The structure described by Li2MnSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Mn(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Mn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Mn(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi trigonal pyramids. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. is represented by the CIF card [CIF]
data_Li2MnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.075
_cell_length_b   6.360
_cell_length_c   11.058
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   356.902
_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  0.706  0.870  0.595  1.0
  Li  Li1  1  0.196  0.117  0.674  1.0
  Li  Li2  1  0.696  0.617  0.826  1.0
  Li  Li3  1  0.206  0.370  0.905  1.0
  Li  Li4  1  0.794  0.870  0.095  1.0
  Li  Li5  1  0.304  0.117  0.174  1.0
  Li  Li6  1  0.804  0.617  0.326  1.0
  Li  Li7  1  0.294  0.370  0.405  1.0
  Mn  Mn8  1  0.701  0.363  0.586  1.0
  Mn  Mn9  1  0.201  0.863  0.914  1.0
  Mn  Mn10  1  0.799  0.363  0.086  1.0
  Mn  Mn11  1  0.299  0.863  0.414  1.0
  Si  Si12  1  0.190  0.618  0.664  1.0
  Si  Si13  1  0.690  0.118  0.836  1.0
  Si  Si14  1  0.310  0.618  0.164  1.0
  Si  Si15  1  0.810  0.118  0.336  1.0
  O  O16  1  0.302  0.835  0.599  1.0
  O  O17  1  0.284  0.404  0.590  1.0
  O  O18  1  0.865  0.625  0.665  1.0
  O  O19  1  0.803  0.111  0.695  1.0
  O  O20  1  0.303  0.611  0.805  1.0
  O  O21  1  0.365  0.125  0.835  1.0
  O  O22  1  0.784  0.904  0.910  1.0
  O  O23  1  0.802  0.335  0.901  1.0
  O  O24  1  0.198  0.835  0.099  1.0
  O  O25  1  0.216  0.404  0.090  1.0
  O  O26  1  0.635  0.625  0.165  1.0
  O  O27  1  0.697  0.111  0.195  1.0
  O  O28  1  0.197  0.611  0.305  1.0
  O  O29  1  0.135  0.125  0.335  1.0
  O  O30  1  0.716  0.904  0.410  1.0
  O  O31  1  0.698  0.335  0.401  1.0
[/CIF]
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The structure described by Li2MnSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Mn(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Mn(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Mn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Mn(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi trigonal pyramids. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. is represented by the CIF card [CIF]
data_Li2MnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.075
_cell_length_b   6.360
_cell_length_c   11.058
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   356.902
_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  0.706  0.870  0.595  1.0
  Li  Li1  1  0.196  0.117  0.674  1.0
  Li  Li2  1  0.696  0.617  0.826  1.0
  Li  Li3  1  0.206  0.370  0.905  1.0
  Li  Li4  1  0.794  0.870  0.095  1.0
  Li  Li5  1  0.304  0.117  0.174  1.0
  Li  Li6  1  0.804  0.617  0.326  1.0
  Li  Li7  1  0.294  0.370  0.405  1.0
  Mn  Mn8  1  0.701  0.363  0.586  1.0
  Mn  Mn9  1  0.201  0.863  0.914  1.0
  Mn  Mn10  1  0.799  0.363  0.086  1.0
  Mn  Mn11  1  0.299  0.863  0.414  1.0
  Si  Si12  1  0.190  0.618  0.664  1.0
  Si  Si13  1  0.690  0.118  0.836  1.0
  Si  Si14  1  0.310  0.618  0.164  1.0
  Si  Si15  1  0.810  0.118  0.336  1.0
  O  O16  1  0.302  0.835  0.599  1.0
  O  O17  1  0.284  0.404  0.590  1.0
  O  O18  1  0.865  0.625  0.665  1.0
  O  O19  1  0.803  0.111  0.695  1.0
  O  O20  1  0.303  0.611  0.805  1.0
  O  O21  1  0.365  0.125  0.835  1.0
  O  O22  1  0.784  0.904  0.910  1.0
  O  O23  1  0.802  0.335  0.901  1.0
  O  O24  1  0.198  0.835  0.099  1.0
  O  O25  1  0.216  0.404  0.090  1.0
  O  O26  1  0.635  0.625  0.165  1.0
  O  O27  1  0.697  0.111  0.195  1.0
  O  O28  1  0.197  0.611  0.305  1.0
  O  O29  1  0.135  0.125  0.335  1.0
  O  O30  1  0.716  0.904  0.410  1.0
  O  O31  1  0.698  0.335  0.401  1.0
[/CIF]
.