The material structure described by Li4V2(SiO4)3 crystallizes in the trigonal R-3c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Li site, Li(2) is bonded to six equivalent O(2) atoms to form distorted LiO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and faces with two equivalent V(1)O6 octahedra. V(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form VO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and  a faceface with one Li(2)O6 octahedra. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O6 octahedra and corners with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-45°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one V(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one V(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Li4V2(SiO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.469
_cell_length_b   8.469
_cell_length_c   8.469
_cell_angle_alpha   63.626
_cell_angle_beta   63.626
_cell_angle_gamma   63.626
_symmetry_Int_Tables_number   1
_cell_volume   463.868
_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  0.336  0.750  0.164  1.0
  Li  Li1  1  0.836  0.664  0.250  1.0
  Li  Li2  1  0.500  0.500  0.500  1.0
  Li  Li3  1  0.750  0.164  0.336  1.0
  Li  Li4  1  0.250  0.836  0.664  1.0
  Li  Li5  1  0.164  0.336  0.750  1.0
  Li  Li6  1  0.000  0.000  0.000  1.0
  Li  Li7  1  0.664  0.250  0.836  1.0
  V  V8  1  0.139  0.139  0.139  1.0
  V  V9  1  0.639  0.639  0.639  1.0
  V  V10  1  0.361  0.361  0.361  1.0
  V  V11  1  0.861  0.861  0.861  1.0
  Si  Si12  1  0.040  0.750  0.460  1.0
  Si  Si13  1  0.750  0.460  0.040  1.0
  Si  Si14  1  0.540  0.960  0.250  1.0
  Si  Si15  1  0.460  0.040  0.750  1.0
  Si  Si16  1  0.250  0.540  0.960  1.0
  Si  Si17  1  0.960  0.250  0.540  1.0
  O  O18  1  0.810  0.632  0.009  1.0
  O  O19  1  0.310  0.509  0.132  1.0
  O  O20  1  0.243  0.588  0.441  1.0
  O  O21  1  0.059  0.912  0.257  1.0
  O  O22  1  0.009  0.810  0.632  1.0
  O  O23  1  0.868  0.690  0.491  1.0
  O  O24  1  0.912  0.257  0.059  1.0
  O  O25  1  0.743  0.941  0.088  1.0
  O  O26  1  0.559  0.757  0.412  1.0
  O  O27  1  0.509  0.132  0.310  1.0
  O  O28  1  0.368  0.991  0.190  1.0
  O  O29  1  0.588  0.441  0.243  1.0
  O  O30  1  0.412  0.559  0.757  1.0
  O  O31  1  0.632  0.009  0.810  1.0
  O  O32  1  0.491  0.868  0.690  1.0
  O  O33  1  0.441  0.243  0.588  1.0
  O  O34  1  0.257  0.059  0.912  1.0
  O  O35  1  0.088  0.743  0.941  1.0
  O  O36  1  0.132  0.310  0.509  1.0
  O  O37  1  0.991  0.190  0.368  1.0
  O  O38  1  0.941  0.088  0.743  1.0
  O  O39  1  0.757  0.412  0.559  1.0
  O  O40  1  0.690  0.491  0.868  1.0
  O  O41  1  0.190  0.368  0.991  1.0
[/CIF]
.
The material structure described by Li4V2(SiO4)3 crystallizes in the trigonal R-3c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Li site, Li(2) is bonded to six equivalent O(2) atoms to form distorted LiO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and faces with two equivalent V(1)O6 octahedra. V(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form VO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and  a faceface with one Li(2)O6 octahedra. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O6 octahedra and corners with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-45°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one V(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one V(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Li4V2(SiO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.469
_cell_length_b   8.469
_cell_length_c   8.469
_cell_angle_alpha   63.626
_cell_angle_beta   63.626
_cell_angle_gamma   63.626
_symmetry_Int_Tables_number   1
_cell_volume   463.868
_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  0.336  0.750  0.164  1.0
  Li  Li1  1  0.836  0.664  0.250  1.0
  Li  Li2  1  0.500  0.500  0.500  1.0
  Li  Li3  1  0.750  0.164  0.336  1.0
  Li  Li4  1  0.250  0.836  0.664  1.0
  Li  Li5  1  0.164  0.336  0.750  1.0
  Li  Li6  1  0.000  0.000  0.000  1.0
  Li  Li7  1  0.664  0.250  0.836  1.0
  V  V8  1  0.139  0.139  0.139  1.0
  V  V9  1  0.639  0.639  0.639  1.0
  V  V10  1  0.361  0.361  0.361  1.0
  V  V11  1  0.861  0.861  0.861  1.0
  Si  Si12  1  0.040  0.750  0.460  1.0
  Si  Si13  1  0.750  0.460  0.040  1.0
  Si  Si14  1  0.540  0.960  0.250  1.0
  Si  Si15  1  0.460  0.040  0.750  1.0
  Si  Si16  1  0.250  0.540  0.960  1.0
  Si  Si17  1  0.960  0.250  0.540  1.0
  O  O18  1  0.810  0.632  0.009  1.0
  O  O19  1  0.310  0.509  0.132  1.0
  O  O20  1  0.243  0.588  0.441  1.0
  O  O21  1  0.059  0.912  0.257  1.0
  O  O22  1  0.009  0.810  0.632  1.0
  O  O23  1  0.868  0.690  0.491  1.0
  O  O24  1  0.912  0.257  0.059  1.0
  O  O25  1  0.743  0.941  0.088  1.0
  O  O26  1  0.559  0.757  0.412  1.0
  O  O27  1  0.509  0.132  0.310  1.0
  O  O28  1  0.368  0.991  0.190  1.0
  O  O29  1  0.588  0.441  0.243  1.0
  O  O30  1  0.412  0.559  0.757  1.0
  O  O31  1  0.632  0.009  0.810  1.0
  O  O32  1  0.491  0.868  0.690  1.0
  O  O33  1  0.441  0.243  0.588  1.0
  O  O34  1  0.257  0.059  0.912  1.0
  O  O35  1  0.088  0.743  0.941  1.0
  O  O36  1  0.132  0.310  0.509  1.0
  O  O37  1  0.991  0.190  0.368  1.0
  O  O38  1  0.941  0.088  0.743  1.0
  O  O39  1  0.757  0.412  0.559  1.0
  O  O40  1  0.690  0.491  0.868  1.0
  O  O41  1  0.190  0.368  0.991  1.0
[/CIF]
.