The crystal structure described by KTb2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), one Cl(7), and two equivalent Cl(1) atoms. There are two inequivalent Tb sites. In the first Tb site, Tb(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 edge and face-sharing TbCl7 pentagonal bipyramids. In the second Tb site, Tb(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 edge and face-sharing TbCl7 pentagonal bipyramids. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted T-shaped geometry to one K(1), one Tb(1), and one Tb(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. In the third Cl site, Cl(1) is bonded in a 3-coordinate geometry to two equivalent K(1), one Tb(1), and one Tb(2) atom. In the fourth Cl site, Cl(2) is bonded in a 3-coordinate geometry to one K(1), one Tb(1), and one Tb(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted L-shaped geometry to one K(1), one Tb(1), and one Tb(2) atom. In the sixth Cl site, Cl(4) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. is represented by the CIF card [CIF]
data_KTb2Cl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.622
_cell_length_b   6.941
_cell_length_c   12.882
_cell_angle_alpha   91.326
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1128.259
_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  0.211  0.796  0.033  1.0
  K  K1  1  0.789  0.204  0.967  1.0
  K  K2  1  0.711  0.204  0.467  1.0
  K  K3  1  0.289  0.796  0.533  1.0
  Tb  Tb4  1  0.535  0.779  0.239  1.0
  Tb  Tb5  1  0.465  0.221  0.761  1.0
  Tb  Tb6  1  0.035  0.221  0.261  1.0
  Tb  Tb7  1  0.965  0.779  0.739  1.0
  Tb  Tb8  1  0.838  0.719  0.246  1.0
  Tb  Tb9  1  0.162  0.281  0.754  1.0
  Tb  Tb10  1  0.338  0.281  0.254  1.0
  Tb  Tb11  1  0.662  0.719  0.746  1.0
  Cl  Cl12  1  0.974  0.931  0.129  1.0
  Cl  Cl13  1  0.026  0.069  0.871  1.0
  Cl  Cl14  1  0.474  0.069  0.371  1.0
  Cl  Cl15  1  0.526  0.931  0.629  1.0
  Cl  Cl16  1  0.684  0.749  0.396  1.0
  Cl  Cl17  1  0.316  0.251  0.604  1.0
  Cl  Cl18  1  0.184  0.251  0.104  1.0
  Cl  Cl19  1  0.816  0.749  0.896  1.0
  Cl  Cl20  1  0.673  0.511  0.168  1.0
  Cl  Cl21  1  0.327  0.489  0.832  1.0
  Cl  Cl22  1  0.173  0.489  0.332  1.0
  Cl  Cl23  1  0.827  0.511  0.668  1.0
  Cl  Cl24  1  0.926  0.975  0.381  1.0
  Cl  Cl25  1  0.074  0.025  0.619  1.0
  Cl  Cl26  1  0.426  0.025  0.119  1.0
  Cl  Cl27  1  0.574  0.975  0.881  1.0
  Cl  Cl28  1  0.937  0.447  0.124  1.0
  Cl  Cl29  1  0.063  0.553  0.876  1.0
  Cl  Cl30  1  0.437  0.553  0.376  1.0
  Cl  Cl31  1  0.563  0.447  0.624  1.0
  Cl  Cl32  1  0.703  0.996  0.177  1.0
  Cl  Cl33  1  0.297  0.004  0.823  1.0
  Cl  Cl34  1  0.203  0.004  0.323  1.0
  Cl  Cl35  1  0.797  0.996  0.677  1.0
  Cl  Cl36  1  0.906  0.455  0.380  1.0
  Cl  Cl37  1  0.094  0.545  0.620  1.0
  Cl  Cl38  1  0.406  0.545  0.120  1.0
  Cl  Cl39  1  0.594  0.455  0.880  1.0
[/CIF]
.
