The crystal structure described by Li2Cr2Si5O13 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(1), one O(10), one O(12), and one O(13) atom. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(5), and one O(8) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(2), and one O(7) atom. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(2), one O(7), and one O(8) atom to form distorted CrO5 trigonal bipyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. In the second Si site, Si(2) is bonded to one O(1), one O(11), one O(13), and one O(6) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(4), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Cr(2)O5 trigonal bipyramids. In the fourth Si site, Si(4) is bonded to one O(12), one O(13), one O(5), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. In the fifth Si site, Si(5) is bonded to one O(10), one O(11), one O(3), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Cr(1), and one Si(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Si(1) and one Si(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Si(1), and one Si(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), one Cr(2), and one Si(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(1), one Cr(1), one Cr(2), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Li(1), one Si(2), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2Cr2Si5O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.660
_cell_length_b   7.952
_cell_length_c   9.859
_cell_angle_alpha   82.997
_cell_angle_beta   111.333
_cell_angle_gamma   111.033
_symmetry_Int_Tables_number   1
_cell_volume   522.064
_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  0.219  0.934  0.148  1.0
  Li  Li1  1  0.152  0.600  0.259  1.0
  Li  Li2  1  0.848  0.400  0.741  1.0
  Li  Li3  1  0.781  0.066  0.852  1.0
  Cr  Cr4  1  0.038  0.851  0.399  1.0
  Cr  Cr5  1  0.433  0.164  0.596  1.0
  Cr  Cr6  1  0.567  0.836  0.404  1.0
  Cr  Cr7  1  0.962  0.149  0.601  1.0
  Si  Si8  1  0.168  0.774  0.737  1.0
  Si  Si9  1  0.203  0.303  0.952  1.0
  Si  Si10  1  0.316  0.545  0.595  1.0
  Si  Si11  1  0.241  0.246  0.263  1.0
  Si  Si12  1  0.617  0.294  0.954  1.0
  Si  Si13  1  0.383  0.706  0.046  1.0
  Si  Si14  1  0.759  0.754  0.737  1.0
  Si  Si15  1  0.684  0.455  0.405  1.0
  Si  Si16  1  0.797  0.697  0.048  1.0
  Si  Si17  1  0.832  0.226  0.263  1.0
  O  O18  1  0.007  0.228  0.811  1.0
  O  O19  1  0.184  0.941  0.624  1.0
  O  O20  1  0.320  0.835  0.905  1.0
  O  O21  1  0.207  0.607  0.689  1.0
  O  O22  1  0.060  0.317  0.253  1.0
  O  O23  1  0.399  0.303  0.926  1.0
  O  O24  1  0.213  0.329  0.571  1.0
  O  O25  1  0.316  0.673  0.453  1.0
  O  O26  1  0.554  0.583  0.699  1.0
  O  O27  1  0.373  0.781  0.187  1.0
  O  O28  1  0.221  0.501  0.001  1.0
  O  O29  1  0.267  0.080  0.373  1.0
  O  O30  1  0.186  0.170  0.096  1.0
  O  O31  1  0.814  0.830  0.904  1.0
  O  O32  1  0.733  0.920  0.627  1.0
  O  O33  1  0.779  0.499  0.999  1.0
  O  O34  1  0.627  0.219  0.813  1.0
  O  O35  1  0.446  0.417  0.301  1.0
  O  O36  1  0.684  0.327  0.547  1.0
  O  O37  1  0.787  0.671  0.429  1.0
  O  O38  1  0.601  0.697  0.074  1.0
  O  O39  1  0.940  0.683  0.747  1.0
  O  O40  1  0.793  0.393  0.311  1.0
  O  O41  1  0.680  0.165  0.095  1.0
  O  O42  1  0.816  0.059  0.376  1.0
  O  O43  1  0.993  0.772  0.189  1.0
[/CIF]
.
