The structure described by KTbTi4O12 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms to form distorted KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra and faces with eight equivalent Ti(1)O6 octahedra. Tb(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Ti(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and faces with two equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-24°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Tb(1) and two equivalent Ti(1) atoms. is represented by the CIF file [CIF]
data_KTbTi4O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.479
_cell_length_b   5.479
_cell_length_c   7.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.032
_symmetry_Int_Tables_number   1
_cell_volume   233.340
_cell_formula_units_Z   1
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  0.989  0.011  0.000  1.0
  Tb  Tb1  1  0.522  0.478  0.500  1.0
  Ti  Ti2  1  0.496  0.991  0.243  1.0
  Ti  Ti3  1  0.496  0.991  0.757  1.0
  Ti  Ti4  1  0.009  0.504  0.757  1.0
  Ti  Ti5  1  0.009  0.504  0.243  1.0
  O  O6  1  0.249  0.250  0.271  1.0
  O  O7  1  0.750  0.751  0.271  1.0
  O  O8  1  0.750  0.751  0.729  1.0
  O  O9  1  0.249  0.250  0.729  1.0
  O  O10  1  0.270  0.730  0.293  1.0
  O  O11  1  0.732  0.268  0.255  1.0
  O  O12  1  0.732  0.268  0.745  1.0
  O  O13  1  0.270  0.730  0.707  1.0
  O  O14  1  0.486  0.989  0.000  1.0
  O  O15  1  0.518  0.045  0.500  1.0
  O  O16  1  0.011  0.514  0.000  1.0
  O  O17  1  0.955  0.482  0.500  1.0
[/CIF]
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The structure described by KTbTi4O12 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms to form distorted KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra and faces with eight equivalent Ti(1)O6 octahedra. Tb(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Ti(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and faces with two equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-24°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Tb(1), and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Tb(1) and two equivalent Ti(1) atoms. is represented by the CIF file [CIF]
data_KTbTi4O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.479
_cell_length_b   5.479
_cell_length_c   7.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.032
_symmetry_Int_Tables_number   1
_cell_volume   233.340
_cell_formula_units_Z   1
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  0.989  0.011  0.000  1.0
  Tb  Tb1  1  0.522  0.478  0.500  1.0
  Ti  Ti2  1  0.496  0.991  0.243  1.0
  Ti  Ti3  1  0.496  0.991  0.757  1.0
  Ti  Ti4  1  0.009  0.504  0.757  1.0
  Ti  Ti5  1  0.009  0.504  0.243  1.0
  O  O6  1  0.249  0.250  0.271  1.0
  O  O7  1  0.750  0.751  0.271  1.0
  O  O8  1  0.750  0.751  0.729  1.0
  O  O9  1  0.249  0.250  0.729  1.0
  O  O10  1  0.270  0.730  0.293  1.0
  O  O11  1  0.732  0.268  0.255  1.0
  O  O12  1  0.732  0.268  0.745  1.0
  O  O13  1  0.270  0.730  0.707  1.0
  O  O14  1  0.486  0.989  0.000  1.0
  O  O15  1  0.518  0.045  0.500  1.0
  O  O16  1  0.011  0.514  0.000  1.0
  O  O17  1  0.955  0.482  0.500  1.0
[/CIF]
.