The material described by Li3Mn2(SiO4)2 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(13), one O(16), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(4)O5 trigonal bipyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. In the second Li site, Li(2) is bonded to one O(14), one O(15), one O(2), and one O(4) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one O(10), one O(11), one O(5), and one O(8) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. In the fourth Li site, Li(4) is bonded to one O(12), one O(6), one O(7), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the fifth Li site, Li(5) is bonded to one O(1), one O(11), one O(14), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the sixth Li site, Li(6) is bonded to one O(12), one O(13), one O(2), and one O(8) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(15), one O(16), and one O(6) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Si(4)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(14), one O(4), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the third Mn site, Mn(3) is bonded to one O(11), one O(16), one O(2), and one O(5) atom to form MnO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid, and corners with two equivalent Li(3)O4 trigonal pyramids. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(13), one O(3), one O(7), and one O(8) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Si(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. In the second Si site, Si(2) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the third Si site, Si(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the fourth Si site, Si(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(5), one Mn(1), and one Si(2) atom to form distorted corner-sharing OLi2MnSi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), one Li(6), one Mn(3), and one Si(1) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra, corners with two equivalent O(8)Li2Mn2Si trigonal bipyramids, and  a cornercorner with one O(11)Li2MnSi trigonal pyramid. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(2), one Mn(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(3), one Mn(3), and one Si(2) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Li(4), one Mn(1), and one Si(1) atom. In the seventh O site, O(7) is bonded to one Li(4), one Li(5), one Mn(4), and one Si(2) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid,  a cornercorner with one O(11)Li2MnSi trigonal pyramid, and corners with two equivalent O(1)Li2MnSi trigonal pyramids. In the eighth O site, O(8) is bonded to one Li(3), one Li(6), one Mn(2), one Mn(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2Mn2Si trigonal bipyramids. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Li(4), one Mn(2), and one Si(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Li(3), one Mn(4), and one Si(4) atom. In the eleventh O site, O(11) is bonded to one Li(3), one Li(5), one Mn(3), and one Si(3) atom to form distorted OLi2MnSi trigonal pyramids that share  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid, and  a cornercorner with one O(1)Li2MnSi trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(4), one Li(6), one Mn(1), and one Si(4) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid, and  a cornercorner with one O(1)Li2MnSi trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(1), one Li(6), one Mn(4), and one Si(3) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(1)Li2MnSi trigonal pyramid,  a cornercorner with one O(11)Li2MnSi trigonal pyramid, and  an edgeedge with one O(8)Li2Mn2Si trigonal bipyramid. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(5), one Mn(2), and one Si(4) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid,  a cornercorner with one O(1)Li2MnSi trigonal pyramid, and  a cornercorner with one O(11)Li2MnSi trigonal pyramid. In the fifteenth O site, O(15) is bonded in a trigonal non-coplanar geometry to one Li(2), one Mn(1), and one Si(3) atom. In the sixteenth O site, O(16) is bonded in a see-saw-like geometry to one Li(1), one Mn(1), one Mn(3), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Mn2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.735
_cell_length_b   7.292
_cell_length_c   7.219
_cell_angle_alpha   97.594
_cell_angle_beta   89.725
_cell_angle_gamma   88.401
_symmetry_Int_Tables_number   1
_cell_volume   351.254
_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  0.981  0.655  0.855  1.0
  Li  Li1  1  0.009  0.154  0.323  1.0
  Li  Li2  1  0.513  0.595  0.385  1.0
  Li  Li3  1  0.481  0.099  0.918  1.0
  Li  Li4  1  0.770  0.810  0.167  1.0
  Li  Li5  1  0.766  0.335  0.671  1.0
  Mn  Mn6  1  0.002  0.052  0.877  1.0
  Mn  Mn7  1  0.511  0.176  0.349  1.0
  Mn  Mn8  1  0.038  0.602  0.424  1.0
  Mn  Mn9  1  0.477  0.632  0.800  1.0
  Si  Si10  1  0.236  0.344  0.687  1.0
  Si  Si11  1  0.253  0.841  0.156  1.0
  Si  Si12  1  0.759  0.403  0.081  1.0
  Si  Si13  1  0.753  0.921  0.598  1.0
  O  O14  1  0.033  0.855  0.049  1.0
  O  O15  1  0.042  0.359  0.550  1.0
  O  O16  1  0.230  0.527  0.849  1.0
  O  O17  1  0.265  0.038  0.290  1.0
  O  O18  1  0.270  0.668  0.275  1.0
  O  O19  1  0.247  0.149  0.771  1.0
  O  O20  1  0.444  0.833  0.002  1.0
  O  O21  1  0.454  0.393  0.585  1.0
  O  O22  1  0.559  0.292  0.117  1.0
  O  O23  1  0.586  0.766  0.609  1.0
  O  O24  1  0.786  0.566  0.262  1.0
  O  O25  1  0.732  0.098  0.765  1.0
  O  O26  1  0.745  0.511  0.894  1.0
  O  O27  1  0.756  1.000  0.395  1.0
  O  O28  1  0.954  0.253  0.071  1.0
  O  O29  1  0.972  0.833  0.658  1.0
[/CIF]
.
