The crystal structure described by LiSr2V2(Si2O7)2 crystallizes in the triclinic P1 space group. Li(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(5), one O(6), and one O(9) atom. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(14), one O(6), one O(7), one O(8), and two equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to one O(11), one O(12), one O(13), one O(14), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(2) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(12), one O(13), one O(5), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(6), one O(7), and one O(9) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent V(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to one O(1), one O(14), one O(3), and one O(6) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(4), and one O(7) atom to form corner-sharing SiO4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(2), one O(4), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and corners with two equivalent V(1)O5 trigonal bipyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Sr(1), one Si(2), and one Si(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Sr(2), one Si(1), and one Si(4) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Li(1), one Si(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(1), one Sr(2), one V(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Li(1), one Sr(1), one Sr(2), one V(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Li(1), one Sr(2), and one V(2) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Li(1), one Sr(1), and one V(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(1) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(2) atom. is represented by the CIF card [CIF]
data_Sr2LiV2(Si2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.464
_cell_length_b   7.197
_cell_length_c   7.835
_cell_angle_alpha   91.845
_cell_angle_beta   109.229
_cell_angle_gamma   89.220
_symmetry_Int_Tables_number   1
_cell_volume   290.751
_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
  Sr  Sr0  1  0.172  0.767  0.388  1.0
  Sr  Sr1  1  0.810  0.252  0.603  1.0
  Li  Li2  1  0.874  0.515  0.999  1.0
  V  V3  1  0.920  0.773  0.793  1.0
  V  V4  1  0.107  0.253  0.239  1.0
  Si  Si5  1  0.401  0.481  0.790  1.0
  Si  Si6  1  0.590  0.531  0.229  1.0
  Si  Si7  1  0.593  0.982  0.217  1.0
  Si  Si8  1  0.402  0.034  0.784  1.0
  O  O9  1  0.622  0.759  0.277  1.0
  O  O10  1  0.365  0.257  0.727  1.0
  O  O11  1  0.496  0.492  0.012  1.0
  O  O12  1  0.491  0.011  0.002  1.0
  O  O13  1  0.650  0.547  0.740  1.0
  O  O14  1  0.886  0.448  0.310  1.0
  O  O15  1  0.393  0.070  0.314  1.0
  O  O16  1  0.112  0.956  0.687  1.0
  O  O17  1  0.004  0.262  0.015  1.0
  O  O18  1  0.019  0.746  0.039  1.0
  O  O19  1  0.884  0.070  0.309  1.0
  O  O20  1  0.618  0.952  0.701  1.0
  O  O21  1  0.123  0.576  0.696  1.0
  O  O22  1  0.392  0.449  0.323  1.0
[/CIF]
.
The crystal structure described by LiSr2V2(Si2O7)2 crystallizes in the triclinic P1 space group. Li(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(5), one O(6), and one O(9) atom. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(14), one O(6), one O(7), one O(8), and two equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to one O(11), one O(12), one O(13), one O(14), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(2) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(12), one O(13), one O(5), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(6), one O(7), and one O(9) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent V(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to one O(1), one O(14), one O(3), and one O(6) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(4), and one O(7) atom to form corner-sharing SiO4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(2), one O(4), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and corners with two equivalent V(1)O5 trigonal bipyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Sr(1), one Si(2), and one Si(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Sr(2), one Si(1), and one Si(4) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Li(1), one Si(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(1), one Sr(2), one V(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Li(1), one Sr(1), one Sr(2), one V(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Li(1), one Sr(2), and one V(2) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Li(1), one Sr(1), and one V(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one Si(1) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one V(2), and one Si(2) atom. is represented by the CIF card [CIF]
data_Sr2LiV2(Si2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.464
_cell_length_b   7.197
_cell_length_c   7.835
_cell_angle_alpha   91.845
_cell_angle_beta   109.229
_cell_angle_gamma   89.220
_symmetry_Int_Tables_number   1
_cell_volume   290.751
_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
  Sr  Sr0  1  0.172  0.767  0.388  1.0
  Sr  Sr1  1  0.810  0.252  0.603  1.0
  Li  Li2  1  0.874  0.515  0.999  1.0
  V  V3  1  0.920  0.773  0.793  1.0
  V  V4  1  0.107  0.253  0.239  1.0
  Si  Si5  1  0.401  0.481  0.790  1.0
  Si  Si6  1  0.590  0.531  0.229  1.0
  Si  Si7  1  0.593  0.982  0.217  1.0
  Si  Si8  1  0.402  0.034  0.784  1.0
  O  O9  1  0.622  0.759  0.277  1.0
  O  O10  1  0.365  0.257  0.727  1.0
  O  O11  1  0.496  0.492  0.012  1.0
  O  O12  1  0.491  0.011  0.002  1.0
  O  O13  1  0.650  0.547  0.740  1.0
  O  O14  1  0.886  0.448  0.310  1.0
  O  O15  1  0.393  0.070  0.314  1.0
  O  O16  1  0.112  0.956  0.687  1.0
  O  O17  1  0.004  0.262  0.015  1.0
  O  O18  1  0.019  0.746  0.039  1.0
  O  O19  1  0.884  0.070  0.309  1.0
  O  O20  1  0.618  0.952  0.701  1.0
  O  O21  1  0.123  0.576  0.696  1.0
  O  O22  1  0.392  0.449  0.323  1.0
[/CIF]
.