The material structure described by Li2MnSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pnma space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, corners with two equivalent Mn(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O4 trigonal pyramid. Mn(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form MnO4 trigonal pyramids that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Li(1)O4 tetrahedra and corners with four equivalent Mn(1)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2MnSi trigonal pyramids. is represented by the CIF file [CIF]
data_Li2MnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.087
_cell_length_b   6.405
_cell_length_c   10.896
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   355.023
_cell_formula_units_Z   4
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  0.207  0.997  0.668  1.0
  Li  Li1  1  0.293  0.997  0.168  1.0
  Li  Li2  1  0.207  0.503  0.668  1.0
  Li  Li3  1  0.293  0.503  0.168  1.0
  Li  Li4  1  0.707  0.497  0.832  1.0
  Li  Li5  1  0.793  0.497  0.332  1.0
  Li  Li6  1  0.793  0.003  0.332  1.0
  Li  Li7  1  0.707  0.003  0.832  1.0
  Mn  Mn8  1  0.791  0.250  0.579  1.0
  Mn  Mn9  1  0.709  0.250  0.079  1.0
  Mn  Mn10  1  0.291  0.750  0.921  1.0
  Mn  Mn11  1  0.209  0.750  0.421  1.0
  Si  Si12  1  0.195  0.250  0.909  1.0
  Si  Si13  1  0.305  0.250  0.409  1.0
  Si  Si14  1  0.695  0.750  0.591  1.0
  Si  Si15  1  0.805  0.750  0.091  1.0
  O  O16  1  0.306  0.040  0.838  1.0
  O  O17  1  0.194  0.040  0.338  1.0
  O  O18  1  0.869  0.250  0.904  1.0
  O  O19  1  0.214  0.250  0.555  1.0
  O  O20  1  0.286  0.250  0.055  1.0
  O  O21  1  0.631  0.250  0.404  1.0
  O  O22  1  0.306  0.460  0.838  1.0
  O  O23  1  0.194  0.460  0.338  1.0
  O  O24  1  0.806  0.540  0.662  1.0
  O  O25  1  0.694  0.540  0.162  1.0
  O  O26  1  0.714  0.750  0.945  1.0
  O  O27  1  0.369  0.750  0.596  1.0
  O  O28  1  0.786  0.750  0.445  1.0
  O  O29  1  0.131  0.750  0.096  1.0
  O  O30  1  0.806  0.960  0.662  1.0
  O  O31  1  0.694  0.960  0.162  1.0
[/CIF]
.
The material structure described by Li2MnSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pnma space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, corners with two equivalent Mn(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O4 trigonal pyramid. Mn(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form MnO4 trigonal pyramids that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Li(1)O4 tetrahedra and corners with four equivalent Mn(1)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2MnSi trigonal pyramids. is represented by the CIF file [CIF]
data_Li2MnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.087
_cell_length_b   6.405
_cell_length_c   10.896
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   355.023
_cell_formula_units_Z   4
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  0.207  0.997  0.668  1.0
  Li  Li1  1  0.293  0.997  0.168  1.0
  Li  Li2  1  0.207  0.503  0.668  1.0
  Li  Li3  1  0.293  0.503  0.168  1.0
  Li  Li4  1  0.707  0.497  0.832  1.0
  Li  Li5  1  0.793  0.497  0.332  1.0
  Li  Li6  1  0.793  0.003  0.332  1.0
  Li  Li7  1  0.707  0.003  0.832  1.0
  Mn  Mn8  1  0.791  0.250  0.579  1.0
  Mn  Mn9  1  0.709  0.250  0.079  1.0
  Mn  Mn10  1  0.291  0.750  0.921  1.0
  Mn  Mn11  1  0.209  0.750  0.421  1.0
  Si  Si12  1  0.195  0.250  0.909  1.0
  Si  Si13  1  0.305  0.250  0.409  1.0
  Si  Si14  1  0.695  0.750  0.591  1.0
  Si  Si15  1  0.805  0.750  0.091  1.0
  O  O16  1  0.306  0.040  0.838  1.0
  O  O17  1  0.194  0.040  0.338  1.0
  O  O18  1  0.869  0.250  0.904  1.0
  O  O19  1  0.214  0.250  0.555  1.0
  O  O20  1  0.286  0.250  0.055  1.0
  O  O21  1  0.631  0.250  0.404  1.0
  O  O22  1  0.306  0.460  0.838  1.0
  O  O23  1  0.194  0.460  0.338  1.0
  O  O24  1  0.806  0.540  0.662  1.0
  O  O25  1  0.694  0.540  0.162  1.0
  O  O26  1  0.714  0.750  0.945  1.0
  O  O27  1  0.369  0.750  0.596  1.0
  O  O28  1  0.786  0.750  0.445  1.0
  O  O29  1  0.131  0.750  0.096  1.0
  O  O30  1  0.806  0.960  0.662  1.0
  O  O31  1  0.694  0.960  0.162  1.0
[/CIF]
.