 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(5) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(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. In the second Eu site, Eu(2) is bonded to one I(1), one I(2), one I(3), two equivalent I(4), and two equivalent I(5) atoms to form distorted edge-sharing EuI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms to form IK2Eu3 trigonal bipyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with four equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(4)Eu4 trigonal pyramids, corners with two equivalent I(5)K2Eu2 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(4)Eu4 trigonal pyramids, edges with two equivalent I(5)K2Eu2 trigonal pyramids, and  a faceface with one I(3)K2Eu3 square pyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms. In the third I site, I(3) is bonded to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms to form IK2Eu3 square pyramids that share corners with four equivalent I(1)K2Eu3 trigonal bipyramids, corners with four equivalent I(4)Eu4 trigonal pyramids, corners with four equivalent I(5)K2Eu2 trigonal pyramids, edges with two equivalent I(3)K2Eu3 square pyramids,  an edgeedge with one I(1)K2Eu3 trigonal bipyramid,  an edgeedge with one I(4)Eu4 trigonal pyramid,  an edgeedge with one I(5)K2Eu2 trigonal pyramid, and  a faceface with one I(1)K2Eu3 trigonal bipyramid. In the fourth I site, I(4) is bonded to two equivalent Eu(1) and two equivalent Eu(2) atoms to form distorted IEu4 trigonal pyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with two equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(4)Eu4 trigonal pyramids, corners with four equivalent I(5)K2Eu2 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(1)K2Eu3 trigonal bipyramids, and  an edgeedge with one I(4)Eu4 trigonal pyramid. In the fifth I site, I(5) is bonded to two equivalent K(1) and two equivalent Eu(2) atoms to form distorted IK2Eu2 trigonal pyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with two equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(5)K2Eu2 trigonal pyramids, corners with four equivalent I(4)Eu4 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(1)K2Eu3 trigonal bipyramids, and  an edgeedge with one I(5)K2Eu2 trigonal pyramid. is represented by the CIF file [CIF]
data_KEu2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.973
_cell_length_b   9.957
_cell_length_c   14.325
_cell_angle_alpha   90.043
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1279.781
_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  0.953  0.507  0.171  1.0
  K  K1  1  0.453  0.493  0.329  1.0
  K  K2  1  0.047  0.493  0.829  1.0
  K  K3  1  0.547  0.507  0.671  1.0
  Eu  Eu4  1  0.975  0.003  0.180  1.0
  Eu  Eu5  1  0.926  0.250  0.495  1.0
  Eu  Eu6  1  0.426  0.750  0.005  1.0
  Eu  Eu7  1  0.074  0.750  0.505  1.0
  Eu  Eu8  1  0.574  0.250  0.995  1.0
  Eu  Eu9  1  0.525  0.003  0.680  1.0
  Eu  Eu10  1  0.025  0.997  0.820  1.0
  Eu  Eu11  1  0.475  0.997  0.320  1.0
  I  I12  1  0.189  0.767  0.283  1.0
  I  I13  1  0.834  0.779  0.682  1.0
  I  I14  1  0.334  0.221  0.818  1.0
  I  I15  1  0.166  0.221  0.318  1.0
  I  I16  1  0.666  0.779  0.182  1.0
  I  I17  1  0.811  0.233  0.717  1.0
  I  I18  1  0.311  0.767  0.783  1.0
  I  I19  1  0.957  0.219  0.998  1.0
  I  I20  1  0.838  0.959  0.401  1.0
  I  I21  1  0.338  0.041  0.099  1.0
  I  I22  1  0.162  0.041  0.599  1.0
  I  I23  1  0.662  0.959  0.901  1.0
  I  I24  1  0.043  0.781  0.002  1.0
  I  I25  1  0.457  0.781  0.502  1.0
  I  I26  1  0.674  0.538  0.913  1.0
  I  I27  1  0.543  0.219  0.498  1.0
  I  I28  1  0.826  0.538  0.413  1.0
  I  I29  1  0.326  0.462  0.087  1.0
  I  I30  1  0.174  0.462  0.587  1.0
  I  I31  1  0.689  0.233  0.217  1.0
[/CIF]
.
