The compound described by RbLiV(PO4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 9-coordinate geometry to one O(3), one O(5), one O(7), one O(8), two equivalent O(1), and three equivalent O(4) atoms. Li(1) is bonded in a distorted trigonal non-coplanar geometry to one O(3) and two equivalent O(8) atoms. V(1) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form VO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-51°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent V(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-47°. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Li(1), and one V(1) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one V(1), and one P(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one V(1), and one P(2) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the eighth O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one V(1), and one P(2) atom. is represented by the CIF file [CIF]
data_RbLiV(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.028
_cell_length_b   4.939
_cell_length_c   16.367
_cell_angle_alpha   84.672
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   726.632
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.636  0.097  0.590  1.0
  Rb  Rb1  1  0.136  0.903  0.910  1.0
  Rb  Rb2  1  0.864  0.097  0.090  1.0
  Rb  Rb3  1  0.364  0.903  0.410  1.0
  Li  Li4  1  0.485  0.245  0.983  1.0
  Li  Li5  1  0.015  0.245  0.483  1.0
  Li  Li6  1  0.985  0.755  0.517  1.0
  Li  Li7  1  0.515  0.755  0.017  1.0
  V  V8  1  0.569  0.096  0.832  1.0
  V  V9  1  0.931  0.096  0.332  1.0
  V  V10  1  0.069  0.904  0.668  1.0
  V  V11  1  0.431  0.904  0.168  1.0
  P  P12  1  0.278  0.422  0.594  1.0
  P  P13  1  0.885  0.359  0.760  1.0
  P  P14  1  0.222  0.422  0.094  1.0
  P  P15  1  0.615  0.359  0.260  1.0
  P  P16  1  0.385  0.641  0.740  1.0
  P  P17  1  0.778  0.578  0.906  1.0
  P  P18  1  0.115  0.641  0.240  1.0
  P  P19  1  0.722  0.578  0.406  1.0
  O  O20  1  0.910  0.438  0.854  1.0
  O  O21  1  0.424  0.401  0.801  1.0
  O  O22  1  0.654  0.358  0.918  1.0
  O  O23  1  0.590  0.438  0.354  1.0
  O  O24  1  0.342  0.359  0.513  1.0
  O  O25  1  0.720  0.287  0.752  1.0
  O  O26  1  0.076  0.401  0.301  1.0
  O  O27  1  0.846  0.358  0.418  1.0
  O  O28  1  0.158  0.359  0.013  1.0
  O  O29  1  0.780  0.287  0.252  1.0
  O  O30  1  0.231  0.175  0.651  1.0
  O  O31  1  0.990  0.115  0.756  1.0
  O  O32  1  0.968  0.045  0.587  1.0
  O  O33  1  0.269  0.175  0.151  1.0
  O  O34  1  0.510  0.115  0.256  1.0
  O  O35  1  0.468  0.955  0.913  1.0
  O  O36  1  0.532  0.045  0.087  1.0
  O  O37  1  0.490  0.885  0.744  1.0
  O  O38  1  0.731  0.825  0.849  1.0
  O  O39  1  0.032  0.955  0.413  1.0
  O  O40  1  0.010  0.885  0.244  1.0
  O  O41  1  0.769  0.825  0.349  1.0
  O  O42  1  0.220  0.713  0.748  1.0
  O  O43  1  0.842  0.641  0.987  1.0
  O  O44  1  0.154  0.642  0.582  1.0
  O  O45  1  0.924  0.599  0.699  1.0
  O  O46  1  0.280  0.713  0.248  1.0
  O  O47  1  0.658  0.641  0.487  1.0
  O  O48  1  0.410  0.562  0.646  1.0
  O  O49  1  0.346  0.642  0.082  1.0
  O  O50  1  0.576  0.599  0.199  1.0
  O  O51  1  0.090  0.562  0.146  1.0
[/CIF]
.
