The structure described by K3Nd3I10 crystallizes in the monoclinic P2_1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one I(1), one I(10), one I(2), one I(3), one I(4), one I(5), one I(6), one I(7), and one I(9) atom. In the second K site, K(2) is bonded in a 8-coordinate geometry to one I(1), one I(10), one I(2), one I(4), one I(5), one I(6), one I(7), and one I(8) atom. In the third K site, K(3) is bonded in a 8-coordinate geometry to one I(1), one I(10), one I(2), one I(3), one I(5), one I(6), one I(7), and one I(9) atom. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one I(1), one I(10), one I(5), one I(6), one I(7), and one I(8) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one I(1), one I(3), one I(4), one I(5), one I(7), one I(8), and one I(9) atom. In the third Nd site, Nd(3) is bonded in a distorted pentagonal bipyramidal geometry to one I(10), one I(2), one I(3), one I(4), one I(6), one I(8), and one I(9) atom. There are ten inequivalent I sites. In the first I site, I(1) is bonded to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom to form distorted IK3Nd2 square pyramids that share corners with four equivalent I(10)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra, corners with three equivalent I(2)K3Nd trigonal pyramids,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  a faceface with one I(4)K2Nd2 tetrahedra. In the second I site, I(2) is bonded to one K(1), one K(2), one K(3), and one Nd(3) atom to form distorted IK3Nd trigonal pyramids that share corners with two equivalent I(10)K3Nd2 square pyramids, corners with three equivalent I(1)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra,  a cornercorner with one I(4)K2Nd2 tetrahedra,  an edgeedge with one I(10)K3Nd2 square pyramid,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  an edgeedge with one I(4)K2Nd2 tetrahedra. In the third I site, I(3) is bonded to one K(1), one K(3), one Nd(2), and one Nd(3) atom to form distorted IK2Nd2 tetrahedra that share  a cornercorner with one I(1)K3Nd2 square pyramid,  a cornercorner with one I(10)K3Nd2 square pyramid, corners with three equivalent I(4)K2Nd2 tetrahedra,  a cornercorner with one I(2)K3Nd trigonal pyramid,  an edgeedge with one I(1)K3Nd2 square pyramid,  an edgeedge with one I(10)K3Nd2 square pyramid, and  an edgeedge with one I(2)K3Nd trigonal pyramid. In the fourth I site, I(4) is bonded to one K(1), one K(2), one Nd(2), and one Nd(3) atom to form distorted IK2Nd2 tetrahedra that share corners with three equivalent I(10)K3Nd2 square pyramids, corners with three equivalent I(3)K2Nd2 tetrahedra,  a cornercorner with one I(2)K3Nd trigonal pyramid,  an edgeedge with one I(2)K3Nd trigonal pyramid, and  a faceface with one I(1)K3Nd2 square pyramid. In the fifth I site, I(5) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom. In the sixth I site, I(6) is bonded in a 4-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(3) atom. In the seventh I site, I(7) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom. In the eighth I site, I(8) is bonded in a 4-coordinate geometry to one K(2), one Nd(1), one Nd(2), and one Nd(3) atom. In the ninth I site, I(9) is bonded in a rectangular see-saw-like geometry to one K(1), one K(3), one Nd(2), and one Nd(3) atom. In the tenth I site, I(10) is bonded to one K(1), one K(2), one K(3), one Nd(1), and one Nd(3) atom to form distorted IK3Nd2 square pyramids that share corners with four equivalent I(1)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra, corners with three equivalent I(4)K2Nd2 tetrahedra, corners with two equivalent I(2)K3Nd trigonal pyramids,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  an edgeedge with one I(2)K3Nd trigonal pyramid. is represented by the CIF card [CIF]