The material described by Li3Mn2(SiO4)2 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(13), one O(16), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(4)O5 trigonal bipyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. In the second Li site, Li(2) is bonded to one O(14), one O(15), one O(2), and one O(4) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one O(10), one O(11), one O(5), and one O(8) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. In the fourth Li site, Li(4) is bonded to one O(12), one O(6), one O(7), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the fifth Li site, Li(5) is bonded to one O(1), one O(11), one O(14), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the sixth Li site, Li(6) is bonded to one O(12), one O(13), one O(2), and one O(8) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(15), one O(16), and one O(6) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Si(4)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(14), one O(4), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the third Mn site, Mn(3) is bonded to one O(11), one O(16), one O(2), and one O(5) atom to form MnO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid, and corners with two equivalent Li(3)O4 trigonal pyramids. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(13), one O(3), one O(7), and one O(8) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Si(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. In the second Si site, Si(2) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the third Si site, Si(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O4 trigonal pyramid. In the fourth Si site, Si(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  a cornercorner with one Li(3)O4 trigonal pyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(5), one Mn(1), and one Si(2) atom to form distorted corner-sharing OLi2MnSi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), one Li(6), one Mn(3), and one Si(1) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra, corners with two equivalent O(8)Li2Mn2Si trigonal bipyramids, and  a cornercorner with one O(11)Li2MnSi trigonal pyramid. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(2), one Mn(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(3), one Mn(3), and one Si(2) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Li(4), one Mn(1), and one Si(1) atom. In the seventh O site, O(7) is bonded to one Li(4), one Li(5), one Mn(4), and one Si(2) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid,  a cornercorner with one O(11)Li2MnSi trigonal pyramid, and corners with two equivalent O(1)Li2MnSi trigonal pyramids. In the eighth O site, O(8) is bonded to one Li(3), one Li(6), one Mn(2), one Mn(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2Mn2Si trigonal bipyramids. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Li(4), one Mn(2), and one Si(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Li(3), one Mn(4), and one Si(4) atom. In the eleventh O site, O(11) is bonded to one Li(3), one Li(5), one Mn(3), and one Si(3) atom to form distorted OLi2MnSi trigonal pyramids that share  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid, and  a cornercorner with one O(1)Li2MnSi trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(4), one Li(6), one Mn(1), and one Si(4) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(13)Li2MnSi tetrahedra,  a cornercorner with one O(14)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid, and  a cornercorner with one O(1)Li2MnSi trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(1), one Li(6), one Mn(4), and one Si(3) atom to form distorted OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(1)Li2MnSi trigonal pyramid,  a cornercorner with one O(11)Li2MnSi trigonal pyramid, and  an edgeedge with one O(8)Li2Mn2Si trigonal bipyramid. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(5), one Mn(2), and one Si(4) atom to form OLi2MnSi tetrahedra that share  a cornercorner with one O(12)Li2MnSi tetrahedra,  a cornercorner with one O(2)Li2MnSi tetrahedra,  a cornercorner with one O(7)Li2MnSi tetrahedra,  a cornercorner with one O(8)Li2Mn2Si trigonal bipyramid,  a cornercorner with one O(1)Li2MnSi trigonal pyramid, and  a cornercorner with one O(11)Li2MnSi trigonal pyramid. In the fifteenth O site, O(15) is bonded in a trigonal non-coplanar geometry to one Li(2), one Mn(1), and one Si(3) atom. In the sixteenth O site, O(16) is bonded in a see-saw-like geometry to one Li(1), one Mn(1), one Mn(3), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Mn2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.735
_cell_length_b   7.292
_cell_length_c   7.219
_cell_angle_alpha   97.594
_cell_angle_beta   89.725
_cell_angle_gamma   88.401
_symmetry_Int_Tables_number   1
_cell_volume   351.254
_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  0.981  0.655  0.855  1.0
  Li  Li1  1  0.009  0.154  0.323  1.0
  Li  Li2  1  0.513  0.595  0.385  1.0
  Li  Li3  1  0.481  0.099  0.918  1.0
  Li  Li4  1  0.770  0.810  0.167  1.0
  Li  Li5  1  0.766  0.335  0.671  1.0
  Mn  Mn6  1  0.002  0.052  0.877  1.0
  Mn  Mn7  1  0.511  0.176  0.349  1.0
  Mn  Mn8  1  0.038  0.602  0.424  1.0
  Mn  Mn9  1  0.477  0.632  0.800  1.0
  Si  Si10  1  0.236  0.344  0.687  1.0
  Si  Si11  1  0.253  0.841  0.156  1.0
  Si  Si12  1  0.759  0.403  0.081  1.0
  Si  Si13  1  0.753  0.921  0.598  1.0
  O  O14  1  0.033  0.855  0.049  1.0
  O  O15  1  0.042  0.359  0.550  1.0
  O  O16  1  0.230  0.527  0.849  1.0
  O  O17  1  0.265  0.038  0.290  1.0
  O  O18  1  0.270  0.668  0.275  1.0
  O  O19  1  0.247  0.149  0.771  1.0
  O  O20  1  0.444  0.833  0.002  1.0
  O  O21  1  0.454  0.393  0.585  1.0
  O  O22  1  0.559  0.292  0.117  1.0
  O  O23  1  0.586  0.766  0.609  1.0
  O  O24  1  0.786  0.566  0.262  1.0
  O  O25  1  0.732  0.098  0.765  1.0
  O  O26  1  0.745  0.511  0.894  1.0
  O  O27  1  0.756  1.000  0.395  1.0
  O  O28  1  0.954  0.253  0.071  1.0
  O  O29  1  0.972  0.833  0.658  1.0
[/CIF]
.