The material structure described by Li1MnSiO4 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 4-coordinate geometry to one O(2), one O(4), and two equivalent O(1) atoms. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), and one O(8) atom. 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(6), and one O(8) atom to form distorted MnO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 pentagonal pyramids, corners with two equivalent Si(2)O4 tetrahedra, and corners with three equivalent Si(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(4), one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form distorted MnO6 pentagonal pyramids that share  a cornercorner with one Si(1)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Mn(2)O6 pentagonal pyramid, and  an edgeedge with one Si(2)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, 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  a cornercorner with one Mn(2)O6 pentagonal pyramid and corners with three equivalent Mn(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(2)O6 pentagonal pyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Li(1), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted tetrahedral geometry to one Li(1), one Li(2), one Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(2), one Mn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(2) and one Si(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Li(2), one Mn(1), one Mn(2), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiMnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.712
_cell_length_b   6.196
_cell_length_c   9.277
_cell_angle_alpha   78.051
_cell_angle_beta   81.181
_cell_angle_gamma   76.498
_symmetry_Int_Tables_number   1
_cell_volume   310.440
_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  0.681  0.363  0.914  1.0
  Li  Li1  1  0.194  0.442  0.772  1.0
  Li  Li2  1  0.806  0.558  0.228  1.0
  Li  Li3  1  0.319  0.637  0.086  1.0
  Mn  Mn4  1  0.306  0.934  0.780  1.0
  Mn  Mn5  1  0.781  0.161  0.589  1.0
  Mn  Mn6  1  0.219  0.839  0.411  1.0
  Mn  Mn7  1  0.694  0.066  0.220  1.0
  Si  Si8  1  0.815  0.840  0.908  1.0
  Si  Si9  1  0.679  0.710  0.538  1.0
  Si  Si10  1  0.321  0.290  0.462  1.0
  Si  Si11  1  0.185  0.160  0.092  1.0
  O  O12  1  0.611  0.704  0.885  1.0
  O  O13  1  0.103  0.707  0.877  1.0
  O  O14  1  0.225  0.135  0.917  1.0
  O  O15  1  0.787  0.093  0.803  1.0
  O  O16  1  0.866  0.852  0.573  1.0
  O  O17  1  0.390  0.778  0.609  1.0
  O  O18  1  0.791  0.452  0.602  1.0
  O  O19  1  0.357  0.225  0.641  1.0
  O  O20  1  0.643  0.775  0.359  1.0
  O  O21  1  0.209  0.548  0.398  1.0
  O  O22  1  0.610  0.222  0.391  1.0
  O  O23  1  0.134  0.148  0.427  1.0
  O  O24  1  0.213  0.907  0.197  1.0
  O  O25  1  0.775  0.865  0.083  1.0
  O  O26  1  0.897  0.293  0.123  1.0
  O  O27  1  0.389  0.296  0.115  1.0
[/CIF]
.
The material structure described by Li1MnSiO4 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 4-coordinate geometry to one O(2), one O(4), and two equivalent O(1) atoms. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), and one O(8) atom. 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(6), and one O(8) atom to form distorted MnO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 pentagonal pyramids, corners with two equivalent Si(2)O4 tetrahedra, and corners with three equivalent Si(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(4), one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form distorted MnO6 pentagonal pyramids that share  a cornercorner with one Si(1)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Mn(2)O6 pentagonal pyramid, and  an edgeedge with one Si(2)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, 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  a cornercorner with one Mn(2)O6 pentagonal pyramid and corners with three equivalent Mn(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(2)O6 pentagonal pyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Li(1), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted tetrahedral geometry to one Li(1), one Li(2), one Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(2), one Mn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(2) and one Si(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Li(2), one Mn(1), one Mn(2), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiMnSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.712
_cell_length_b   6.196
_cell_length_c   9.277
_cell_angle_alpha   78.051
_cell_angle_beta   81.181
_cell_angle_gamma   76.498
_symmetry_Int_Tables_number   1
_cell_volume   310.440
_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  0.681  0.363  0.914  1.0
  Li  Li1  1  0.194  0.442  0.772  1.0
  Li  Li2  1  0.806  0.558  0.228  1.0
  Li  Li3  1  0.319  0.637  0.086  1.0
  Mn  Mn4  1  0.306  0.934  0.780  1.0
  Mn  Mn5  1  0.781  0.161  0.589  1.0
  Mn  Mn6  1  0.219  0.839  0.411  1.0
  Mn  Mn7  1  0.694  0.066  0.220  1.0
  Si  Si8  1  0.815  0.840  0.908  1.0
  Si  Si9  1  0.679  0.710  0.538  1.0
  Si  Si10  1  0.321  0.290  0.462  1.0
  Si  Si11  1  0.185  0.160  0.092  1.0
  O  O12  1  0.611  0.704  0.885  1.0
  O  O13  1  0.103  0.707  0.877  1.0
  O  O14  1  0.225  0.135  0.917  1.0
  O  O15  1  0.787  0.093  0.803  1.0
  O  O16  1  0.866  0.852  0.573  1.0
  O  O17  1  0.390  0.778  0.609  1.0
  O  O18  1  0.791  0.452  0.602  1.0
  O  O19  1  0.357  0.225  0.641  1.0
  O  O20  1  0.643  0.775  0.359  1.0
  O  O21  1  0.209  0.548  0.398  1.0
  O  O22  1  0.610  0.222  0.391  1.0
  O  O23  1  0.134  0.148  0.427  1.0
  O  O24  1  0.213  0.907  0.197  1.0
  O  O25  1  0.775  0.865  0.083  1.0
  O  O26  1  0.897  0.293  0.123  1.0
  O  O27  1  0.389  0.296  0.115  1.0
[/CIF]
.