data_K3Nd3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.470
_cell_length_b   9.103
_cell_length_c   9.999
_cell_angle_alpha   86.815
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1315.034
_cell_formula_units_Z   2
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  0.845  0.204  0.282  1.0
  K  K1  1  0.345  0.796  0.718  1.0
  K  K2  1  0.658  0.710  0.755  1.0
  K  K3  1  0.686  0.739  0.265  1.0
  K  K4  1  0.186  0.261  0.735  1.0
  K  K5  1  0.158  0.290  0.245  1.0
  Nd  Nd6  1  0.812  0.271  0.803  1.0
  Nd  Nd7  1  0.568  0.176  0.949  1.0
  Nd  Nd8  1  0.068  0.824  0.051  1.0
  Nd  Nd9  1  0.312  0.729  0.197  1.0
  Nd  Nd10  1  0.988  0.688  0.534  1.0
  Nd  Nd11  1  0.488  0.312  0.466  1.0
  I  I12  1  0.990  0.174  0.985  1.0
  I  I13  1  0.322  0.085  0.446  1.0
  I  I14  1  0.606  0.111  0.274  1.0
  I  I15  1  0.554  0.040  0.665  1.0
  I  I16  1  0.251  0.019  0.034  1.0
  I  I17  1  0.751  0.981  0.966  1.0
  I  I18  1  0.054  0.960  0.335  1.0
  I  I19  1  0.106  0.889  0.726  1.0
  I  I20  1  0.822  0.915  0.554  1.0
  I  I21  1  0.490  0.826  0.015  1.0
  I  I22  1  0.476  0.672  0.442  1.0
  I  I23  1  0.197  0.558  0.989  1.0
  I  I24  1  0.920  0.597  0.832  1.0
  I  I25  1  0.926  0.605  0.235  1.0
  I  I26  1  0.200  0.589  0.456  1.0
  I  I27  1  0.700  0.411  0.544  1.0
  I  I28  1  0.426  0.395  0.765  1.0
  I  I29  1  0.420  0.403  0.168  1.0
  I  I30  1  0.697  0.442  0.011  1.0
  I  I31  1  0.976  0.328  0.558  1.0
[/CIF]
.
The structure described by K3Nd3I10 crystallizes in the monoclinic P2_1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one I(1), one I(10), one I(2), one I(3), one I(4), one I(5), one I(6), one I(7), and one I(9) atom. In the second K site, K(2) is bonded in a 8-coordinate geometry to one I(1), one I(10), one I(2), one I(4), one I(5), one I(6), one I(7), and one I(8) atom. In the third K site, K(3) is bonded in a 8-coordinate geometry to one I(1), one I(10), one I(2), one I(3), one I(5), one I(6), one I(7), and one I(9) atom. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one I(1), one I(10), one I(5), one I(6), one I(7), and one I(8) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one I(1), one I(3), one I(4), one I(5), one I(7), one I(8), and one I(9) atom. In the third Nd site, Nd(3) is bonded in a distorted pentagonal bipyramidal geometry to one I(10), one I(2), one I(3), one I(4), one I(6), one I(8), and one I(9) atom. There are ten inequivalent I sites. In the first I site, I(1) is bonded to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom to form distorted IK3Nd2 square pyramids that share corners with four equivalent I(10)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra, corners with three equivalent I(2)K3Nd trigonal pyramids,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  a faceface with one I(4)K2Nd2 tetrahedra. In the second I site, I(2) is bonded to one K(1), one K(2), one K(3), and one Nd(3) atom to form distorted IK3Nd trigonal pyramids that share corners with two equivalent I(10)K3Nd2 square pyramids, corners with three equivalent I(1)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra,  a cornercorner with one I(4)K2Nd2 tetrahedra,  an edgeedge with one I(10)K3Nd2 square