The crystal structure described by Li2Cr2Si5O13 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(1), one O(10), one O(12), and one O(13) atom. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(5), and one O(8) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to one O(1), one O(12), one O(2), and one O(7) atom. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(2), one O(7), and one O(8) atom to form distorted CrO5 trigonal bipyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. In the second Si site, Si(2) is bonded to one O(1), one O(11), one O(13), and one O(6) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(4), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Cr(2)O5 trigonal bipyramids. In the fourth Si site, Si(4) is bonded to one O(12), one O(13), one O(5), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. In the fifth Si site, Si(5) is bonded to one O(10), one O(11), one O(3), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  a cornercorner with one Cr(2)O5 trigonal bipyramid. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Cr(1), and one Si(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Si(1) and one Si(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(2), one Si(1), and one Si(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), one Cr(2), and one Si(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(1), one Cr(1), one Cr(2), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Li(1), one Si(2), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2Cr2Si5O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.660
_cell_length_b   7.952
_cell_length_c   9.859
_cell_angle_alpha   82.997
_cell_angle_beta   111.333
_cell_angle_gamma   111.033
_symmetry_Int_Tables_number   1
_cell_volume   522.064
_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  0.219  0.934  0.148  1.0
  Li  Li1  1  0.152  0.600  0.259  1.0
  Li  Li2  1  0.848  0.400  0.741  1.0
  Li  Li3  1  0.781  0.066  0.852  1.0
  Cr  Cr4  1  0.038  0.851  0.399  1.0
  Cr  Cr5  1  0.433  0.164  0.596  1.0
  Cr  Cr6  1  0.567  0.836  0.404  1.0
  Cr  Cr7  1  0.962  0.149  0.601  1.0
  Si  Si8  1  0.168  0.774  0.737  1.0
  Si  Si9  1  0.203  0.303  0.952  1.0
  Si  Si10  1  0.316  0.545  0.595  1.0
  Si  Si11  1  0.241  0.246  0.263  1.0
  Si  Si12  1  0.617  0.294  0.954  1.0
  Si  Si13  1  0.383  0.706  0.046  1.0
  Si  Si14  1  0.759  0.754  0.737  1.0
  Si  Si15  1  0.684  0.455  0.405  1.0
  Si  Si16  1  0.797  0.697  0.048  1.0
  Si  Si17  1  0.832  0.226  0.263  1.0
  O  O18  1  0.007  0.228  0.811  1.0
  O  O19  1  0.184  0.941  0.624  1.0
  O  O20  1  0.320  0.835  0.905  1.0
  O  O21  1  0.207  0.607  0.689  1.0
  O  O22  1  0.060  0.317  0.253  1.0
  O  O23  1  0.399  0.303  0.926  1.0
  O  O24  1  0.213  0.329  0.571  1.0
  O  O25  1  0.316  0.673  0.453  1.0
  O  O26  1  0.554  0.583  0.699  1.0
  O  O27  1  0.373  0.781  0.187  1.0
  O  O28  1  0.221  0.501  0.001  1.0
  O  O29  1  0.267  0.080  0.373  1.0
  O  O30  1  0.186  0.170  0.096  1.0
  O  O31  1  0.814  0.830  0.904  1.0
  O  O32  1  0.733  0.920  0.627  1.0
  O  O33  1  0.779  0.499  0.999  1.0
  O  O34  1  0.627  0.219  0.813  1.0
  O  O35  1  0.446  0.417  0.301  1.0
  O  O36  1  0.684  0.327  0.547  1.0
  O  O37  1  0.787  0.671  0.429  1.0
  O  O38  1  0.601  0.697  0.074  1.0
  O  O39  1  0.940  0.683  0.747  1.0
  O  O40  1  0.793  0.393  0.311  1.0
  O  O41  1  0.680  0.165  0.095  1.0
  O  O42  1  0.816  0.059  0.376  1.0
  O  O43  1  0.993  0.772  0.189  1.0
[/CIF]
.