The compound described by Li2MnSi3O8 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(4), and one O(7) atom. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(5) atom. Mn(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and one O(6) atom. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form corner-sharing SiO4 tetrahedra. In the second Si site, Si(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form corner-sharing SiO4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(2), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(2), and one Si(3) atom. In the third O site, O(3) is bonded in a trigonal pyramidal geometry to one Li(1), one Li(2), one Mn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Mn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Mn(1), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Si(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Li(1), one Si(1), and one Si(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Si(2) and one Si(3) atom. is represented by the CIF card [CIF]
data_Li2MnSi3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.071
_cell_length_b   6.303
_cell_length_c   6.412
_cell_angle_alpha   76.927
_cell_angle_beta   73.936
_cell_angle_gamma   73.110
_symmetry_Int_Tables_number   1
_cell_volume   186.038
_cell_formula_units_Z   1
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  0.282  0.644  0.145  1.0
  Li  Li1  1  0.777  0.301  0.891  1.0
  Mn  Mn2  1  0.622  0.275  0.386  1.0
  O  O3  1  0.980  0.158  0.141  1.0
  O  O4  1  0.060  0.766  0.814  1.0
  O  O5  1  0.422  0.332  0.112  1.0
  O  O6  1  0.359  0.584  0.447  1.0
  O  O7  1  0.704  0.143  0.687  1.0
  O  O8  1  0.313  0.018  0.443  1.0
  O  O9  1  0.512  0.893  0.055  1.0
  O  O10  1  0.615  0.719  0.702  1.0
  Si  Si11  1  0.295  0.113  0.177  1.0
  Si  Si12  1  0.335  0.764  0.595  1.0
  Si  Si13  1  0.723  0.889  0.807  1.0
[/CIF]
.
The compound described by Li2MnSi3O8 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(4), and one O(7) atom. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(5) atom. Mn(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and one O(6) atom. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form corner-sharing SiO4 tetrahedra. In the second Si site, Si(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form corner-sharing SiO4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(2), one Mn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(2), and one Si(3) atom. In the third O site, O(3) is bonded in a trigonal pyramidal geometry to one Li(1), one Li(2), one Mn(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Mn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Mn(1), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Si(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Li(1), one Si(1), and one Si(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Si(2) and one Si(3) atom. is represented by the CIF card [CIF]
data_Li2MnSi3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.071
_cell_length_b   6.303
_cell_length_c   6.412
_cell_angle_alpha   76.927
_cell_angle_beta   73.936
_cell_angle_gamma   73.110
_symmetry_Int_Tables_number   1
_cell_volume   186.038
_cell_formula_units_Z   1
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  0.282  0.644  0.145  1.0
  Li  Li1  1  0.777  0.301  0.891  1.0
  Mn  Mn2  1  0.622  0.275  0.386  1.0
  O  O3  1  0.980  0.158  0.141  1.0
  O  O4  1  0.060  0.766  0.814  1.0
  O  O5  1  0.422  0.332  0.112  1.0
  O  O6  1  0.359  0.584  0.447  1.0
  O  O7  1  0.704  0.143  0.687  1.0
  O  O8  1  0.313  0.018  0.443  1.0
  O  O9  1  0.512  0.893  0.055  1.0
  O  O10  1  0.615  0.719  0.702  1.0
  Si  Si11  1  0.295  0.113  0.177  1.0
  Si  Si12  1  0.335  0.764  0.595  1.0
  Si  Si13  1  0.723  0.889  0.807  1.0
[/CIF]
.