The compound described by Li2Mn3Si3O10 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-70°. In the second Mn site, Mn(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-70°. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. In the second Si site, Si(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(2) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(1)Li2MnSi tetrahedra, corners with three equivalent O(3)LiMn2Si tetrahedra, and  an edgeedge with one O(1)Li2MnSi tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(1), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded to one Li(1), one Mn(1), one Mn(2), and one Si(1) atom to form distorted OLiMn2Si tetrahedra that share  a cornercorner with one O(3)LiMn2Si tetrahedra and corners with three equivalent O(1)Li2MnSi tetrahedra. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(1), one Mn(1), one Mn(2), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), two equivalent Mn(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Li2Mn3Si3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.421
_cell_length_b   8.421
_cell_length_c   10.613
_cell_angle_alpha   86.873
_cell_angle_beta   86.873
_cell_angle_gamma   33.927
_symmetry_Int_Tables_number   1
_cell_volume   419.345
_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  0.250  0.865  0.025  1.0
  Li  Li1  1  0.865  0.250  0.525  1.0
  Li  Li2  1  0.135  0.750  0.475  1.0
  Li  Li3  1  0.750  0.135  0.975  1.0
  Mn  Mn4  1  0.375  0.929  0.293  1.0
  Mn  Mn5  1  0.929  0.375  0.793  1.0
  Mn  Mn6  1  0.500  0.000  0.000  1.0
  Mn  Mn7  1  0.000  0.500  0.500  1.0
  Mn  Mn8  1  0.071  0.625  0.207  1.0
  Mn  Mn9  1  0.625  0.071  0.707  1.0
  Si  Si10  1  0.836  0.471  0.099  1.0
  Si  Si11  1  0.471  0.836  0.599  1.0
  Si  Si12  1  0.529  0.164  0.401  1.0
  Si  Si13  1  0.164  0.529  0.901  1.0
  Si  Si14  1  0.799  0.201  0.250  1.0
  Si  Si15  1  0.201  0.799  0.750  1.0
  O  O16  1  0.020  0.063  0.359  1.0
  O  O17  1  0.643  0.493  0.184  1.0
  O  O18  1  0.063  0.020  0.859  1.0
  O  O19  1  0.493  0.643  0.684  1.0
  O  O20  1  0.167  0.139  0.103  1.0
  O  O21  1  0.606  0.688  0.460  1.0
  O  O22  1  0.139  0.167  0.603  1.0
  O  O23  1  0.688  0.606  0.960  1.0
  O  O24  1  0.761  0.701  0.165  1.0
  O  O25  1  0.701  0.761  0.665  1.0
  O  O26  1  0.299  0.239  0.335  1.0
  O  O27  1  0.239  0.299  0.835  1.0
  O  O28  1  0.312  0.394  0.040  1.0
  O  O29  1  0.861  0.833  0.397  1.0
  O  O30  1  0.394  0.312  0.540  1.0
  O  O31  1  0.833  0.861  0.897  1.0
  O  O32  1  0.507  0.357  0.316  1.0
  O  O33  1  0.937  0.980  0.141  1.0
  O  O34  1  0.357  0.507  0.816  1.0
  O  O35  1  0.980  0.937  0.641  1.0
[/CIF]
.
The compound described by Li2Mn3Si3O10 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-70°. In the second Mn site, Mn(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-70°. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. In the second Si site, Si(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(2) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(1)Li2MnSi tetrahedra, corners with three equivalent O(3)LiMn2Si tetrahedra, and  an edgeedge with one O(1)Li2MnSi tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(1), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded to one Li(1), one Mn(1), one Mn(2), and one Si(1) atom to form distorted OLiMn2Si tetrahedra that share  a cornercorner with one O(3)LiMn2Si tetrahedra and corners with three equivalent O(1)Li2MnSi tetrahedra. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(1), one Mn(1), one Mn(2), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), two equivalent Mn(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Li2Mn3Si3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.421
_cell_length_b   8.421
_cell_length_c   10.613
_cell_angle_alpha   86.873
_cell_angle_beta   86.873
_cell_angle_gamma   33.927
_symmetry_Int_Tables_number   1
_cell_volume   419.345
_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  0.250  0.865  0.025  1.0
  Li  Li1  1  0.865  0.250  0.525  1.0
  Li  Li2  1  0.135  0.750  0.475  1.0
  Li  Li3  1  0.750  0.135  0.975  1.0
  Mn  Mn4  1  0.375  0.929  0.293  1.0
  Mn  Mn5  1  0.929  0.375  0.793  1.0
  Mn  Mn6  1  0.500  0.000  0.000  1.0
  Mn  Mn7  1  0.000  0.500  0.500  1.0
  Mn  Mn8  1  0.071  0.625  0.207  1.0
  Mn  Mn9  1  0.625  0.071  0.707  1.0
  Si  Si10  1  0.836  0.471  0.099  1.0
  Si  Si11  1  0.471  0.836  0.599  1.0
  Si  Si12  1  0.529  0.164  0.401  1.0
  Si  Si13  1  0.164  0.529  0.901  1.0
  Si  Si14  1  0.799  0.201  0.250  1.0
  Si  Si15  1  0.201  0.799  0.750  1.0
  O  O16  1  0.020  0.063  0.359  1.0
  O  O17  1  0.643  0.493  0.184  1.0
  O  O18  1  0.063  0.020  0.859  1.0
  O  O19  1  0.493  0.643  0.684  1.0
  O  O20  1  0.167  0.139  0.103  1.0
  O  O21  1  0.606  0.688  0.460  1.0
  O  O22  1  0.139  0.167  0.603  1.0
  O  O23  1  0.688  0.606  0.960  1.0
  O  O24  1  0.761  0.701  0.165  1.0
  O  O25  1  0.701  0.761  0.665  1.0
  O  O26  1  0.299  0.239  0.335  1.0
  O  O27  1  0.239  0.299  0.835  1.0
  O  O28  1  0.312  0.394  0.040  1.0
  O  O29  1  0.861  0.833  0.397  1.0
  O  O30  1  0.394  0.312  0.540  1.0
  O  O31  1  0.833  0.861  0.897  1.0
  O  O32  1  0.507  0.357  0.316  1.0
  O  O33  1  0.937  0.980  0.141  1.0
  O  O34  1  0.357  0.507  0.816  1.0
  O  O35  1  0.980  0.937  0.641  1.0
[/CIF]
.