The compound described by K2Li2CoO4 crystallizes in the triclinic P1 space group. There are eight inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(14), one O(2), and one O(7) atom. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(15), one O(3), one O(5), one O(7), and two equivalent O(11) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(9), and two equivalent O(13) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(12), one O(2), one O(7), one O(8), and two equivalent O(16) atoms. In the fifth K site, K(5) is bonded in a 5-coordinate geometry to one O(15), one O(5), one O(9), and two equivalent O(1) atoms. In the sixth K site, K(6) is bonded in a 3-coordinate geometry to one O(11), one O(15), and one O(8) atom. In the seventh K site, K(7) is bonded in a 6-coordinate geometry to one O(12), one O(13), one O(2), one O(4), and two equivalent O(6) atoms. In the eighth K site, K(8) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(15), one O(16), one O(3), and two equivalent O(7) atoms. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(13), one O(14), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Co(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(14), one O(3), one O(5), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Co(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(15), one O(16), one O(4), and one O(8) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fifth Li site, Li(5) is bonded to one O(10), one O(2), one O(6), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Co(4)O4 tetrahedra. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(10), one O(14), one O(5), and one O(6) atom. In the seventh Li site, Li(7) is bonded to one O(11), one O(12), one O(14), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Co(3)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(12), one O(16), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(4)O4 tetrahedra,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(15), one O(7), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(3), one O(4), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the third Co site, Co(3) is bonded to one O(11), one O(13), one O(14), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(7)O4 tetrahedra. In the fourth Co site, Co(4) is bonded to one O(10), one O(16), one O(2), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, and  an edgeedge with one Li(5)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(5), one Li(1), one Li(3), and one Co(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one K(4), one K(7), one Li(3), one Li(5), and one Co(4) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(2), one K(8), one Li(2), one Li(7), one Li(8), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(3), one K(7), one Li(4), one Li(8), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(2), one K(3), one K(5), one Li(1), one Li(2), one Li(6), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(7), one Li(2), one Li(5), one Li(6), and one Co(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(4), two equivalent K(8), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(4), one K(6), one Li(3), one Li(4), and one Co(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one K(3), one K(5), one Li(3), one Li(5), and one Co(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(1), one K(8), one Li(5), one Li(6), and one Co(4) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one K(6), one K(8), two equivalent K(2), one Li(7), and one Co(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one K(4), one K(7), one Li(7), one Li(8), and one Co(2) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one K(7), two equivalent K(3), one Li(1), and one Co(3) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one K(1), one Li(1), one Li(2), one Li(6), one Li(7), and one Co(3) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one K(2), one K(5), one K(6), one K(8), one Li(4), and one Co(1) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one K(8), two equivalent K(4), one Li(4), one Li(8), and one Co(4) atom. is represented by the CIF card [CIF]
data_K2Li2CoO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.601
_cell_length_b   8.994
_cell_length_c   10.400
_cell_angle_alpha   86.990
_cell_angle_beta   82.386
_cell_angle_gamma   89.601
_symmetry_Int_Tables_number   1
_cell_volume   518.584
_cell_formula_units_Z   4
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  0.152  0.004  0.128  1.0
  K  K1  1  0.178  0.211  0.642  1.0
  K  K2  1  0.360  0.486  0.370  1.0
  K  K3  1  0.379  0.782  0.875  1.0
  K  K4  1  0.667  0.309  0.094  1.0
  K  K5  1  0.659  0.452  0.687  1.0
  K  K6  1  0.871  0.691  0.378  1.0
  K  K7  1  0.778  0.048  0.854  1.0
  Li  Li8  1  0.089  0.247  0.294  1.0
  Li  Li9  1  0.193  0.003  0.426  1.0
  Li  Li10  1  0.276  0.520  0.074  1.0
  Li  Li11  1  0.062  0.531  0.827  1.0
  Li  Li12  1  0.411  0.753  0.196  1.0
  Li  Li13  1  0.610  0.975  0.289  1.0
  Li  Li14  1  0.778  0.968  0.560  1.0
  Li  Li15  1  0.911  0.755  0.698  1.0
  Co  Co16  1  0.198  0.297  0.939  1.0
  Co  Co17  1  0.326  0.778  0.558  1.0
  Co  Co18  1  0.684  0.201  0.433  1.0
  Co  Co19  1  0.823  0.720  0.062  1.0
  O  O20  1  0.149  0.307  0.116  1.0
  O  O21  1  0.107  0.704  0.129  1.0
  O  O22  1  0.107  0.922  0.608  1.0
  O  O23  1  0.163  0.609  0.613  1.0
  O  O24  1  0.400  0.176  0.365  1.0
  O  O25  1  0.377  0.811  0.379  1.0
  O  O26  1  0.314  0.118  0.897  1.0
  O  O27  1  0.355  0.470  0.893  1.0
  O  O28  1  0.600  0.588  0.138  1.0
  O  O29  1  0.672  0.895  0.113  1.0
  O  O30  1  0.656  0.165  0.604  1.0
  O  O31  1  0.612  0.783  0.620  1.0
  O  O32  1  0.833  0.375  0.393  1.0
  O  O33  1  0.883  0.050  0.366  1.0
  O  O34  1  0.934  0.328  0.858  1.0
  O  O35  1  0.886  0.718  0.885  1.0
[/CIF]
.