The compound described by RbLiV(PO4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 9-coordinate geometry to one O(3), one O(5), one O(7), one O(8), two equivalent O(1), and three equivalent O(4) atoms. Li(1) is bonded in a distorted trigonal non-coplanar geometry to one O(3) and two equivalent O(8) atoms. V(1) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form VO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-51°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent V(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-47°. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Li(1), and one V(1) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one V(1), and one P(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one V(1), and one P(2) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the eighth O site, O(7) is bonded in a 2-coordinate geometry to one Rb(1), one V(1), and one P(2) atom. is represented by the CIF file [CIF]
data_RbLiV(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.028
_cell_length_b   4.939
_cell_length_c   16.367
_cell_angle_alpha   84.672
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   726.632
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.636  0.097  0.590  1.0
  Rb  Rb1  1  0.136  0.903  0.910  1.0
  Rb  Rb2  1  0.864  0.097  0.090  1.0
  Rb  Rb3  1  0.364  0.903  0.410  1.0
  Li  Li4  1  0.485  0.245  0.983  1.0
  Li  Li5  1  0.015  0.245  0.483  1.0
  Li  Li6  1  0.985  0.755  0.517  1.0
  Li  Li7  1  0.515  0.755  0.017  1.0
  V  V8  1  0.569  0.096  0.832  1.0
  V  V9  1  0.931  0.096  0.332  1.0
  V  V10  1  0.069  0.904  0.668  1.0
  V  V11  1  0.431  0.904  0.168  1.0
  P  P12  1  0.278  0.422  0.594  1.0
  P  P13  1  0.885  0.359  0.760  1.0
  P  P14  1  0.222  0.422  0.094  1.0
  P  P15  1  0.615  0.359  0.260  1.0
  P  P16  1  0.385  0.641  0.740  1.0
  P  P17  1  0.778  0.578  0.906  1.0
  P  P18  1  0.115  0.641  0.240  1.0
  P  P19  1  0.722  0.578  0.406  1.0
  O  O20  1  0.910  0.438  0.854  1.0
  O  O21  1  0.424  0.401  0.801  1.0
  O  O22  1  0.654  0.358  0.918  1.0
  O  O23  1  0.590  0.438  0.354  1.0
  O  O24  1  0.342  0.359  0.513  1.0
  O  O25  1  0.720  0.287  0.752  1.0
  O  O26  1  0.076  0.401  0.301  1.0
  O  O27  1  0.846  0.358  0.418  1.0
  O  O28  1  0.158  0.359  0.013  1.0
  O  O29  1  0.780  0.287  0.252  1.0
  O  O30  1  0.231  0.175  0.651  1.0
  O  O31  1  0.990  0.115  0.756  1.0
  O  O32  1  0.968  0.045  0.587  1.0
  O  O33  1  0.269  0.175  0.151  1.0
  O  O34  1  0.510  0.115  0.256  1.0
  O  O35  1  0.468  0.955  0.913  1.0
  O  O36  1  0.532  0.045  0.087  1.0
  O  O37  1  0.490  0.885  0.744  1.0
  O  O38  1  0.731  0.825  0.849  1.0
  O  O39  1  0.032  0.955  0.413  1.0
  O  O40  1  0.010  0.885  0.244  1.0
  O  O41  1  0.769  0.825  0.349  1.0
  O  O42  1  0.220  0.713  0.748  1.0
  O  O43  1  0.842  0.641  0.987  1.0
  O  O44  1  0.154  0.642  0.582  1.0
  O  O45  1  0.924  0.599  0.699  1.0
  O  O46  1  0.280  0.713  0.248  1.0
  O  O47  1  0.658  0.641  0.487  1.0
  O  O48  1  0.410  0.562  0.646  1.0
  O  O49  1  0.346  0.642  0.082  1.0
  O  O50  1  0.576  0.599  0.199  1.0
  O  O51  1  0.090  0.562  0.146  1.0
[/CIF]
.