The structure described by Rb2Li14Pr3O14 crystallizes in the orthorhombic Immm space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Pr(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Pr(1)O6 octahedra,  an edgeedge with one Pr(2)O6 octahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. In the second Li site, Li(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Pr(1)O6 octahedra, corners with two equivalent Pr(2)O6 octahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and edges with four equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-42°. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form PrO6 octahedra that share corners with four equivalent Li(2)O4 tetrahedra, edges with two equivalent Pr(2)O6 octahedra, and edges with eight equivalent Li(1)O4 tetrahedra. In the second Pr site, Pr(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted PrO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Pr(1)O6 octahedra, and edges with four equivalent Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), two equivalent Li(1), one Pr(1), and one Pr(2) atom to form distorted OLi3Pr2 square pyramids that share corners with two equivalent O(1)Li3Pr2 square pyramids, edges with two equivalent O(4)Li6Pr hexagonal pyramids, and  an edgeedge with one O(1)Li3Pr2 square pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Li(2), one Li(3), two equivalent Li(1), and one Pr(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Li(1), two equivalent Li(3), and one Pr(2) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), four equivalent Li(1), and one Pr(1) atom to form distorted OLi6Pr hexagonal pyramids that share  a cornercorner with one O(4)Li6Pr hexagonal pyramid,  an edgeedge with one O(4)Li6Pr hexagonal pyramid, and edges with four equivalent O(1)Li3Pr2 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Li14Pr3O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.860
_cell_length_b   8.860
_cell_length_c   8.860
_cell_angle_alpha   129.958
_cell_angle_beta   123.561
_cell_angle_gamma   78.752
_symmetry_Int_Tables_number   1
_cell_volume   430.154
_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  0.762  0.262  1.0
  Rb  Rb1  1  0.500  0.238  0.738  1.0
  Li  Li2  1  0.713  0.145  0.124  1.0
  Li  Li3  1  0.979  0.855  0.568  1.0
  Li  Li4  1  0.021  0.589  0.876  1.0
  Li  Li5  1  0.287  0.411  0.432  1.0
  Li  Li6  1  0.021  0.145  0.432  1.0
  Li  Li7  1  0.159  0.500  0.659  1.0
  Li  Li8  1  0.841  0.500  0.341  1.0
  Li  Li9  1  0.414  0.769  0.646  1.0
  Li  Li10  1  0.586  0.231  0.354  1.0
  Li  Li11  1  0.877  0.231  0.646  1.0
  Li  Li12  1  0.123  0.769  0.354  1.0
  Li  Li13  1  0.713  0.589  0.568  1.0
  Li  Li14  1  0.287  0.855  0.876  1.0
  Li  Li15  1  0.979  0.411  0.124  1.0
  Pr  Pr16  1  0.000  0.000  0.000  1.0
  Pr  Pr17  1  0.272  0.272  0.000  1.0
  Pr  Pr18  1  0.728  0.728  0.000  1.0
  O  O19  1  0.058  0.868  0.190  1.0
  O  O20  1  0.402  0.624  0.778  1.0
  O  O21  1  0.847  0.624  0.222  1.0
  O  O22  1  0.598  0.376  0.222  1.0
  O  O23  1  0.153  0.376  0.778  1.0
  O  O24  1  0.759  0.064  0.305  1.0
  O  O25  1  0.241  0.546  0.305  1.0
  O  O26  1  0.241  0.936  0.695  1.0
  O  O27  1  0.759  0.454  0.695  1.0
  O  O28  1  0.000  0.694  0.694  1.0
  O  O29  1  0.000  0.306  0.306  1.0
  O  O30  1  0.678  0.868  0.810  1.0
  O  O31  1  0.322  0.132  0.190  1.0
  O  O32  1  0.942  0.132  0.810  1.0
[/CIF]
.
The structure described by Rb2Li14Pr3O14 crystallizes in the orthorhombic Immm space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Pr(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Pr(1)O6 octahedra,  an edgeedge with one Pr(2)O6 octahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. In the second Li site, Li(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Pr(1)O6 octahedra, corners with two equivalent Pr(2)O6 octahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and edges with four equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-42°. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form PrO6 octahedra that share corners with four equivalent Li(2)O4 tetrahedra, edges with two equivalent Pr(2)O6 octahedra, and edges with eight equivalent Li(1)O4 tetrahedra. In the second Pr site, Pr(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted PrO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Pr(1)O6 octahedra, and edges with four equivalent Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), two equivalent Li(1), one Pr(1), and one Pr(2) atom to form distorted OLi3Pr2 square pyramids that share corners with two equivalent O(1)Li3Pr2 square pyramids, edges with two equivalent O(4)Li6Pr hexagonal pyramids, and  an edgeedge with one O(1)Li3Pr2 square pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Li(2), one Li(3), two equivalent Li(1), and one Pr(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Li(1), two equivalent Li(3), and one Pr(2) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), four equivalent Li(1), and one Pr(1) atom to form distorted OLi6Pr hexagonal pyramids that share  a cornercorner with one O(4)Li6Pr hexagonal pyramid,  an edgeedge with one O(4)Li6Pr hexagonal pyramid, and edges with four equivalent O(1)Li3Pr2 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Li14Pr3O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.860
_cell_length_b   8.860
_cell_length_c   8.860
_cell_angle_alpha   129.958
_cell_angle_beta   123.561
_cell_angle_gamma   78.752
_symmetry_Int_Tables_number   1
_cell_volume   430.154
_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  0.762  0.262  1.0
  Rb  Rb1  1  0.500  0.238  0.738  1.0
  Li  Li2  1  0.713  0.145  0.124  1.0
  Li  Li3  1  0.979  0.855  0.568  1.0
  Li  Li4  1  0.021  0.589  0.876  1.0
  Li  Li5  1  0.287  0.411  0.432  1.0
  Li  Li6  1  0.021  0.145  0.432  1.0
  Li  Li7  1  0.159  0.500  0.659  1.0
  Li  Li8  1  0.841  0.500  0.341  1.0
  Li  Li9  1  0.414  0.769  0.646  1.0
  Li  Li10  1  0.586  0.231  0.354  1.0
  Li  Li11  1  0.877  0.231  0.646  1.0
  Li  Li12  1  0.123  0.769  0.354  1.0
  Li  Li13  1  0.713  0.589  0.568  1.0
  Li  Li14  1  0.287  0.855  0.876  1.0
  Li  Li15  1  0.979  0.411  0.124  1.0
  Pr  Pr16  1  0.000  0.000  0.000  1.0
  Pr  Pr17  1  0.272  0.272  0.000  1.0
  Pr  Pr18  1  0.728  0.728  0.000  1.0
  O  O19  1  0.058  0.868  0.190  1.0
  O  O20  1  0.402  0.624  0.778  1.0
  O  O21  1  0.847  0.624  0.222  1.0
  O  O22  1  0.598  0.376  0.222  1.0
  O  O23  1  0.153  0.376  0.778  1.0
  O  O24  1  0.759  0.064  0.305  1.0
  O  O25  1  0.241  0.546  0.305  1.0
  O  O26  1  0.241  0.936  0.695  1.0
  O  O27  1  0.759  0.454  0.695  1.0
  O  O28  1  0.000  0.694  0.694  1.0
  O  O29  1  0.000  0.306  0.306  1.0
  O  O30  1  0.678  0.868  0.810  1.0
  O  O31  1  0.322  0.132  0.190  1.0
  O  O32  1  0.942  0.132  0.810  1.0
[/CIF]
.