The structure described by Li2V(Si2O5)3 crystallizes in the monoclinic Cc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(14), one O(2), and one O(8) atom. In the second Li site, Li(2) is bonded in a distorted T-shaped geometry to one O(2), one O(4), and one O(6) atom. V(1) is bonded to one O(1), one O(10), one O(15), one O(2), one O(4), and one O(6) atom to form distorted VO6 octahedra 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,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(4), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the second Si site, Si(2) is bonded to one O(14), one O(15), one O(3), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the third Si site, Si(3) is bonded to one O(12), one O(6), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 34°. In the fifth Si site, Si(5) is bonded to one O(11), one O(13), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the sixth Si site, Si(6) is bonded to one O(1), one O(12), one O(14), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(6) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one V(1), and one Si(5) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(2), one V(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(6) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(2), one V(1), and one Si(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Si(3) and one Si(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(1) and one Si(4) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Si(4) and one Si(5) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Si(3) and one Si(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Li(1), one Si(1), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Li(1), one Si(2), and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one V(1) and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2V(Si2O5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.152
_cell_length_b   7.358
_cell_length_c   15.107
_cell_angle_alpha   75.403
_cell_angle_beta   90.000
_cell_angle_gamma   60.921
_symmetry_Int_Tables_number   1
_cell_volume   665.231
_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  0.856  0.817  0.929  1.0
  Li  Li1  1  0.353  0.601  0.847  1.0
  Li  Li2  1  0.327  0.817  0.429  1.0
  Li  Li3  1  0.046  0.601  0.347  1.0
  V  V4  1  0.321  0.905  0.910  1.0
  V  V5  1  0.774  0.905  0.410  1.0
  Si  Si6  1  0.638  0.799  0.745  1.0
  Si  Si7  1  0.072  0.887  0.572  1.0
  Si  Si8  1  0.563  0.799  0.245  1.0
  Si  Si9  1  0.041  0.887  0.072  1.0
  Si  Si10  1  0.168  0.473  0.552  1.0
  Si  Si11  1  0.005  0.342  0.742  1.0
  Si  Si12  1  0.359  0.473  0.052  1.0
  Si  Si13  1  0.653  0.342  0.242  1.0
  Si  Si14  1  0.928  0.983  0.756  1.0
  Si  Si15  1  0.412  0.025  0.538  1.0
  Si  Si16  1  0.089  0.983  0.256  1.0
  Si  Si17  1  0.563  0.025  0.038  1.0
  O  O18  1  0.559  0.918  0.957  1.0
  O  O19  1  0.073  0.856  0.857  1.0
  O  O20  1  0.061  0.865  0.681  1.0
  O  O21  1  0.471  0.781  0.811  1.0
  O  O22  1  0.543  0.871  0.638  1.0
  O  O23  1  0.523  0.918  0.457  1.0
  O  O24  1  0.435  0.599  0.971  1.0
  O  O25  1  0.071  0.856  0.357  1.0
  O  O26  1  0.861  0.567  0.766  1.0
  O  O27  1  0.074  0.865  0.181  1.0
  O  O28  1  0.748  0.781  0.311  1.0
  O  O29  1  0.248  0.644  0.561  1.0
  O  O30  1  0.586  0.871  0.138  1.0
  O  O31  1  0.966  0.599  0.471  1.0
  O  O32  1  0.117  0.379  0.652  1.0
  O  O33  1  0.572  0.567  0.266  1.0
  O  O34  1  0.186  0.175  0.831  1.0
  O  O35  1  0.859  0.238  0.724  1.0
  O  O36  1  0.108  0.644  0.061  1.0
  O  O37  1  0.362  0.272  0.523  1.0
  O  O38  1  0.504  0.379  0.152  1.0
  O  O39  1  0.710  0.967  0.765  1.0
  O  O40  1  0.639  0.175  0.331  1.0
  O  O41  1  0.903  0.238  0.224  1.0
  O  O42  1  0.178  0.036  0.528  1.0
  O  O43  1  0.843  0.971  0.515  1.0
  O  O44  1  0.366  0.272  0.023  1.0
  O  O45  1  0.323  0.967  0.265  1.0
  O  O46  1  0.786  0.036  0.028  1.0
  O  O47  1  0.186  0.971  0.015  1.0
[/CIF]
.
