The material structure described by Li2Mn5Si5O16 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 trigonal non-coplanar geometry to one O(6), one O(8), and one O(9) atom. In the second Li site, Li(2) is bonded to one O(14), one O(15), one O(2), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(16), and one O(4) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent Mn(5)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(10), one O(12), one O(4), and one O(7) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(13), one O(3), and one O(7) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent Mn(5)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(5), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(13), one O(16), and one O(3) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(15), one O(2), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Si(4)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Mn(5)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(4), one O(5), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Mn(4)O4 tetrahedra. In the fourth Si site, Si(4) 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(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O4 tetrahedra,  a cornercorner with one Mn(5)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. In the fifth Si site, Si(5) 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(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O4 tetrahedra,  a cornercorner with one Mn(5)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, and corners with two equivalent Mn(2)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Si(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(2), one Si(1), and one Si(3) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(3), one Mn(5), and one Si(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Mn(4), and one Si(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2), one Mn(3), and one Si(2) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(4) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Si(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(5) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Mn(3), one Mn(5), and one Si(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Li(2), one Mn(4), and one Si(5) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Si(1), and one Si(4) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2Mn5Si5O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.140
_cell_length_b   7.066
_cell_length_c   10.495
_cell_angle_alpha   89.167
_cell_angle_beta   89.868
_cell_angle_gamma   89.808
_symmetry_Int_Tables_number   1
_cell_volume   381.117
_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  0.356  0.503  0.337  1.0
  Li  Li1  1  0.821  0.999  0.144  1.0
  Mn  Mn2  1  0.180  0.011  0.859  1.0
  Mn  Mn3  1  0.188  0.520  0.849  1.0
  Mn  Mn4  1  0.692  0.495  0.643  1.0
  Mn  Mn5  1  0.834  0.498  0.153  1.0
  Mn  Mn6  1  0.679  0.996  0.659  1.0
  Si  Si7  1  0.301  0.990  0.336  1.0
  Si  Si8  1  0.178  0.768  0.586  1.0
  Si  Si9  1  0.343  0.743  0.106  1.0
  Si  Si10  1  0.795  0.230  0.403  1.0
  Si  Si11  1  0.682  0.255  0.911  1.0
  O  O12  1  0.280  0.949  0.667  1.0
  O  O13  1  0.220  0.931  0.191  1.0
  O  O14  1  0.860  0.754  0.594  1.0
  O  O15  1  0.233  0.762  0.959  1.0
  O  O16  1  0.655  0.757  0.118  1.0
  O  O17  1  0.269  0.803  0.432  1.0
  O  O18  1  0.298  0.571  0.646  1.0
  O  O19  1  0.227  0.553  0.173  1.0
  O  O20  1  0.722  0.432  0.340  1.0
  O  O21  1  0.799  0.444  0.834  1.0
  O  O22  1  0.105  0.167  0.373  1.0
  O  O23  1  0.363  0.264  0.891  1.0
  O  O24  1  0.754  0.238  0.555  1.0
  O  O25  1  0.776  0.247  0.059  1.0
  O  O26  1  0.606  0.060  0.341  1.0
  O  O27  1  0.784  0.060  0.841  1.0
[/CIF]
.
The material structure described by Li2Mn5Si5O16 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 trigonal non-coplanar geometry to one O(6), one O(8), and one O(9) atom. In the second Li site, Li(2) is bonded to one O(14), one O(15), one O(2), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(16), and one O(4) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent Mn(5)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(10), one O(12), one O(4), and one O(7) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(13), one O(3), and one O(7) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent Mn(5)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(5), one O(8), and one O(9) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(13), one O(16), and one O(3) atom to form MnO4 tetrahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(15), one O(2), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Si(4)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Mn(3)O4 tetrahedra, and corners with two equivalent Mn(5)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(2), one O(4), one O(5), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O4 tetrahedra,  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Mn(4)O4 tetrahedra. In the fourth Si site, Si(4) 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(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O4 tetrahedra,  a cornercorner with one Mn(5)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. In the fifth Si site, Si(5) 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(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 tetrahedra,  a cornercorner with one Mn(4)O4 tetrahedra,  a cornercorner with one Mn(5)O4 tetrahedra, corners with two equivalent Mn(1)O4 tetrahedra, and corners with two equivalent Mn(2)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Si(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(2), one Si(1), and one Si(3) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(3), one Mn(5), and one Si(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Mn(4), and one Si(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2), one Mn(3), and one Si(2) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(4), and one Si(4) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Si(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(5) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Mn(3), one Mn(5), and one Si(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Li(2), one Mn(4), and one Si(5) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Si(1), and one Si(4) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2Mn5Si5O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.140
_cell_length_b   7.066
_cell_length_c   10.495
_cell_angle_alpha   89.167
_cell_angle_beta   89.868
_cell_angle_gamma   89.808
_symmetry_Int_Tables_number   1
_cell_volume   381.117
_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  0.356  0.503  0.337  1.0
  Li  Li1  1  0.821  0.999  0.144  1.0
  Mn  Mn2  1  0.180  0.011  0.859  1.0
  Mn  Mn3  1  0.188  0.520  0.849  1.0
  Mn  Mn4  1  0.692  0.495  0.643  1.0
  Mn  Mn5  1  0.834  0.498  0.153  1.0
  Mn  Mn6  1  0.679  0.996  0.659  1.0
  Si  Si7  1  0.301  0.990  0.336  1.0
  Si  Si8  1  0.178  0.768  0.586  1.0
  Si  Si9  1  0.343  0.743  0.106  1.0
  Si  Si10  1  0.795  0.230  0.403  1.0
  Si  Si11  1  0.682  0.255  0.911  1.0
  O  O12  1  0.280  0.949  0.667  1.0
  O  O13  1  0.220  0.931  0.191  1.0
  O  O14  1  0.860  0.754  0.594  1.0
  O  O15  1  0.233  0.762  0.959  1.0
  O  O16  1  0.655  0.757  0.118  1.0
  O  O17  1  0.269  0.803  0.432  1.0
  O  O18  1  0.298  0.571  0.646  1.0
  O  O19  1  0.227  0.553  0.173  1.0
  O  O20  1  0.722  0.432  0.340  1.0
  O  O21  1  0.799  0.444  0.834  1.0
  O  O22  1  0.105  0.167  0.373  1.0
  O  O23  1  0.363  0.264  0.891  1.0
  O  O24  1  0.754  0.238  0.555  1.0
  O  O25  1  0.776  0.247  0.059  1.0
  O  O26  1  0.606  0.060  0.341  1.0
  O  O27  1  0.784  0.060  0.841  1.0
[/CIF]
.