pyramid,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  an edgeedge with one I(4)K2Nd2 tetrahedra. In the third I site, I(3) is bonded to one K(1), one K(3), one Nd(2), and one Nd(3) atom to form distorted IK2Nd2 tetrahedra that share  a cornercorner with one I(1)K3Nd2 square pyramid,  a cornercorner with one I(10)K3Nd2 square pyramid, corners with three equivalent I(4)K2Nd2 tetrahedra,  a cornercorner with one I(2)K3Nd trigonal pyramid,  an edgeedge with one I(1)K3Nd2 square pyramid,  an edgeedge with one I(10)K3Nd2 square pyramid, and  an edgeedge with one I(2)K3Nd trigonal pyramid. In the fourth I site, I(4) is bonded to one K(1), one K(2), one Nd(2), and one Nd(3) atom to form distorted IK2Nd2 tetrahedra that share corners with three equivalent I(10)K3Nd2 square pyramids, corners with three equivalent I(3)K2Nd2 tetrahedra,  a cornercorner with one I(2)K3Nd trigonal pyramid,  an edgeedge with one I(2)K3Nd trigonal pyramid, and  a faceface with one I(1)K3Nd2 square pyramid. In the fifth I site, I(5) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom. In the sixth I site, I(6) is bonded in a 4-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(3) atom. In the seventh I site, I(7) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Nd(1), and one Nd(2) atom. In the eighth I site, I(8) is bonded in a 4-coordinate geometry to one K(2), one Nd(1), one Nd(2), and one Nd(3) atom. In the ninth I site, I(9) is bonded in a rectangular see-saw-like geometry to one K(1), one K(3), one Nd(2), and one Nd(3) atom. In the tenth I site, I(10) is bonded to one K(1), one K(2), one K(3), one Nd(1), and one Nd(3) atom to form distorted IK3Nd2 square pyramids that share corners with four equivalent I(1)K3Nd2 square pyramids,  a cornercorner with one I(3)K2Nd2 tetrahedra, corners with three equivalent I(4)K2Nd2 tetrahedra, corners with two equivalent I(2)K3Nd trigonal pyramids,  an edgeedge with one I(3)K2Nd2 tetrahedra, and  an edgeedge with one I(2)K3Nd trigonal pyramid. is represented by the CIF card [CIF]
data_K3Nd3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.470
_cell_length_b   9.103
_cell_length_c   9.999
_cell_angle_alpha   86.815
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1315.034
_cell_formula_units_Z   2
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  0.845  0.204  0.282  1.0
  K  K1  1  0.345  0.796  0.718  1.0
  K  K2  1  0.658  0.710  0.755  1.0
  K  K3  1  0.686  0.739  0.265  1.0
  K  K4  1  0.186  0.261  0.735  1.0
  K  K5  1  0.158  0.290  0.245  1.0
  Nd  Nd6  1  0.812  0.271  0.803  1.0
  Nd  Nd7  1  0.568  0.176  0.949  1.0
  Nd  Nd8  1  0.068  0.824  0.051  1.0
  Nd  Nd9  1  0.312  0.729  0.197  1.0
  Nd  Nd10  1  0.988  0.688  0.534  1.0
  Nd  Nd11  1  0.488  0.312  0.466  1.0
  I  I12  1  0.990  0.174  0.985  1.0
  I  I13  1  0.322  0.085  0.446  1.0
  I  I14  1  0.606  0.111  0.274  1.0
  I  I15  1  0.554  0.040  0.665  1.0
  I  I16  1  0.251  0.019  0.034  1.0
  I  I17  1  0.751  0.981  0.966  1.0
  I  I18  1  0.054  0.960  0.335  1.0
  I  I19  1  0.106  0.889  0.726  1.0
  I  I20  1  0.822  0.915  0.554  1.0
  I  I21  1  0.490  0.826  0.015  1.0
  I  I22  1  0.476  0.672  0.442  1.0
  I  I23  1  0.197  0.558  0.989  1.0
  I  I24  1  0.920  0.597  0.832  1.0
  I  I25  1  0.926  0.605  0.235  1.0
  I  I26  1  0.200  0.589  0.456  1.0
  I  I27  1  0.700  0.411  0.544  1.0
  I  I28  1  0.426  0.395  0.765  1.0
  I  I29  1  0.420  0.403  0.168  1.0
  I  I30  1  0.697  0.442  0.011  1.0
  I  I31  1  0.976  0.328  0.558  1.0
[/CIF]
.