The crystal structure described by K2LiLa4O7 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(6), and one O(7) atom. In the second K site, K(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(6), and one O(7) atom. Li(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form distorted LiO4 trigonal pyramids that share edges with two equivalent La(4)O6 pentagonal pyramids. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(5), and one O(7) atom. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. In the third La site, La(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom. In the fourth La site, La(4) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form distorted LaO6 pentagonal pyramids that share edges with two equivalent Li(1)O4 trigonal pyramids. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Li(1), one La(3), and one La(4) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(1), one K(2), one La(2), one La(3), and one La(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one K(1), one La(1), and one La(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Li(1), one La(1), one La(2), one La(3), and one La(4) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(1), one La(1), one La(2), one La(3), and one La(4) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Li(1), one La(3), and one La(4) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one K(1), one K(2), one La(1), one La(3), and one La(4) atom. is represented by the CIF file [CIF]
data_K2LiLa4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.834
_cell_length_b   6.826
_cell_length_c   7.717
_cell_angle_alpha   91.541
_cell_angle_beta   91.420
_cell_angle_gamma   126.358
_symmetry_Int_Tables_number   1
_cell_volume   289.402
_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  0.262  0.740  0.001  1.0
  K  K1  1  0.666  0.338  0.999  1.0
  Li  Li2  1  0.131  0.871  0.499  1.0
  La  La3  1  0.919  0.974  0.260  1.0
  La  La4  1  0.027  0.081  0.741  1.0
  La  La5  1  0.349  0.651  0.501  1.0
  La  La6  1  0.675  0.326  0.500  1.0
  O  O7  1  0.031  0.610  0.338  1.0
  O  O8  1  0.985  0.384  0.698  1.0
  O  O9  1  0.037  0.953  1.000  1.0
  O  O10  1  0.246  0.228  0.462  1.0
  O  O11  1  0.772  0.755  0.538  1.0
  O  O12  1  0.389  0.970  0.663  1.0
  O  O13  1  0.615  0.014  0.302  1.0
[/CIF]
.
The crystal structure described by K2LiLa4O7 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(6), and one O(7) atom. In the second K site, K(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(6), and one O(7) atom. Li(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form distorted LiO4 trigonal pyramids that share edges with two equivalent La(4)O6 pentagonal pyramids. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(5), and one O(7) atom. In the second La site, La(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. In the third La site, La(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom. In the fourth La site, La(4) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form distorted LaO6 pentagonal pyramids that share edges with two equivalent Li(1)O4 trigonal pyramids. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Li(1), one La(3), and one La(4) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(1), one K(2), one La(2), one La(3), and one La(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one K(1), one La(1), and one La(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Li(1), one La(1), one La(2), one La(3), and one La(4) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(1), one La(1), one La(2), one La(3), and one La(4) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Li(1), one La(3), and one La(4) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one K(1), one K(2), one La(1), one La(3), and one La(4) atom. is represented by the CIF file [CIF]
data_K2LiLa4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.834
_cell_length_b   6.826
_cell_length_c   7.717
_cell_angle_alpha   91.541
_cell_angle_beta   91.420
_cell_angle_gamma   126.358
_symmetry_Int_Tables_number   1
_cell_volume   289.402
_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  0.262  0.740  0.001  1.0
  K  K1  1  0.666  0.338  0.999  1.0
  Li  Li2  1  0.131  0.871  0.499  1.0
  La  La3  1  0.919  0.974  0.260  1.0
  La  La4  1  0.027  0.081  0.741  1.0
  La  La5  1  0.349  0.651  0.501  1.0
  La  La6  1  0.675  0.326  0.500  1.0
  O  O7  1  0.031  0.610  0.338  1.0
  O  O8  1  0.985  0.384  0.698  1.0
  O  O9  1  0.037  0.953  1.000  1.0
  O  O10  1  0.246  0.228  0.462  1.0
  O  O11  1  0.772  0.755  0.538  1.0
  O  O12  1  0.389  0.970  0.663  1.0
  O  O13  1  0.615  0.014  0.302  1.0
[/CIF]
.