The structure described by Li7Mn2(CoO4)3 is Caswellsilverite-derived structured and crystallizes in the monoclinic P2/m space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(5)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the second Li site, Li(2) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form LiO6 octahedra that share corners with two equivalent Li(5)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with four equivalent Li(3)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-8°. In the third Li site, Li(3) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(2) atoms to form LiO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-15°. In the fourth Li site, Li(4) is bonded to two equivalent O(5) and four equivalent O(3) atoms to form LiO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-14°. In the fifth Li site, Li(5) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form LiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with four equivalent Li(3)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-8°. Mn(1) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(4), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form distorted CoO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with four equivalent Li(3)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-15°. In the second Co site, Co(2) is bonded to two equivalent O(5) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with four equivalent Li(3)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-11°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(3), one Mn(1), and two equivalent Co(2) atoms to form OLi3MnCo2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(2)Li4Co2 octahedra, edges with two equivalent O(6)Li3Mn2Co octahedra, edges with two equivalent O(4)Li5Co octahedra, edges with three equivalent O(1)Li3MnCo2 octahedra, and edges with four equivalent O(5)Li3Mn2Co octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the second O site, O(2) is bonded to one Li(2), one Li(5), two equivalent Li(3), and two equivalent Co(1) atoms to form OLi4Co2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(1)Li3MnCo2 octahedra,  an edgeedge with one O(3)Li3MnCo2 octahedra, edges with two equivalent O(2)Li4Co2 octahedra, edges with four equivalent O(6)Li3Mn2Co octahedra, and edges with four equivalent O(4)Li5Co octahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the third O site, O(3) is bonded to one Li(1), two equivalent Li(4), one Mn(1), and two equivalent Co(1) atoms to form OLi3MnCo2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(2)Li4Co2 octahedra, edges with two equivalent O(6)Li3Mn2Co octahedra, edges with two equivalent O(4)Li5Co octahedra, edges with three equivalent O(3)Li3MnCo2 octahedra, and edges with four equivalent O(5)Li3Mn2Co octahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the fourth O site, O(4) is bonded to one Li(3), two equivalent Li(1), two equivalent Li(5), and one Co(1) atom to form OLi5Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(5)Li3Mn2Co octahedra, edges with two equivalent O(1)Li3MnCo2 octahedra, edges with two equivalent O(3)Li3MnCo2 octahedra, edges with three equivalent O(4)Li5Co octahedra, and edges with four equivalent O(2)Li4Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the fifth O site, O(5) is bonded to one Li(4), two equivalent Li(1), two equivalent Mn(1), and one Co(2) atom to form OLi3Mn2Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(6)Li3Mn2Co octahedra,  an edgeedge with one O(4)Li5Co octahedra, edges with two equivalent O(5)Li3Mn2Co octahedra, edges with four equivalent O(1)Li3MnCo2 octahedra, and edges with four equivalent O(3)Li3MnCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the sixth O site, O(6) is bonded to one Li(3), two equivalent Li(2), two equivalent Mn(1), and one Co(1) atom to form distorted OLi3Mn2Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(5)Li3Mn2Co octahedra, edges with two equivalent O(1)Li3MnCo2 octahedra, edges with two equivalent O(3)Li3MnCo2 octahedra, edges with three equivalent O(6)Li3Mn2Co octahedra, and edges with four equivalent O(2)Li4Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF card [CIF]
data_Li7Mn2(CoO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.899
_cell_length_b   8.323
_cell_length_c   9.840
_cell_angle_alpha   65.415
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   215.886
_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
  Li  Li0  1  0.000  0.338  0.321  1.0
  Li  Li1  1  0.000  0.662  0.679  1.0
  Li  Li2  1  0.000  0.000  0.000  1.0
  Li  Li3  1  0.500  0.812  0.845  1.0
  Li  Li4  1  0.500  0.188  0.155  1.0
  Li  Li5  1  0.500  0.500  0.500  1.0
  Li  Li6  1  0.000  0.500  0.000  1.0
  Mn  Mn7  1  0.000  0.166  0.669  1.0
  Mn  Mn8  1  0.000  0.834  0.331  1.0
  Co  Co9  1  0.500  0.648  0.159  1.0
  Co  Co10  1  0.500  0.000  0.500  1.0
  Co  Co11  1  0.500  0.352  0.841  1.0
  O  O12  1  0.000  0.935  0.659  1.0
  O  O13  1  0.000  0.248  0.986  1.0
  O  O14  1  0.000  0.608  0.324  1.0
  O  O15  1  0.500  0.427  0.173  1.0
  O  O16  1  0.500  0.762  0.481  1.0
  O  O17  1  0.500  0.093  0.812  1.0
  O  O18  1  0.000  0.752  0.014  1.0
  O  O19  1  0.000  0.065  0.341  1.0
  O  O20  1  0.000  0.392  0.676  1.0
  O  O21  1  0.500  0.238  0.519  1.0
  O  O22  1  0.500  0.573  0.827  1.0
  O  O23  1  0.500  0.907  0.188  1.0
[/CIF]
.
