The compound described by Rb2V(PO4)2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(4), and four equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. V(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(4) atoms. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one P(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one V(1), and one P(1) atom. In the third O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(2) and two equivalent P(1) atoms. In the fourth O site, O(1) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one V(1) atom. In the fifth O site, O(2) is bonded in a bent 150 degrees geometry to one Rb(2), one V(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2V(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   9.529
_cell_length_c   13.121
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   908.318
_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  0.250  0.577  0.904  1.0
  Rb  Rb1  1  0.250  0.923  0.404  1.0
  Rb  Rb2  1  0.750  0.423  0.096  1.0
  Rb  Rb3  1  0.750  0.077  0.596  1.0
  Rb  Rb4  1  0.250  0.359  0.594  1.0
  Rb  Rb5  1  0.250  0.141  0.094  1.0
  Rb  Rb6  1  0.750  0.641  0.406  1.0
  Rb  Rb7  1  0.750  0.859  0.906  1.0
  V  V8  1  0.250  0.003  0.798  1.0
  V  V9  1  0.250  0.497  0.298  1.0
  V  V10  1  0.750  0.997  0.202  1.0
  V  V11  1  0.750  0.503  0.702  1.0
  P  P12  1  0.044  0.769  0.649  1.0
  P  P13  1  0.456  0.731  0.149  1.0
  P  P14  1  0.544  0.231  0.351  1.0
  P  P15  1  0.956  0.269  0.851  1.0
  P  P16  1  0.956  0.231  0.351  1.0
  P  P17  1  0.544  0.269  0.851  1.0
  P  P18  1  0.456  0.769  0.649  1.0
  P  P19  1  0.044  0.731  0.149  1.0
  O  O20  1  0.250  0.931  0.912  1.0
  O  O21  1  0.250  0.569  0.412  1.0
  O  O22  1  0.750  0.069  0.088  1.0
  O  O23  1  0.750  0.431  0.588  1.0
  O  O24  1  0.937  0.655  0.708  1.0
  O  O25  1  0.563  0.845  0.208  1.0
  O  O26  1  0.437  0.345  0.292  1.0
  O  O27  1  0.063  0.155  0.792  1.0
  O  O28  1  0.063  0.345  0.292  1.0
  O  O29  1  0.437  0.155  0.792  1.0
  O  O30  1  0.563  0.655  0.708  1.0
  O  O31  1  0.937  0.845  0.208  1.0
  O  O32  1  0.976  0.805  0.544  1.0
  O  O33  1  0.524  0.695  0.044  1.0
  O  O34  1  0.476  0.195  0.456  1.0
  O  O35  1  0.024  0.305  0.956  1.0
  O  O36  1  0.024  0.195  0.456  1.0
  O  O37  1  0.476  0.305  0.956  1.0
  O  O38  1  0.524  0.805  0.544  1.0
  O  O39  1  0.976  0.695  0.044  1.0
  O  O40  1  0.059  0.900  0.719  1.0
  O  O41  1  0.441  0.600  0.219  1.0
  O  O42  1  0.559  0.100  0.281  1.0
  O  O43  1  0.941  0.400  0.781  1.0
  O  O44  1  0.941  0.100  0.281  1.0
  O  O45  1  0.559  0.400  0.781  1.0
  O  O46  1  0.441  0.900  0.719  1.0
  O  O47  1  0.059  0.600  0.219  1.0
  O  O48  1  0.250  0.701  0.642  1.0
  O  O49  1  0.250  0.799  0.142  1.0
  O  O50  1  0.750  0.299  0.358  1.0
  O  O51  1  0.750  0.201  0.858  1.0
[/CIF]
.
The compound described by Rb2V(PO4)2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(4), and four equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. V(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(4) atoms. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one P(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one V(1), and one P(1) atom. In the third O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(2) and two equivalent P(1) atoms. In the fourth O site, O(1) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one V(1) atom. In the fifth O site, O(2) is bonded in a bent 150 degrees geometry to one Rb(2), one V(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2V(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   9.529
_cell_length_c   13.121
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   908.318
_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  0.250  0.577  0.904  1.0
  Rb  Rb1  1  0.250  0.923  0.404  1.0
  Rb  Rb2  1  0.750  0.423  0.096  1.0
  Rb  Rb3  1  0.750  0.077  0.596  1.0
  Rb  Rb4  1  0.250  0.359  0.594  1.0
  Rb  Rb5  1  0.250  0.141  0.094  1.0
  Rb  Rb6  1  0.750  0.641  0.406  1.0
  Rb  Rb7  1  0.750  0.859  0.906  1.0
  V  V8  1  0.250  0.003  0.798  1.0
  V  V9  1  0.250  0.497  0.298  1.0
  V  V10  1  0.750  0.997  0.202  1.0
  V  V11  1  0.750  0.503  0.702  1.0
  P  P12  1  0.044  0.769  0.649  1.0
  P  P13  1  0.456  0.731  0.149  1.0
  P  P14  1  0.544  0.231  0.351  1.0
  P  P15  1  0.956  0.269  0.851  1.0
  P  P16  1  0.956  0.231  0.351  1.0
  P  P17  1  0.544  0.269  0.851  1.0
  P  P18  1  0.456  0.769  0.649  1.0
  P  P19  1  0.044  0.731  0.149  1.0
  O  O20  1  0.250  0.931  0.912  1.0
  O  O21  1  0.250  0.569  0.412  1.0
  O  O22  1  0.750  0.069  0.088  1.0
  O  O23  1  0.750  0.431  0.588  1.0
  O  O24  1  0.937  0.655  0.708  1.0
  O  O25  1  0.563  0.845  0.208  1.0
  O  O26  1  0.437  0.345  0.292  1.0
  O  O27  1  0.063  0.155  0.792  1.0
  O  O28  1  0.063  0.345  0.292  1.0
  O  O29  1  0.437  0.155  0.792  1.0
  O  O30  1  0.563  0.655  0.708  1.0
  O  O31  1  0.937  0.845  0.208  1.0
  O  O32  1  0.976  0.805  0.544  1.0
  O  O33  1  0.524  0.695  0.044  1.0
  O  O34  1  0.476  0.195  0.456  1.0
  O  O35  1  0.024  0.305  0.956  1.0
  O  O36  1  0.024  0.195  0.456  1.0
  O  O37  1  0.476  0.305  0.956  1.0
  O  O38  1  0.524  0.805  0.544  1.0
  O  O39  1  0.976  0.695  0.044  1.0
  O  O40  1  0.059  0.900  0.719  1.0
  O  O41  1  0.441  0.600  0.219  1.0
  O  O42  1  0.559  0.100  0.281  1.0
  O  O43  1  0.941  0.400  0.781  1.0
  O  O44  1  0.941  0.100  0.281  1.0
  O  O45  1  0.559  0.400  0.781  1.0
  O  O46  1  0.441  0.900  0.719  1.0
  O  O47  1  0.059  0.600  0.219  1.0
  O  O48  1  0.250  0.701  0.642  1.0
  O  O49  1  0.250  0.799  0.142  1.0
  O  O50  1  0.750  0.299  0.358  1.0
  O  O51  1  0.750  0.201  0.858  1.0
[/CIF]
.