The material described by RbLa2Ti2NbO10 crystallizes in the tetragonal P4mm space group. Rb(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(4) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 12-coordinate geometry to four equivalent O(1), four equivalent O(5), and four equivalent O(6) atoms. In the second La site, La(2) is bonded to four equivalent O(2), four equivalent O(5), and four equivalent O(7) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(2), and four equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(1)O6 octahedra and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 9°. In the second Ti site, Ti(2) is bonded in a 5-coordinate geometry to one O(3) and four equivalent O(6) atoms. Nb(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), and four equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent La(1) and one Ti(1) atom. In the second O site, O(2) is bonded to four equivalent La(2), one Ti(1), and one Nb(1) atom to form a mixture of distorted corner and edge-sharing OLa4TiNb octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Rb(1) and one Ti(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to four equivalent Rb(1) and one Nb(1) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the sixth O site, O(6) is bonded to two equivalent La(1) and two equivalent Ti(2) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 tetrahedra. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to two equivalent La(2) and two equivalent Nb(1) atoms. is represented by the CIF file [CIF]
data_RbLa2Ti2NbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.886
_cell_length_b   3.886
_cell_length_c   15.463
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   233.454
_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
  Rb  Rb0  1  0.500  0.500  0.509  1.0
  La  La1  1  0.500  0.500  0.843  1.0
  La  La2  1  0.500  0.500  0.129  1.0
  Ti  Ti3  1  0.000  0.000  0.998  1.0
  Ti  Ti4  1  0.000  0.000  0.710  1.0
  Nb  Nb5  1  0.000  0.000  0.286  1.0
  O  O6  1  0.000  0.000  0.877  1.0
  O  O7  1  0.000  0.000  0.130  1.0
  O  O8  1  0.000  0.000  0.601  1.0
  O  O9  1  0.000  0.000  0.401  1.0
  O  O10  1  0.500  0.000  0.008  1.0
  O  O11  1  0.000  0.500  0.008  1.0
  O  O12  1  0.500  0.000  0.747  1.0
  O  O13  1  0.000  0.500  0.747  1.0
  O  O14  1  0.500  0.000  0.253  1.0
  O  O15  1  0.000  0.500  0.253  1.0
[/CIF]
.
The material described by RbLa2Ti2NbO10 crystallizes in the tetragonal P4mm space group. Rb(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(4) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 12-coordinate geometry to four equivalent O(1), four equivalent O(5), and four equivalent O(6) atoms. In the second La site, La(2) is bonded to four equivalent O(2), four equivalent O(5), and four equivalent O(7) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, and faces with four equivalent Ti(1)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(2), and four equivalent O(5) atoms to form TiO6 octahedra that share corners with four equivalent Ti(1)O6 octahedra and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 9°. In the second Ti site, Ti(2) is bonded in a 5-coordinate geometry to one O(3) and four equivalent O(6) atoms. Nb(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), and four equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent La(1) and one Ti(1) atom. In the second O site, O(2) is bonded to four equivalent La(2), one Ti(1), and one Nb(1) atom to form a mixture of distorted corner and edge-sharing OLa4TiNb octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Rb(1) and one Ti(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to four equivalent Rb(1) and one Nb(1) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), and two equivalent Ti(1) atoms. In the sixth O site, O(6) is bonded to two equivalent La(1) and two equivalent Ti(2) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 tetrahedra. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to two equivalent La(2) and two equivalent Nb(1) atoms. is represented by the CIF file [CIF]
data_RbLa2Ti2NbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.886
_cell_length_b   3.886
_cell_length_c   15.463
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   233.454
_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
  Rb  Rb0  1  0.500  0.500  0.509  1.0
  La  La1  1  0.500  0.500  0.843  1.0
  La  La2  1  0.500  0.500  0.129  1.0
  Ti  Ti3  1  0.000  0.000  0.998  1.0
  Ti  Ti4  1  0.000  0.000  0.710  1.0
  Nb  Nb5  1  0.000  0.000  0.286  1.0
  O  O6  1  0.000  0.000  0.877  1.0
  O  O7  1  0.000  0.000  0.130  1.0
  O  O8  1  0.000  0.000  0.601  1.0
  O  O9  1  0.000  0.000  0.401  1.0
  O  O10  1  0.500  0.000  0.008  1.0
  O  O11  1  0.000  0.500  0.008  1.0
  O  O12  1  0.500  0.000  0.747  1.0
  O  O13  1  0.000  0.500  0.747  1.0
  O  O14  1  0.500  0.000  0.253  1.0
  O  O15  1  0.000  0.500  0.253  1.0
[/CIF]
.