The structure described by Li7Mn2(CoO4)3 is Caswellsilverite-derived structured and crystallizes in the monoclinic P2/m space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(5)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the second Li site, Li(2) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form LiO6 octahedra that share corners with two equivalent Li(5)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with four equivalent Li(3)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-8°. In the third Li site, Li(3) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(2) atoms to form LiO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-15°. In the fourth Li site, Li(4) is bonded to two equivalent O(5) and four equivalent O(3) atoms to form LiO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-14°. In the fifth Li site, Li(5) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form LiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with four equivalent Li(3)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-8°. Mn(1) is bonded to one O(1), one O(3), two equivalent O(5), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(4), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form distorted CoO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with four equivalent Li(3)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-15°. In the second Co site, Co(2) is bonded to two equivalent O(5) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with four equivalent Li(3)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-11°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(3), one Mn(1), and two equivalent Co(2) atoms to form OLi3MnCo2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(2)Li4Co2 octahedra, edges with two equivalent O(6)Li3Mn2Co octahedra, edges with two equivalent O(4)Li5Co octahedra, edges with three equivalent O(1)Li3MnCo2 octahedra, and edges with four equivalent O(5)Li3Mn2Co octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the second O site, O(2) is bonded to one Li(2), one Li(5), two equivalent Li(3), and two equivalent Co(1) atoms to form OLi4Co2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(1)Li3MnCo2 octahedra,  an edgeedge with one O(3)Li3MnCo2 octahedra, edges with two equivalent O(2)Li4Co2 octahedra, edges with four equivalent O(6)Li3Mn2Co octahedra, and edges with four equivalent O(4)Li5Co octahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the third O site, O(3) is bonded to one Li(1), two equivalent Li(4), one Mn(1), and two equivalent Co(1) atoms to form OLi3MnCo2 octahedra that share corners with two equivalent O(1)Li3MnCo2 octahedra, corners with two equivalent O(3)Li3MnCo2 octahedra, corners with two equivalent O(2)Li4Co2 octahedra,  an edgeedge with one O(2)Li4Co2 octahedra, edges with two equivalent O(6)Li3Mn2Co octahedra, edges with two equivalent O(4)Li5Co octahedra, edges with three equivalent O(3)Li3MnCo2 octahedra, and edges with four equivalent O(5)Li3Mn2Co octahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the fourth O site, O(4) is bonded to one Li(3), two equivalent Li(1), two equivalent Li(5), and one Co(1) atom to form OLi5Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(5)Li3Mn2Co octahedra, edges with two equivalent O(1)Li3MnCo2 octahedra, edges with two equivalent O(3)Li3MnCo2 octahedra, edges with three equivalent O(4)Li5Co octahedra, and edges with four equivalent O(2)Li4Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the fifth O site, O(5) is bonded to one Li(4), two equivalent Li(1), two equivalent Mn(1), and one Co(2) atom to form OLi3Mn2Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(6)Li3Mn2Co octahedra,  an edgeedge with one O(4)Li5Co octahedra, edges with two equivalent O(5)Li3Mn2Co octahedra, edges with four equivalent O(1)Li3MnCo2 octahedra, and edges with four equivalent O(3)Li3MnCo2 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the sixth O site, O(6) is bonded to one Li(3), two equivalent Li(2), two equivalent Mn(1), and one Co(1) atom to form distorted OLi3Mn2Co octahedra that share corners with two equivalent O(5)Li3Mn2Co octahedra, corners with two equivalent O(6)Li3Mn2Co octahedra, corners with two equivalent O(4)Li5Co octahedra,  an edgeedge with one O(5)Li3Mn2Co octahedra, edges with two equivalent O(1)Li3MnCo2 octahedra, edges with two equivalent O(3)Li3MnCo2 octahedra, edges with three equivalent O(6)Li3Mn2Co octahedra, and edges with four equivalent O(2)Li4Co2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF card [CIF]
data_Li7Mn2(CoO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.899
_cell_length_b   8.323
_cell_length_c   9.840
_cell_angle_alpha   65.415
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   215.886
_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
  Li  Li0  1  0.000  0.338  0.321  1.0
  Li  Li1  1  0.000  0.662  0.679  1.0
  Li  Li2  1  0.000  0.000  0.000  1.0
  Li  Li3  1  0.500  0.812  0.845  1.0
  Li  Li4  1  0.500  0.188  0.155  1.0
  Li  Li5  1  0.500  0.500  0.500  1.0
  Li  Li6  1  0.000  0.500  0.000  1.0
  Mn  Mn7  1  0.000  0.166  0.669  1.0
  Mn  Mn8  1  0.000  0.834  0.331  1.0
  Co  Co9  1  0.500  0.648  0.159  1.0
  Co  Co10  1  0.500  0.000  0.500  1.0
  Co  Co11  1  0.500  0.352  0.841  1.0
  O  O12  1  0.000  0.935  0.659  1.0
  O  O13  1  0.000  0.248  0.986  1.0
  O  O14  1  0.000  0.608  0.324  1.0
  O  O15  1  0.500  0.427  0.173  1.0
  O  O16  1  0.500  0.762  0.481  1.0
  O  O17  1  0.500  0.093  0.812  1.0
  O  O18  1  0.000  0.752  0.014  1.0
  O  O19  1  0.000  0.065  0.341  1.0
  O  O20  1  0.000  0.392  0.676  1.0
  O  O21  1  0.500  0.238  0.519  1.0
  O  O22  1  0.500  0.573  0.827  1.0
  O  O23  1  0.500  0.907  0.188  1.0
[/CIF]
.