The structure described by Rb2LiNb2(TeO6)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(8) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Li(1), one O(2), one O(6), two equivalent O(3), and two equivalent O(7) atoms. Li(1) is bonded in a 3-coordinate geometry to one Rb(2), one O(6), two equivalent O(4), and two equivalent O(7) atoms. Nb(1) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Te(1)O6 octahedra, and corners with two equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(5), two equivalent O(4), and two equivalent O(8) atoms to form TeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. In the second Te site, Te(2) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(7) atoms to form TeO6 octahedra that share corners with two equivalent Te(1)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-45°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(2) and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(2), one Nb(1), and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one Te(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Te(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Rb(2), one Li(1), and two equivalent Nb(1) atoms. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Rb(2), one Li(1), one Nb(1), and one Te(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(1), and one Te(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2LiNb2(TeO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.486
_cell_length_b   7.510
_cell_length_c   7.517
_cell_angle_alpha   90.000
_cell_angle_beta   60.201
_cell_angle_gamma   120.105
_symmetry_Int_Tables_number   1
_cell_volume   299.243
_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  0.710  0.355  0.418  1.0
  Rb  Rb1  1  0.151  0.575  0.778  1.0
  Li  Li2  1  0.472  0.736  0.264  1.0
  Nb  Nb3  1  0.512  0.503  0.976  1.0
  Nb  Nb4  1  0.512  0.009  0.976  1.0
  Te  Te5  1  0.024  0.012  0.480  1.0
  Te  Te6  1  0.006  0.003  0.991  1.0
  O  O7  1  0.869  0.935  0.304  1.0
  O  O8  1  0.638  0.319  0.925  1.0
  O  O9  1  0.250  0.939  0.926  1.0
  O  O10  1  0.273  0.331  0.304  1.0
  O  O11  1  0.250  0.312  0.926  1.0
  O  O12  1  0.273  0.942  0.304  1.0
  O  O13  1  0.148  0.074  0.680  1.0
  O  O14  1  0.383  0.692  0.053  1.0
  O  O15  1  0.750  0.056  0.068  1.0
  O  O16  1  0.757  0.689  0.672  1.0
  O  O17  1  0.750  0.693  0.068  1.0
  O  O18  1  0.757  0.068  0.672  1.0
[/CIF]
.
The structure described by Rb2LiNb2(TeO6)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(8) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Li(1), one O(2), one O(6), two equivalent O(3), and two equivalent O(7) atoms. Li(1) is bonded in a 3-coordinate geometry to one Rb(2), one O(6), two equivalent O(4), and two equivalent O(7) atoms. Nb(1) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Te(1)O6 octahedra, and corners with two equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(5), two equivalent O(4), and two equivalent O(8) atoms to form TeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. In the second Te site, Te(2) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(7) atoms to form TeO6 octahedra that share corners with two equivalent Te(1)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-45°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(2) and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(2), one Nb(1), and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one Te(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Te(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Rb(2), one Li(1), and two equivalent Nb(1) atoms. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Rb(2), one Li(1), one Nb(1), and one Te(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(1), and one Te(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2LiNb2(TeO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.486
_cell_length_b   7.510
_cell_length_c   7.517
_cell_angle_alpha   90.000
_cell_angle_beta   60.201
_cell_angle_gamma   120.105
_symmetry_Int_Tables_number   1
_cell_volume   299.243
_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  0.710  0.355  0.418  1.0
  Rb  Rb1  1  0.151  0.575  0.778  1.0
  Li  Li2  1  0.472  0.736  0.264  1.0
  Nb  Nb3  1  0.512  0.503  0.976  1.0
  Nb  Nb4  1  0.512  0.009  0.976  1.0
  Te  Te5  1  0.024  0.012  0.480  1.0
  Te  Te6  1  0.006  0.003  0.991  1.0
  O  O7  1  0.869  0.935  0.304  1.0
  O  O8  1  0.638  0.319  0.925  1.0
  O  O9  1  0.250  0.939  0.926  1.0
  O  O10  1  0.273  0.331  0.304  1.0
  O  O11  1  0.250  0.312  0.926  1.0
  O  O12  1  0.273  0.942  0.304  1.0
  O  O13  1  0.148  0.074  0.680  1.0
  O  O14  1  0.383  0.692  0.053  1.0
  O  O15  1  0.750  0.056  0.068  1.0
  O  O16  1  0.757  0.689  0.672  1.0
  O  O17  1  0.750  0.693  0.068  1.0
  O  O18  1  0.757  0.068  0.672  1.0
[/CIF]
.