The compound described by K2Li2CoO4 crystallizes in the triclinic P1 space group. There are eight inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(14), one O(2), and one O(7) atom. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(15), one O(3), one O(5), one O(7), and two equivalent O(11) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(9), and two equivalent O(13) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(12), one O(2), one O(7), one O(8), and two equivalent O(16) atoms. In the fifth K site, K(5) is bonded in a 5-coordinate geometry to one O(15), one O(5), one O(9), and two equivalent O(1) atoms. In the sixth K site, K(6) is bonded in a 3-coordinate geometry to one O(11), one O(15), and one O(8) atom. In the seventh K site, K(7) is bonded in a 6-coordinate geometry to one O(12), one O(13), one O(2), one O(4), and two equivalent O(6) atoms. In the eighth K site, K(8) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(15), one O(16), one O(3), and two equivalent O(7) atoms. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(13), one O(14), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Co(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(14), one O(3), one O(5), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Co(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(15), one O(16), one O(4), and one O(8) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fifth Li site, Li(5) is bonded to one O(10), one O(2), one O(6), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Co(4)O4 tetrahedra. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(10), one O(14), one O(5), and one O(6) atom. In the seventh Li site, Li(7) is bonded to one O(11), one O(12), one O(14), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Co(3)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(12), one O(16), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra,  an edgeedge with one Li(4)O4 tetrahedra,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(15), one O(7), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(3), one O(4), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the third Co site, Co(3) is bonded to one O(11), one O(13), one O(14), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(7)O4 tetrahedra. In the fourth Co site, Co(4) is bonded to one O(10), one O(16), one O(2), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, and  an edgeedge with one Li(5)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(5), one Li(1), one Li(3), and one Co(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one K(4), one K(7), one Li(3), one Li(5), and one Co(4) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(2), one K(8), one Li(2), one Li(7), one Li(8), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(3), one K(7), one Li(4), one Li(8), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(2), one K(3), one K(5), one Li(1), one Li(2), one Li(6), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(7), one Li(2), one Li(5), one Li(6), and one Co(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(4), two equivalent K(8), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(4), one K(6), one Li(3), one Li(4), and one Co(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one K(3), one K(5), one Li(3), one Li(5), and one Co(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(1), one K(8), one Li(5), one Li(6), and one Co(4) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one K(6), one K(8), two equivalent K(2), one Li(7), and one Co(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one K(4), one K(7), one Li(7), one Li(8), and one Co(2) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one K(7), two equivalent K(3), one Li(1), and one Co(3) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one K(1), one Li(1), one Li(2), one Li(6), one Li(7), and one Co(3) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one K(2), one K(5), one K(6), one K(8), one Li(4), and one Co(1) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one K(8), two equivalent K(4), one Li(4), one Li(8), and one Co(4) atom. is represented by the CIF card [CIF]
data_K2Li2CoO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.601
_cell_length_b   8.994
_cell_length_c   10.400
_cell_angle_alpha   86.990
_cell_angle_beta   82.386
_cell_angle_gamma   89.601
_symmetry_Int_Tables_number   1
_cell_volume   518.584
_cell_formula_units_Z   4
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  0.152  0.004  0.128  1.0
  K  K1  1  0.178  0.211  0.642  1.0
  K  K2  1  0.360  0.486  0.370  1.0
  K  K3  1  0.379  0.782  0.875  1.0
  K  K4  1  0.667  0.309  0.094  1.0
  K  K5  1  0.659  0.452  0.687  1.0
  K  K6  1  0.871  0.691  0.378  1.0
  K  K7  1  0.778  0.048  0.854  1.0
  Li  Li8  1  0.089  0.247  0.294  1.0
  Li  Li9  1  0.193  0.003  0.426  1.0
  Li  Li10  1  0.276  0.520  0.074  1.0
  Li  Li11  1  0.062  0.531  0.827  1.0
  Li  Li12  1  0.411  0.753  0.196  1.0
  Li  Li13  1  0.610  0.975  0.289  1.0
  Li  Li14  1  0.778  0.968  0.560  1.0
  Li  Li15  1  0.911  0.755  0.698  1.0
  Co  Co16  1  0.198  0.297  0.939  1.0
  Co  Co17  1  0.326  0.778  0.558  1.0
  Co  Co18  1  0.684  0.201  0.433  1.0
  Co  Co19  1  0.823  0.720  0.062  1.0
  O  O20  1  0.149  0.307  0.116  1.0
  O  O21  1  0.107  0.704  0.129  1.0
  O  O22  1  0.107  0.922  0.608  1.0
  O  O23  1  0.163  0.609  0.613  1.0
  O  O24  1  0.400  0.176  0.365  1.0
  O  O25  1  0.377  0.811  0.379  1.0
  O  O26  1  0.314  0.118  0.897  1.0
  O  O27  1  0.355  0.470  0.893  1.0
  O  O28  1  0.600  0.588  0.138  1.0
  O  O29  1  0.672  0.895  0.113  1.0
  O  O30  1  0.656  0.165  0.604  1.0
  O  O31  1  0.612  0.783  0.620  1.0
  O  O32  1  0.833  0.375  0.393  1.0
  O  O33  1  0.883  0.050  0.366  1.0
  O  O34  1  0.934  0.328  0.858  1.0
  O  O35  1  0.886  0.718  0.885  1.0
[/CIF]
.