The structure described by Li2V(Si2O5)3 crystallizes in the monoclinic Cc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(14), one O(2), and one O(8) atom. In the second Li site, Li(2) is bonded in a distorted T-shaped geometry to one O(2), one O(4), and one O(6) atom. V(1) is bonded to one O(1), one O(10), one O(15), one O(2), one O(4), and one O(6) atom to form distorted VO6 octahedra 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,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(4), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the second Si site, Si(2) is bonded to one O(14), one O(15), one O(3), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the third Si site, Si(3) is bonded to one O(12), one O(6), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 34°. In the fifth Si site, Si(5) is bonded to one O(11), one O(13), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the sixth Si site, Si(6) is bonded to one O(1), one O(12), one O(14), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(6) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one V(1), and one Si(5) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(2), one V(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(6) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(2), one V(1), and one Si(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(1), one Si(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Si(3) and one Si(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(1) and one Si(4) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Si(4) and one Si(5) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Si(3) and one Si(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Li(1), one Si(1), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Li(1), one Si(2), and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one V(1) and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2V(Si2O5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.152
_cell_length_b   7.358
_cell_length_c   15.107
_cell_angle_alpha   75.403
_cell_angle_beta   90.000
_cell_angle_gamma   60.921
_symmetry_Int_Tables_number   1
_cell_volume   665.231
_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  0.856  0.817  0.929  1.0
  Li  Li1  1  0.353  0.601  0.847  1.0
  Li  Li2  1  0.327  0.817  0.429  1.0
  Li  Li3  1  0.046  0.601  0.347  1.0
  V  V4  1  0.321  0.905  0.910  1.0
  V  V5  1  0.774  0.905  0.410  1.0
  Si  Si6  1  0.638  0.799  0.745  1.0
  Si  Si7  1  0.072  0.887  0.572  1.0
  Si  Si8  1  0.563  0.799  0.245  1.0
  Si  Si9  1  0.041  0.887  0.072  1.0
  Si  Si10  1  0.168  0.473  0.552  1.0
  Si  Si11  1  0.005  0.342  0.742  1.0
  Si  Si12  1  0.359  0.473  0.052  1.0
  Si  Si13  1  0.653  0.342  0.242  1.0
  Si  Si14  1  0.928  0.983  0.756  1.0
  Si  Si15  1  0.412  0.025  0.538  1.0
  Si  Si16  1  0.089  0.983  0.256  1.0
  Si  Si17  1  0.563  0.025  0.038  1.0
  O  O18  1  0.559  0.918  0.957  1.0
  O  O19  1  0.073  0.856  0.857  1.0
  O  O20  1  0.061  0.865  0.681  1.0
  O  O21  1  0.471  0.781  0.811  1.0
  O  O22  1  0.543  0.871  0.638  1.0
  O  O23  1  0.523  0.918  0.457  1.0
  O  O24  1  0.435  0.599  0.971  1.0
  O  O25  1  0.071  0.856  0.357  1.0
  O  O26  1  0.861  0.567  0.766  1.0
  O  O27  1  0.074  0.865  0.181  1.0
  O  O28  1  0.748  0.781  0.311  1.0
  O  O29  1  0.248  0.644  0.561  1.0
  O  O30  1  0.586  0.871  0.138  1.0
  O  O31  1  0.966  0.599  0.471  1.0
  O  O32  1  0.117  0.379  0.652  1.0
  O  O33  1  0.572  0.567  0.266  1.0
  O  O34  1  0.186  0.175  0.831  1.0
  O  O35  1  0.859  0.238  0.724  1.0
  O  O36  1  0.108  0.644  0.061  1.0
  O  O37  1  0.362  0.272  0.523  1.0
  O  O38  1  0.504  0.379  0.152  1.0
  O  O39  1  0.710  0.967  0.765  1.0
  O  O40  1  0.639  0.175  0.331  1.0
  O  O41  1  0.903  0.238  0.224  1.0
  O  O42  1  0.178  0.036  0.528  1.0
  O  O43  1  0.843  0.971  0.515  1.0
  O  O44  1  0.366  0.272  0.023  1.0
  O  O45  1  0.323  0.967  0.265  1.0
  O  O46  1  0.786  0.036  0.028  1.0
  O  O47  1  0.186  0.971  0.015  1.0
[/CIF]
.