The crystal structure described by KTb2Cl7 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), one Cl(7), and two equivalent Cl(1) atoms. There are two inequivalent Tb sites. In the first Tb site, Tb(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 edge and face-sharing TbCl7 pentagonal bipyramids. In the second Tb site, Tb(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 edge and face-sharing TbCl7 pentagonal bipyramids. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded in a distorted T-shaped geometry to one K(1), one Tb(1), and one Tb(2) atom. In the second Cl site, Cl(7) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. In the third Cl site, Cl(1) is bonded in a 3-coordinate geometry to two equivalent K(1), one Tb(1), and one Tb(2) atom. In the fourth Cl site, Cl(2) is bonded in a 3-coordinate geometry to one K(1), one Tb(1), and one Tb(2) atom. In the fifth Cl site, Cl(3) is bonded in a distorted L-shaped geometry to one K(1), one Tb(1), and one Tb(2) atom. In the sixth Cl site, Cl(4) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. In the seventh Cl site, Cl(5) is bonded in a trigonal non-coplanar geometry to one K(1), one Tb(1), and one Tb(2) atom. is represented by the CIF card [CIF]
data_KTb2Cl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.622
_cell_length_b   6.941
_cell_length_c   12.882
_cell_angle_alpha   91.326
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1128.259
_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  0.211  0.796  0.033  1.0
  K  K1  1  0.789  0.204  0.967  1.0
  K  K2  1  0.711  0.204  0.467  1.0
  K  K3  1  0.289  0.796  0.533  1.0
  Tb  Tb4  1  0.535  0.779  0.239  1.0
  Tb  Tb5  1  0.465  0.221  0.761  1.0
  Tb  Tb6  1  0.035  0.221  0.261  1.0
  Tb  Tb7  1  0.965  0.779  0.739  1.0
  Tb  Tb8  1  0.838  0.719  0.246  1.0
  Tb  Tb9  1  0.162  0.281  0.754  1.0
  Tb  Tb10  1  0.338  0.281  0.254  1.0
  Tb  Tb11  1  0.662  0.719  0.746  1.0
  Cl  Cl12  1  0.974  0.931  0.129  1.0
  Cl  Cl13  1  0.026  0.069  0.871  1.0
  Cl  Cl14  1  0.474  0.069  0.371  1.0
  Cl  Cl15  1  0.526  0.931  0.629  1.0
  Cl  Cl16  1  0.684  0.749  0.396  1.0
  Cl  Cl17  1  0.316  0.251  0.604  1.0
  Cl  Cl18  1  0.184  0.251  0.104  1.0
  Cl  Cl19  1  0.816  0.749  0.896  1.0
  Cl  Cl20  1  0.673  0.511  0.168  1.0
  Cl  Cl21  1  0.327  0.489  0.832  1.0
  Cl  Cl22  1  0.173  0.489  0.332  1.0
  Cl  Cl23  1  0.827  0.511  0.668  1.0
  Cl  Cl24  1  0.926  0.975  0.381  1.0
  Cl  Cl25  1  0.074  0.025  0.619  1.0
  Cl  Cl26  1  0.426  0.025  0.119  1.0
  Cl  Cl27  1  0.574  0.975  0.881  1.0
  Cl  Cl28  1  0.937  0.447  0.124  1.0
  Cl  Cl29  1  0.063  0.553  0.876  1.0
  Cl  Cl30  1  0.437  0.553  0.376  1.0
  Cl  Cl31  1  0.563  0.447  0.624  1.0
  Cl  Cl32  1  0.703  0.996  0.177  1.0
  Cl  Cl33  1  0.297  0.004  0.823  1.0
  Cl  Cl34  1  0.203  0.004  0.323  1.0
  Cl  Cl35  1  0.797  0.996  0.677  1.0
  Cl  Cl36  1  0.906  0.455  0.380  1.0
  Cl  Cl37  1  0.094  0.545  0.620  1.0
  Cl  Cl38  1  0.406  0.545  0.120  1.0
  Cl  Cl39  1  0.594  0.455  0.880  1.0
[/CIF]
.