The crystal structure described by Li2Mn(PO4)2 crystallizes in the monoclinic Cc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-80°. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. Mn(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra and  a cornercorner with one Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-57°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra and corners with three equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-63°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Li(2), one Mn(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Li(2), and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Li(2), one Mn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Li(1), one Li(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Li2Mn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.030
_cell_length_b   5.030
_cell_length_c   13.709
_cell_angle_alpha   83.637
_cell_angle_beta   83.637
_cell_angle_gamma   55.028
_symmetry_Int_Tables_number   1
_cell_volume   282.036
_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  0.694  0.638  0.340  1.0
  Li  Li1  1  0.638  0.694  0.840  1.0
  Li  Li2  1  0.952  0.038  0.743  1.0
  Li  Li3  1  0.038  0.952  0.243  1.0
  Mn  Mn4  1  0.996  0.009  0.002  1.0
  Mn  Mn5  1  0.009  0.996  0.502  1.0
  P  P6  1  0.676  0.648  0.111  1.0
  P  P7  1  0.648  0.676  0.611  1.0
  P  P8  1  0.349  0.333  0.389  1.0
  P  P9  1  0.333  0.349  0.889  1.0
  O  O10  1  0.852  0.266  0.119  1.0
  O  O11  1  0.775  0.512  0.711  1.0
  O  O12  1  0.792  0.437  0.528  1.0
  O  O13  1  0.954  0.698  0.081  1.0
  O  O14  1  0.698  0.954  0.581  1.0
  O  O15  1  0.437  0.792  0.028  1.0
  O  O16  1  0.512  0.775  0.211  1.0
  O  O17  1  0.266  0.852  0.619  1.0
  O  O18  1  0.725  0.185  0.373  1.0
  O  O19  1  0.514  0.149  0.801  1.0
  O  O20  1  0.560  0.228  0.974  1.0
  O  O21  1  0.334  0.030  0.420  1.0
  O  O22  1  0.030  0.334  0.920  1.0
  O  O23  1  0.228  0.560  0.474  1.0
  O  O24  1  0.149  0.514  0.301  1.0
  O  O25  1  0.185  0.725  0.873  1.0
[/CIF]
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The crystal structure described by Li2Mn(PO4)2 crystallizes in the monoclinic Cc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 61-80°. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. Mn(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra and  a cornercorner with one Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-57°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra and corners with three equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-63°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Li(2), one Mn(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Li(2), and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Li(2), one Mn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Li(1), one Li(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Li2Mn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.030
_cell_length_b   5.030
_cell_length_c   13.709
_cell_angle_alpha   83.637
_cell_angle_beta   83.637
_cell_angle_gamma   55.028
_symmetry_Int_Tables_number   1
_cell_volume   282.036
_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  0.694  0.638  0.340  1.0
  Li  Li1  1  0.638  0.694  0.840  1.0
  Li  Li2  1  0.952  0.038  0.743  1.0
  Li  Li3  1  0.038  0.952  0.243  1.0
  Mn  Mn4  1  0.996  0.009  0.002  1.0
  Mn  Mn5  1  0.009  0.996  0.502  1.0
  P  P6  1  0.676  0.648  0.111  1.0
  P  P7  1  0.648  0.676  0.611  1.0
  P  P8  1  0.349  0.333  0.389  1.0
  P  P9  1  0.333  0.349  0.889  1.0
  O  O10  1  0.852  0.266  0.119  1.0
  O  O11  1  0.775  0.512  0.711  1.0
  O  O12  1  0.792  0.437  0.528  1.0
  O  O13  1  0.954  0.698  0.081  1.0
  O  O14  1  0.698  0.954  0.581  1.0
  O  O15  1  0.437  0.792  0.028  1.0
  O  O16  1  0.512  0.775  0.211  1.0
  O  O17  1  0.266  0.852  0.619  1.0
  O  O18  1  0.725  0.185  0.373  1.0
  O  O19  1  0.514  0.149  0.801  1.0
  O  O20  1  0.560  0.228  0.974  1.0
  O  O21  1  0.334  0.030  0.420  1.0
  O  O22  1  0.030  0.334  0.920  1.0
  O  O23  1  0.228  0.560  0.474  1.0
  O  O24  1  0.149  0.514  0.301  1.0
  O  O25  1  0.185  0.725  0.873  1.0
[/CIF]
.