The crystal structure described by K3Tb(BO3)2 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(2) and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Tb(1) is bonded in an octahedral geometry to two equivalent O(2) and four equivalent O(1) atoms. B(1) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one K(2), two equivalent K(1), one Tb(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), two equivalent K(1), one Tb(1), and one B(1) atom. is represented by the CIF file [CIF]
data_K3Tb(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.598
_cell_length_b   6.877
_cell_length_c   9.489
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   365.298
_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  0.000  0.267  0.668  1.0
  K  K1  1  0.000  0.733  0.332  1.0
  K  K2  1  0.500  0.233  0.168  1.0
  K  K3  1  0.500  0.767  0.832  1.0
  K  K4  1  0.500  0.000  0.500  1.0
  K  K5  1  0.000  0.500  0.000  1.0
  Tb  Tb6  1  0.000  0.000  0.000  1.0
  Tb  Tb7  1  0.500  0.500  0.500  1.0
  B  B8  1  0.000  0.263  0.334  1.0
  B  B9  1  0.000  0.737  0.666  1.0
  B  B10  1  0.500  0.237  0.834  1.0
  B  B11  1  0.500  0.763  0.166  1.0
  O  O12  1  0.216  0.299  0.403  1.0
  O  O13  1  0.784  0.701  0.597  1.0
  O  O14  1  0.216  0.701  0.597  1.0
  O  O15  1  0.284  0.201  0.903  1.0
  O  O16  1  0.784  0.299  0.403  1.0
  O  O17  1  0.716  0.799  0.097  1.0
  O  O18  1  0.284  0.799  0.097  1.0
  O  O19  1  0.716  0.201  0.903  1.0
  O  O20  1  0.000  0.193  0.196  1.0
  O  O21  1  0.000  0.807  0.804  1.0
  O  O22  1  0.500  0.307  0.696  1.0
  O  O23  1  0.500  0.693  0.304  1.0
[/CIF]
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The crystal structure described by K3Tb(BO3)2 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(2) and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Tb(1) is bonded in an octahedral geometry to two equivalent O(2) and four equivalent O(1) atoms. B(1) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one K(2), two equivalent K(1), one Tb(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), two equivalent K(1), one Tb(1), and one B(1) atom. is represented by the CIF file [CIF]
data_K3Tb(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.598
_cell_length_b   6.877
_cell_length_c   9.489
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   365.298
_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  0.000  0.267  0.668  1.0
  K  K1  1  0.000  0.733  0.332  1.0
  K  K2  1  0.500  0.233  0.168  1.0
  K  K3  1  0.500  0.767  0.832  1.0
  K  K4  1  0.500  0.000  0.500  1.0
  K  K5  1  0.000  0.500  0.000  1.0
  Tb  Tb6  1  0.000  0.000  0.000  1.0
  Tb  Tb7  1  0.500  0.500  0.500  1.0
  B  B8  1  0.000  0.263  0.334  1.0
  B  B9  1  0.000  0.737  0.666  1.0
  B  B10  1  0.500  0.237  0.834  1.0
  B  B11  1  0.500  0.763  0.166  1.0
  O  O12  1  0.216  0.299  0.403  1.0
  O  O13  1  0.784  0.701  0.597  1.0
  O  O14  1  0.216  0.701  0.597  1.0
  O  O15  1  0.284  0.201  0.903  1.0
  O  O16  1  0.784  0.299  0.403  1.0
  O  O17  1  0.716  0.799  0.097  1.0
  O  O18  1  0.284  0.799  0.097  1.0
  O  O19  1  0.716  0.201  0.903  1.0
  O  O20  1  0.000  0.193  0.196  1.0
  O  O21  1  0.000  0.807  0.804  1.0
  O  O22  1  0.500  0.307  0.696  1.0
  O  O23  1  0.500  0.693  0.304  1.0
[/CIF]
.