The crystal structure described by KEu2I5 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(5) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(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. In the second Eu site, Eu(2) is bonded to one I(1), one I(2), one I(3), two equivalent I(4), and two equivalent I(5) atoms to form distorted edge-sharing EuI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms to form IK2Eu3 trigonal bipyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with four equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(4)Eu4 trigonal pyramids, corners with two equivalent I(5)K2Eu2 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(4)Eu4 trigonal pyramids, edges with two equivalent I(5)K2Eu2 trigonal pyramids, and  a faceface with one I(3)K2Eu3 square pyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms. In the third I site, I(3) is bonded to two equivalent K(1), one Eu(2), and two equivalent Eu(1) atoms to form IK2Eu3 square pyramids that share corners with four equivalent I(1)K2Eu3 trigonal bipyramids, corners with four equivalent I(4)Eu4 trigonal pyramids, corners with four equivalent I(5)K2Eu2 trigonal pyramids, edges with two equivalent I(3)K2Eu3 square pyramids,  an edgeedge with one I(1)K2Eu3 trigonal bipyramid,  an edgeedge with one I(4)Eu4 trigonal pyramid,  an edgeedge with one I(5)K2Eu2 trigonal pyramid, and  a faceface with one I(1)K2Eu3 trigonal bipyramid. In the fourth I site, I(4) is bonded to two equivalent Eu(1) and two equivalent Eu(2) atoms to form distorted IEu4 trigonal pyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with two equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(4)Eu4 trigonal pyramids, corners with four equivalent I(5)K2Eu2 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(1)K2Eu3 trigonal bipyramids, and  an edgeedge with one I(4)Eu4 trigonal pyramid. In the fifth I site, I(5) is bonded to two equivalent K(1) and two equivalent Eu(2) atoms to form distorted IK2Eu2 trigonal pyramids that share corners with four equivalent I(3)K2Eu3 square pyramids, corners with two equivalent I(1)K2Eu3 trigonal bipyramids, corners with two equivalent I(5)K2Eu2 trigonal pyramids, corners with four equivalent I(4)Eu4 trigonal pyramids,  an edgeedge with one I(3)K2Eu3 square pyramid, edges with two equivalent I(1)K2Eu3 trigonal bipyramids, and  an edgeedge with one I(5)K2Eu2 trigonal pyramid. is represented by the CIF file [CIF]
data_KEu2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.973
_cell_length_b   9.957
_cell_length_c   14.325
_cell_angle_alpha   90.043
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1279.781
_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  0.953  0.507  0.171  1.0
  K  K1  1  0.453  0.493  0.329  1.0
  K  K2  1  0.047  0.493  0.829  1.0
  K  K3  1  0.547  0.507  0.671  1.0
  Eu  Eu4  1  0.975  0.003  0.180  1.0
  Eu  Eu5  1  0.926  0.250  0.495  1.0
  Eu  Eu6  1  0.426  0.750  0.005  1.0
  Eu  Eu7  1  0.074  0.750  0.505  1.0
  Eu  Eu8  1  0.574  0.250  0.995  1.0
  Eu  Eu9  1  0.525  0.003  0.680  1.0
  Eu  Eu10  1  0.025  0.997  0.820  1.0
  Eu  Eu11  1  0.475  0.997  0.320  1.0
  I  I12  1  0.189  0.767  0.283  1.0
  I  I13  1  0.834  0.779  0.682  1.0
  I  I14  1  0.334  0.221  0.818  1.0
  I  I15  1  0.166  0.221  0.318  1.0
  I  I16  1  0.666  0.779  0.182  1.0
  I  I17  1  0.811  0.233  0.717  1.0
  I  I18  1  0.311  0.767  0.783  1.0
  I  I19  1  0.957  0.219  0.998  1.0
  I  I20  1  0.838  0.959  0.401  1.0
  I  I21  1  0.338  0.041  0.099  1.0
  I  I22  1  0.162  0.041  0.599  1.0
  I  I23  1  0.662  0.959  0.901  1.0
  I  I24  1  0.043  0.781  0.002  1.0
  I  I25  1  0.457  0.781  0.502  1.0
  I  I26  1  0.674  0.538  0.913  1.0
  I  I27  1  0.543  0.219  0.498  1.0
  I  I28  1  0.826  0.538  0.413  1.0
  I  I29  1  0.326  0.462  0.087  1.0
  I  I30  1  0.174  0.462  0.587  1.0
  I  I31  1  0.689  0.233  0.217  1.0
[/CIF]
.