The crystal structure described by Li2Mn3(SeO3)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(5), and one O(8) atom. In the second Li site, Li(2) is bonded to one O(6), one O(9), and two equivalent O(10) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-71°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3), two equivalent O(7), and two equivalent O(8) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 64°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra and edges with two equivalent Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(11), one O(2), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(4), and one O(6) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(5) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(12), one O(8), and one O(9) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one O(10), one O(11), and one O(7) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(3), one Mn(4), and one Se(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Mn(1) and one Se(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(3), one Mn(4), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(3), and one Se(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(2), one Mn(4), and one Se(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Se(4) atom. In the eighth O site, O(8) is bonded to one Li(1), one Mn(1), one Mn(3), and one Se(3) atom to form a mixture of distorted edge and corner-sharing OLiMn2Se tetrahedra. In the ninth O site, O(9) is bonded to one Li(2), one Mn(2), one Mn(3), and one Se(3) atom to form a mixture of distorted edge and corner-sharing OLiMn2Se tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Mn(4), and one Se(4) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(3) atom. is represented by the CIF file [CIF]
data_Li2Mn3(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.700
_cell_length_b   8.548
_cell_length_c   10.804
_cell_angle_alpha   105.847
_cell_angle_beta   88.118
_cell_angle_gamma   116.028
_symmetry_Int_Tables_number   1
_cell_volume   611.587
_cell_formula_units_Z   2
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  0.751  0.544  0.930  1.0
  Li  Li1  1  0.648  0.545  0.416  1.0
  Li  Li2  1  0.352  0.455  0.584  1.0
  Li  Li3  1  0.249  0.456  0.070  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.000  0.000  0.500  1.0
  Mn  Mn6  1  0.939  0.284  0.783  1.0
  Mn  Mn7  1  0.945  0.626  0.673  1.0
  Mn  Mn8  1  0.055  0.374  0.327  1.0
  Mn  Mn9  1  0.061  0.716  0.217  1.0
  Se  Se10  1  0.712  0.212  0.479  1.0
  Se  Se11  1  0.727  0.246  0.067  1.0
  Se  Se12  1  0.677  0.741  0.204  1.0
  Se  Se13  1  0.680  0.818  0.730  1.0
  Se  Se14  1  0.320  0.182  0.270  1.0
  Se  Se15  1  0.323  0.259  0.796  1.0
  Se  Se16  1  0.273  0.754  0.933  1.0
  Se  Se17  1  0.288  0.788  0.521  1.0
  O  O18  1  0.902  0.161  0.427  1.0
  O  O19  1  0.958  0.410  0.152  1.0
  O  O20  1  0.751  0.049  0.025  1.0
  O  O21  1  0.786  0.336  0.641  1.0
  O  O22  1  0.741  0.299  0.923  1.0
  O  O23  1  0.778  0.384  0.407  1.0
  O  O24  1  0.868  0.814  0.813  1.0
  O  O25  1  0.857  0.750  0.096  1.0
  O  O26  1  0.808  0.740  0.336  1.0
  O  O27  1  0.643  0.629  0.604  1.0
  O  O28  1  0.799  0.994  0.659  1.0
  O  O29  1  0.490  0.478  0.847  1.0
  O  O30  1  0.510  0.522  0.153  1.0
  O  O31  1  0.201  0.006  0.341  1.0
  O  O32  1  0.357  0.371  0.396  1.0
  O  O33  1  0.192  0.260  0.664  1.0
  O  O34  1  0.143  0.250  0.904  1.0
  O  O35  1  0.132  0.186  0.187  1.0
  O  O36  1  0.222  0.616  0.593  1.0
  O  O37  1  0.259  0.701  0.077  1.0
  O  O38  1  0.214  0.664  0.359  1.0
  O  O39  1  0.249  0.951  0.975  1.0
  O  O40  1  0.042  0.590  0.848  1.0
  O  O41  1  0.098  0.839  0.573  1.0
[/CIF]
.
