The material described by KEu2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), one Cl(6), and one Cl(7) atom. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted face and edge-sharing EuCl7 pentagonal bipyramids. In the second Eu site, Eu(2) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted face and edge-sharing EuCl7 pentagonal bipyramids. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted L-shaped geometry to one K(1), one Eu(1), and one Eu(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the third Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the fourth Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted T-shaped geometry to one K(1), one Eu(1), and one Eu(2) atom. In the sixth Cl site, Cl(4) is bonded in a water-like geometry to one Eu(1) and one Eu(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. is represented by the CIF file [CIF]
data_KEu2Cl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.216
_cell_length_b   7.180
_cell_length_c   13.325
_cell_angle_alpha   89.613
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1264.397
_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  0.203  0.714  0.038  1.0
  K  K1  1  0.797  0.286  0.962  1.0
  K  K2  1  0.703  0.286  0.462  1.0
  K  K3  1  0.297  0.714  0.538  1.0
  Eu  Eu4  1  0.538  0.781  0.238  1.0
  Eu  Eu5  1  0.462  0.219  0.762  1.0
  Eu  Eu6  1  0.038  0.219  0.262  1.0
  Eu  Eu7  1  0.962  0.781  0.738  1.0
  Eu  Eu8  1  0.837  0.724  0.250  1.0
  Eu  Eu9  1  0.163  0.276  0.750  1.0
  Eu  Eu10  1  0.337  0.276  0.250  1.0
  Eu  Eu11  1  0.663  0.724  0.750  1.0
  Cl  Cl12  1  0.973  0.942  0.131  1.0
  Cl  Cl13  1  0.027  0.058  0.869  1.0
  Cl  Cl14  1  0.473  0.058  0.369  1.0
  Cl  Cl15  1  0.527  0.942  0.631  1.0
  Cl  Cl16  1  0.684  0.737  0.397  1.0
  Cl  Cl17  1  0.316  0.263  0.603  1.0
  Cl  Cl18  1  0.184  0.263  0.103  1.0
  Cl  Cl19  1  0.816  0.737  0.897  1.0
  Cl  Cl20  1  0.676  0.513  0.170  1.0
  Cl  Cl21  1  0.324  0.487  0.830  1.0
  Cl  Cl22  1  0.176  0.487  0.330  1.0
  Cl  Cl23  1  0.824  0.513  0.670  1.0
  Cl  Cl24  1  0.926  0.970  0.383  1.0
  Cl  Cl25  1  0.074  0.030  0.617  1.0
  Cl  Cl26  1  0.426  0.030  0.117  1.0
  Cl  Cl27  1  0.574  0.970  0.883  1.0
  Cl  Cl28  1  0.940  0.458  0.127  1.0
  Cl  Cl29  1  0.060  0.542  0.873  1.0
  Cl  Cl30  1  0.440  0.542  0.373  1.0
  Cl  Cl31  1  0.560  0.458  0.627  1.0
  Cl  Cl32  1  0.703  0.997  0.176  1.0
  Cl  Cl33  1  0.297  0.003  0.824  1.0
  Cl  Cl34  1  0.203  0.003  0.324  1.0
  Cl  Cl35  1  0.797  0.997  0.676  1.0
  Cl  Cl36  1  0.912  0.453  0.382  1.0
  Cl  Cl37  1  0.088  0.547  0.618  1.0
  Cl  Cl38  1  0.412  0.547  0.118  1.0
  Cl  Cl39  1  0.588  0.453  0.882  1.0
[/CIF]
.
The material described by KEu2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), one Cl(6), and one Cl(7) atom. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted face and edge-sharing EuCl7 pentagonal bipyramids. In the second Eu site, Eu(2) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom to form a mixture of distorted face and edge-sharing EuCl7 pentagonal bipyramids. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted L-shaped geometry to one K(1), one Eu(1), and one Eu(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the third Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the fourth Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted T-shaped geometry to one K(1), one Eu(1), and one Eu(2) atom. In the sixth Cl site, Cl(4) is bonded in a water-like geometry to one Eu(1) and one Eu(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Eu(1), and one Eu(2) atom. is represented by the CIF file [CIF]
data_KEu2Cl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.216
_cell_length_b   7.180
_cell_length_c   13.325
_cell_angle_alpha   89.613
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1264.397
_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  0.203  0.714  0.038  1.0
  K  K1  1  0.797  0.286  0.962  1.0
  K  K2  1  0.703  0.286  0.462  1.0
  K  K3  1  0.297  0.714  0.538  1.0
  Eu  Eu4  1  0.538  0.781  0.238  1.0
  Eu  Eu5  1  0.462  0.219  0.762  1.0
  Eu  Eu6  1  0.038  0.219  0.262  1.0
  Eu  Eu7  1  0.962  0.781  0.738  1.0
  Eu  Eu8  1  0.837  0.724  0.250  1.0
  Eu  Eu9  1  0.163  0.276  0.750  1.0
  Eu  Eu10  1  0.337  0.276  0.250  1.0
  Eu  Eu11  1  0.663  0.724  0.750  1.0
  Cl  Cl12  1  0.973  0.942  0.131  1.0
  Cl  Cl13  1  0.027  0.058  0.869  1.0
  Cl  Cl14  1  0.473  0.058  0.369  1.0
  Cl  Cl15  1  0.527  0.942  0.631  1.0
  Cl  Cl16  1  0.684  0.737  0.397  1.0
  Cl  Cl17  1  0.316  0.263  0.603  1.0
  Cl  Cl18  1  0.184  0.263  0.103  1.0
  Cl  Cl19  1  0.816  0.737  0.897  1.0
  Cl  Cl20  1  0.676  0.513  0.170  1.0
  Cl  Cl21  1  0.324  0.487  0.830  1.0
  Cl  Cl22  1  0.176  0.487  0.330  1.0
  Cl  Cl23  1  0.824  0.513  0.670  1.0
  Cl  Cl24  1  0.926  0.970  0.383  1.0
  Cl  Cl25  1  0.074  0.030  0.617  1.0
  Cl  Cl26  1  0.426  0.030  0.117  1.0
  Cl  Cl27  1  0.574  0.970  0.883  1.0
  Cl  Cl28  1  0.940  0.458  0.127  1.0
  Cl  Cl29  1  0.060  0.542  0.873  1.0
  Cl  Cl30  1  0.440  0.542  0.373  1.0
  Cl  Cl31  1  0.560  0.458  0.627  1.0
  Cl  Cl32  1  0.703  0.997  0.176  1.0
  Cl  Cl33  1  0.297  0.003  0.824  1.0
  Cl  Cl34  1  0.203  0.003  0.324  1.0
  Cl  Cl35  1  0.797  0.997  0.676  1.0
  Cl  Cl36  1  0.912  0.453  0.382  1.0
  Cl  Cl37  1  0.088  0.547  0.618  1.0
  Cl  Cl38  1  0.412  0.547  0.118  1.0
  Cl  Cl39  1  0.588  0.453  0.882  1.0
[/CIF]
.