The crystal structure described by Rb2V2O5 crystallizes in the orthorhombic Ima2 space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing VO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent Rb(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent V(2) atoms. is represented by the CIF file [CIF]
data_Rb2V2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.552
_cell_length_b   8.552
_cell_length_c   8.552
_cell_angle_alpha   137.085
_cell_angle_beta   134.838
_cell_angle_gamma   64.057
_symmetry_Int_Tables_number   1
_cell_volume   297.948
_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
  Rb  Rb0  1  0.903  0.358  0.504  1.0
  Rb  Rb1  1  0.097  0.601  0.454  1.0
  Rb  Rb2  1  0.353  0.858  0.454  1.0
  Rb  Rb3  1  0.647  0.101  0.504  1.0
  V  V4  1  0.000  0.942  0.942  1.0
  V  V5  1  0.500  0.442  0.942  1.0
  V  V6  1  0.656  0.733  0.889  1.0
  V  V7  1  0.344  0.233  0.076  1.0
  O  O8  1  0.290  0.293  0.567  1.0
  O  O9  1  0.710  0.277  0.003  1.0
  O  O10  1  0.226  0.793  0.003  1.0
  O  O11  1  0.774  0.777  0.567  1.0
  O  O12  1  0.893  0.855  0.030  1.0
  O  O13  1  0.107  0.138  0.962  1.0
  O  O14  1  0.324  0.355  0.962  1.0
  O  O15  1  0.676  0.638  0.030  1.0
  O  O16  1  0.525  0.468  0.493  1.0
  O  O17  1  0.475  0.968  0.942  1.0
[/CIF]
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The crystal structure described by Rb2V2O5 crystallizes in the orthorhombic Ima2 space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form corner-sharing VO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent Rb(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Rb(1) and two equivalent V(2) atoms. is represented by the CIF file [CIF]
data_Rb2V2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.552
_cell_length_b   8.552
_cell_length_c   8.552
_cell_angle_alpha   137.085
_cell_angle_beta   134.838
_cell_angle_gamma   64.057
_symmetry_Int_Tables_number   1
_cell_volume   297.948
_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
  Rb  Rb0  1  0.903  0.358  0.504  1.0
  Rb  Rb1  1  0.097  0.601  0.454  1.0
  Rb  Rb2  1  0.353  0.858  0.454  1.0
  Rb  Rb3  1  0.647  0.101  0.504  1.0
  V  V4  1  0.000  0.942  0.942  1.0
  V  V5  1  0.500  0.442  0.942  1.0
  V  V6  1  0.656  0.733  0.889  1.0
  V  V7  1  0.344  0.233  0.076  1.0
  O  O8  1  0.290  0.293  0.567  1.0
  O  O9  1  0.710  0.277  0.003  1.0
  O  O10  1  0.226  0.793  0.003  1.0
  O  O11  1  0.774  0.777  0.567  1.0
  O  O12  1  0.893  0.855  0.030  1.0
  O  O13  1  0.107  0.138  0.962  1.0
  O  O14  1  0.324  0.355  0.962  1.0
  O  O15  1  0.676  0.638  0.030  1.0
  O  O16  1  0.525  0.468  0.493  1.0
  O  O17  1  0.475  0.968  0.942  1.0
[/CIF]
.