The structure described by Li2Mn2Si4O11 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 2-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(9) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 2-coordinate geometry to one O(1), one O(11), and one O(9) atom. In the second Mn site, Mn(2) is bonded in a 2-coordinate geometry to one O(3), one O(8), and one O(9) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Si site, Si(2) is bonded to one O(10), one O(11), one O(4), and one O(5) atom to form distorted corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form distorted corner-sharing SiO4 tetrahedra. In the fourth Si site, Si(4) is bonded in a 4-coordinate geometry to one O(10), one O(6), one O(7), and one O(9) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Li(1), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Si(1), and one Si(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(2), one Mn(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(2), one Si(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Si(3) and one Si(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1) and one Si(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one Si(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(2), one Mn(1), one Mn(2), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Si(2) and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Mn(1) and one Si(2) atom. is represented by the CIF card [CIF]
data_Li2Mn2Si4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.919
_cell_length_b   7.589
_cell_length_c   7.047
_cell_angle_alpha   104.560
_cell_angle_beta   100.975
_cell_angle_gamma   99.494
_symmetry_Int_Tables_number   1
_cell_volume   441.742
_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  0.610  0.197  0.794  1.0
  Li  Li1  1  0.142  0.148  0.752  1.0
  Li  Li2  1  0.858  0.852  0.248  1.0
  Li  Li3  1  0.390  0.803  0.206  1.0
  Mn  Mn4  1  0.882  0.388  0.624  1.0
  Mn  Mn5  1  0.370  0.397  0.618  1.0
  Mn  Mn6  1  0.630  0.603  0.382  1.0
  Mn  Mn7  1  0.118  0.612  0.376  1.0
  Si  Si8  1  0.240  0.033  0.389  1.0
  Si  Si9  1  0.958  0.231  0.224  1.0
  Si  Si10  1  0.520  0.224  0.222  1.0
  Si  Si11  1  0.768  0.598  0.973  1.0
  Si  Si12  1  0.232  0.402  0.027  1.0
  Si  Si13  1  0.480  0.776  0.778  1.0
  Si  Si14  1  0.042  0.769  0.776  1.0
  Si  Si15  1  0.760  0.967  0.611  1.0
  O  O16  1  0.816  0.151  0.622  1.0
  O  O17  1  0.398  0.060  0.259  1.0
  O  O18  1  0.323  0.152  0.594  1.0
  O  O19  1  0.026  0.069  0.260  1.0
  O  O20  1  0.710  0.182  0.152  1.0
  O  O21  1  0.382  0.274  0.040  1.0
  O  O22  1  0.678  0.438  0.812  1.0
  O  O23  1  0.581  0.365  0.407  1.0
  O  O24  1  0.185  0.415  0.811  1.0
  O  O25  1  0.023  0.293  0.050  1.0
  O  O26  1  0.060  0.369  0.412  1.0
  O  O27  1  0.940  0.631  0.588  1.0
  O  O28  1  0.977  0.707  0.950  1.0
  O  O29  1  0.815  0.585  0.189  1.0
  O  O30  1  0.419  0.635  0.593  1.0
  O  O31  1  0.322  0.562  0.188  1.0
  O  O32  1  0.618  0.726  0.960  1.0
  O  O33  1  0.290  0.818  0.848  1.0
  O  O34  1  0.974  0.931  0.740  1.0
  O  O35  1  0.677  0.848  0.406  1.0
  O  O36  1  0.602  0.940  0.741  1.0
  O  O37  1  0.184  0.849  0.378  1.0
[/CIF]
.
The structure described by Li2Mn2Si4O11 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 2-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(9) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 2-coordinate geometry to one O(1), one O(11), and one O(9) atom. In the second Mn site, Mn(2) is bonded in a 2-coordinate geometry to one O(3), one O(8), and one O(9) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Si site, Si(2) is bonded to one O(10), one O(11), one O(4), and one O(5) atom to form distorted corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form distorted corner-sharing SiO4 tetrahedra. In the fourth Si site, Si(4) is bonded in a 4-coordinate geometry to one O(10), one O(6), one O(7), and one O(9) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Li(1), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Si(1), and one Si(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(2), one Mn(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(2), one Si(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Si(3) and one Si(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1) and one Si(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one Si(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(2), one Mn(1), one Mn(2), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Si(2) and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Mn(1) and one Si(2) atom. is represented by the CIF card [CIF]
data_Li2Mn2Si4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.919
_cell_length_b   7.589
_cell_length_c   7.047
_cell_angle_alpha   104.560
_cell_angle_beta   100.975
_cell_angle_gamma   99.494
_symmetry_Int_Tables_number   1
_cell_volume   441.742
_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  0.610  0.197  0.794  1.0
  Li  Li1  1  0.142  0.148  0.752  1.0
  Li  Li2  1  0.858  0.852  0.248  1.0
  Li  Li3  1  0.390  0.803  0.206  1.0
  Mn  Mn4  1  0.882  0.388  0.624  1.0
  Mn  Mn5  1  0.370  0.397  0.618  1.0
  Mn  Mn6  1  0.630  0.603  0.382  1.0
  Mn  Mn7  1  0.118  0.612  0.376  1.0
  Si  Si8  1  0.240  0.033  0.389  1.0
  Si  Si9  1  0.958  0.231  0.224  1.0
  Si  Si10  1  0.520  0.224  0.222  1.0
  Si  Si11  1  0.768  0.598  0.973  1.0
  Si  Si12  1  0.232  0.402  0.027  1.0
  Si  Si13  1  0.480  0.776  0.778  1.0
  Si  Si14  1  0.042  0.769  0.776  1.0
  Si  Si15  1  0.760  0.967  0.611  1.0
  O  O16  1  0.816  0.151  0.622  1.0
  O  O17  1  0.398  0.060  0.259  1.0
  O  O18  1  0.323  0.152  0.594  1.0
  O  O19  1  0.026  0.069  0.260  1.0
  O  O20  1  0.710  0.182  0.152  1.0
  O  O21  1  0.382  0.274  0.040  1.0
  O  O22  1  0.678  0.438  0.812  1.0
  O  O23  1  0.581  0.365  0.407  1.0
  O  O24  1  0.185  0.415  0.811  1.0
  O  O25  1  0.023  0.293  0.050  1.0
  O  O26  1  0.060  0.369  0.412  1.0
  O  O27  1  0.940  0.631  0.588  1.0
  O  O28  1  0.977  0.707  0.950  1.0
  O  O29  1  0.815  0.585  0.189  1.0
  O  O30  1  0.419  0.635  0.593  1.0
  O  O31  1  0.322  0.562  0.188  1.0
  O  O32  1  0.618  0.726  0.960  1.0
  O  O33  1  0.290  0.818  0.848  1.0
  O  O34  1  0.974  0.931  0.740  1.0
  O  O35  1  0.677  0.848  0.406  1.0
  O  O36  1  0.602  0.940  0.741  1.0
  O  O37  1  0.184  0.849  0.378  1.0
[/CIF]
.