The crystal structure described by Li2Mn3(SeO3)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(5), and one O(8) atom. In the second Li site, Li(2) is bonded to one O(6), one O(9), and two equivalent O(10) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-71°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3), two equivalent O(7), and two equivalent O(8) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 64°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(11), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra and edges with two equivalent Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(11), one O(2), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(4), and one O(6) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(5) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(12), one O(8), and one O(9) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one O(10), one O(11), and one O(7) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(3), one Mn(4), and one Se(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Mn(1) and one Se(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(3), one Mn(4), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(3), and one Se(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(2), one Mn(4), and one Se(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Se(4) atom. In the eighth O site, O(8) is bonded to one Li(1), one Mn(1), one Mn(3), and one Se(3) atom to form a mixture of distorted edge and corner-sharing OLiMn2Se tetrahedra. In the ninth O site, O(9) is bonded to one Li(2), one Mn(2), one Mn(3), and one Se(3) atom to form a mixture of distorted edge and corner-sharing OLiMn2Se tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Mn(4), and one Se(4) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Se(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Li(1) and one Se(3) atom. is represented by the CIF file [CIF]
data_Li2Mn3(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.700
_cell_length_b   8.548
_cell_length_c   10.804
_cell_angle_alpha   105.847
_cell_angle_beta   88.118
_cell_angle_gamma   116.028
_symmetry_Int_Tables_number   1
_cell_volume   611.587
_cell_formula_units_Z   2
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  0.751  0.544  0.930  1.0
  Li  Li1  1  0.648  0.545  0.416  1.0
  Li  Li2  1  0.352  0.455  0.584  1.0
  Li  Li3  1  0.249  0.456  0.070  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.000  0.000  0.500  1.0
  Mn  Mn6  1  0.939  0.284  0.783  1.0
  Mn  Mn7  1  0.945  0.626  0.673  1.0
  Mn  Mn8  1  0.055  0.374  0.327  1.0
  Mn  Mn9  1  0.061  0.716  0.217  1.0
  Se  Se10  1  0.712  0.212  0.479  1.0
  Se  Se11  1  0.727  0.246  0.067  1.0
  Se  Se12  1  0.677  0.741  0.204  1.0
  Se  Se13  1  0.680  0.818  0.730  1.0
  Se  Se14  1  0.320  0.182  0.270  1.0
  Se  Se15  1  0.323  0.259  0.796  1.0
  Se  Se16  1  0.273  0.754  0.933  1.0
  Se  Se17  1  0.288  0.788  0.521  1.0
  O  O18  1  0.902  0.161  0.427  1.0
  O  O19  1  0.958  0.410  0.152  1.0
  O  O20  1  0.751  0.049  0.025  1.0
  O  O21  1  0.786  0.336  0.641  1.0
  O  O22  1  0.741  0.299  0.923  1.0
  O  O23  1  0.778  0.384  0.407  1.0
  O  O24  1  0.868  0.814  0.813  1.0
  O  O25  1  0.857  0.750  0.096  1.0
  O  O26  1  0.808  0.740  0.336  1.0
  O  O27  1  0.643  0.629  0.604  1.0
  O  O28  1  0.799  0.994  0.659  1.0
  O  O29  1  0.490  0.478  0.847  1.0
  O  O30  1  0.510  0.522  0.153  1.0
  O  O31  1  0.201  0.006  0.341  1.0
  O  O32  1  0.357  0.371  0.396  1.0
  O  O33  1  0.192  0.260  0.664  1.0
  O  O34  1  0.143  0.250  0.904  1.0
  O  O35  1  0.132  0.186  0.187  1.0
  O  O36  1  0.222  0.616  0.593  1.0
  O  O37  1  0.259  0.701  0.077  1.0
  O  O38  1  0.214  0.664  0.359  1.0
  O  O39  1  0.249  0.951  0.975  1.0
  O  O40  1  0.042  0.590  0.848  1.0
  O  O41  1  0.098  0.839  0.573  1.0
[/CIF]
.