The compound described by TbK(CrO4)2 crystallizes in the orthorhombic P2_12_12_1 space group. K(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(7), and two equivalent O(8) atoms. Tb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a tetrahedral geometry to one O(3), one O(5), one O(7), and one O(8) atom. In the second Cr site, Cr(2) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(6) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Tb(1), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Tb(1), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the seventh O site, O(7) is bonded to two equivalent K(1), one Tb(1), and one Cr(1) atom to form distorted corner-sharing OK2TbCr tetrahedra. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to two equivalent K(1), one Tb(1), and one Cr(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KTbCr2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.812
_cell_length_b   9.214
_cell_length_c   13.910
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   744.874
_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  0.737  0.091  0.587  1.0
  K  K1  1  0.763  0.909  0.087  1.0
  K  K2  1  0.263  0.591  0.913  1.0
  K  K3  1  0.237  0.409  0.413  1.0
  Tb  Tb4  1  0.223  0.042  0.858  1.0
  Tb  Tb5  1  0.723  0.458  0.142  1.0
  Tb  Tb6  1  0.277  0.958  0.358  1.0
  Tb  Tb7  1  0.777  0.542  0.642  1.0
  Cr  Cr8  1  0.733  0.153  0.338  1.0
  Cr  Cr9  1  0.267  0.653  0.162  1.0
  Cr  Cr10  1  0.272  0.816  0.617  1.0
  Cr  Cr11  1  0.728  0.316  0.883  1.0
  Cr  Cr12  1  0.233  0.347  0.662  1.0
  Cr  Cr13  1  0.767  0.847  0.838  1.0
  Cr  Cr14  1  0.228  0.184  0.117  1.0
  Cr  Cr15  1  0.772  0.684  0.383  1.0
  O  O16  1  0.484  0.697  0.604  1.0
  O  O17  1  0.980  0.232  0.893  1.0
  O  O18  1  0.016  0.303  0.104  1.0
  O  O19  1  0.254  0.191  0.721  1.0
  O  O20  1  0.793  0.555  0.466  1.0
  O  O21  1  0.984  0.803  0.396  1.0
  O  O22  1  0.172  0.485  0.733  1.0
  O  O23  1  0.293  0.945  0.534  1.0
  O  O24  1  0.795  0.610  0.274  1.0
  O  O25  1  0.328  0.515  0.233  1.0
  O  O26  1  0.754  0.309  0.279  1.0
  O  O27  1  0.672  0.015  0.267  1.0
  O  O28  1  0.207  0.055  0.034  1.0
  O  O29  1  0.495  0.657  0.087  1.0
  O  O30  1  0.028  0.620  0.098  1.0
  O  O31  1  0.705  0.390  0.774  1.0
  O  O32  1  0.020  0.732  0.607  1.0
  O  O33  1  0.520  0.768  0.393  1.0
  O  O34  1  0.505  0.157  0.413  1.0
  O  O35  1  0.205  0.110  0.226  1.0
  O  O36  1  0.005  0.343  0.587  1.0
  O  O37  1  0.516  0.197  0.896  1.0
  O  O38  1  0.707  0.445  0.966  1.0
  O  O39  1  0.746  0.691  0.779  1.0
  O  O40  1  0.972  0.120  0.402  1.0
  O  O41  1  0.995  0.843  0.913  1.0
  O  O42  1  0.295  0.890  0.726  1.0
  O  O43  1  0.472  0.380  0.598  1.0
  O  O44  1  0.246  0.809  0.221  1.0
  O  O45  1  0.828  0.985  0.767  1.0
  O  O46  1  0.480  0.268  0.107  1.0
  O  O47  1  0.528  0.880  0.902  1.0
[/CIF]
.
The compound described by TbK(CrO4)2 crystallizes in the orthorhombic P2_12_12_1 space group. K(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(7), and two equivalent O(8) atoms. Tb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a tetrahedral geometry to one O(3), one O(5), one O(7), and one O(8) atom. In the second Cr site, Cr(2) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(6) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Tb(1), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Tb(1), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one Cr(2) atom. In the seventh O site, O(7) is bonded to two equivalent K(1), one Tb(1), and one Cr(1) atom to form distorted corner-sharing OK2TbCr tetrahedra. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to two equivalent K(1), one Tb(1), and one Cr(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KTbCr2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.812
_cell_length_b   9.214
_cell_length_c   13.910
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   744.874
_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  0.737  0.091  0.587  1.0
  K  K1  1  0.763  0.909  0.087  1.0
  K  K2  1  0.263  0.591  0.913  1.0
  K  K3  1  0.237  0.409  0.413  1.0
  Tb  Tb4  1  0.223  0.042  0.858  1.0
  Tb  Tb5  1  0.723  0.458  0.142  1.0
  Tb  Tb6  1  0.277  0.958  0.358  1.0
  Tb  Tb7  1  0.777  0.542  0.642  1.0
  Cr  Cr8  1  0.733  0.153  0.338  1.0
  Cr  Cr9  1  0.267  0.653  0.162  1.0
  Cr  Cr10  1  0.272  0.816  0.617  1.0
  Cr  Cr11  1  0.728  0.316  0.883  1.0
  Cr  Cr12  1  0.233  0.347  0.662  1.0
  Cr  Cr13  1  0.767  0.847  0.838  1.0
  Cr  Cr14  1  0.228  0.184  0.117  1.0
  Cr  Cr15  1  0.772  0.684  0.383  1.0
  O  O16  1  0.484  0.697  0.604  1.0
  O  O17  1  0.980  0.232  0.893  1.0
  O  O18  1  0.016  0.303  0.104  1.0
  O  O19  1  0.254  0.191  0.721  1.0
  O  O20  1  0.793  0.555  0.466  1.0
  O  O21  1  0.984  0.803  0.396  1.0
  O  O22  1  0.172  0.485  0.733  1.0
  O  O23  1  0.293  0.945  0.534  1.0
  O  O24  1  0.795  0.610  0.274  1.0
  O  O25  1  0.328  0.515  0.233  1.0
  O  O26  1  0.754  0.309  0.279  1.0
  O  O27  1  0.672  0.015  0.267  1.0
  O  O28  1  0.207  0.055  0.034  1.0
  O  O29  1  0.495  0.657  0.087  1.0
  O  O30  1  0.028  0.620  0.098  1.0
  O  O31  1  0.705  0.390  0.774  1.0
  O  O32  1  0.020  0.732  0.607  1.0
  O  O33  1  0.520  0.768  0.393  1.0
  O  O34  1  0.505  0.157  0.413  1.0
  O  O35  1  0.205  0.110  0.226  1.0
  O  O36  1  0.005  0.343  0.587  1.0
  O  O37  1  0.516  0.197  0.896  1.0
  O  O38  1  0.707  0.445  0.966  1.0
  O  O39  1  0.746  0.691  0.779  1.0
  O  O40  1  0.972  0.120  0.402  1.0
  O  O41  1  0.995  0.843  0.913  1.0
  O  O42  1  0.295  0.890  0.726  1.0
  O  O43  1  0.472  0.380  0.598  1.0
  O  O44  1  0.246  0.809  0.221  1.0
  O  O45  1  0.828  0.985  0.767  1.0
  O  O46  1  0.480  0.268  0.107  1.0
  O  O47  1  0.528  0.880  0.902  1.0
[/CIF]
.