The crystal structure described by Rb2V4O9 crystallizes in the tetragonal P4_2/m space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(3) and eight equivalent O(2) atoms. V(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), and three equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal pyramidal geometry to four equivalent V(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1) and three equivalent V(1) atoms. is represented by the CIF card [CIF]
data_Rb2V4O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.653
_cell_length_b   5.653
_cell_length_c   14.864
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   475.021
_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  0.271  0.248  0.500  1.0
  Rb  Rb1  1  0.752  0.271  0.000  1.0
  Rb  Rb2  1  0.248  0.729  0.000  1.0
  Rb  Rb3  1  0.729  0.752  0.500  1.0
  V  V4  1  0.286  0.151  0.200  1.0
  V  V5  1  0.849  0.286  0.700  1.0
  V  V6  1  0.151  0.714  0.700  1.0
  V  V7  1  0.714  0.849  0.200  1.0
  V  V8  1  0.714  0.849  0.800  1.0
  V  V9  1  0.151  0.714  0.300  1.0
  V  V10  1  0.849  0.286  0.300  1.0
  V  V11  1  0.286  0.151  0.800  1.0
  O  O12  1  0.000  0.000  0.250  1.0
  O  O13  1  0.000  0.000  0.750  1.0
  O  O14  1  0.223  0.235  0.097  1.0
  O  O15  1  0.765  0.223  0.597  1.0
  O  O16  1  0.235  0.777  0.597  1.0
  O  O17  1  0.777  0.765  0.097  1.0
  O  O18  1  0.777  0.765  0.903  1.0
  O  O19  1  0.235  0.777  0.403  1.0
  O  O20  1  0.765  0.223  0.403  1.0
  O  O21  1  0.223  0.235  0.903  1.0
  O  O22  1  0.184  0.378  0.289  1.0
  O  O23  1  0.622  0.184  0.789  1.0
  O  O24  1  0.378  0.816  0.789  1.0
  O  O25  1  0.816  0.622  0.289  1.0
  O  O26  1  0.816  0.622  0.711  1.0
  O  O27  1  0.378  0.816  0.211  1.0
  O  O28  1  0.622  0.184  0.211  1.0
  O  O29  1  0.184  0.378  0.711  1.0
[/CIF]
.
The crystal structure described by Rb2V4O9 crystallizes in the tetragonal P4_2/m space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(3) and eight equivalent O(2) atoms. V(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), and three equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal pyramidal geometry to four equivalent V(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to four equivalent Rb(1) and one V(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1) and three equivalent V(1) atoms. is represented by the CIF card [CIF]
data_Rb2V4O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.653
_cell_length_b   5.653
_cell_length_c   14.864
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   475.021
_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  0.271  0.248  0.500  1.0
  Rb  Rb1  1  0.752  0.271  0.000  1.0
  Rb  Rb2  1  0.248  0.729  0.000  1.0
  Rb  Rb3  1  0.729  0.752  0.500  1.0
  V  V4  1  0.286  0.151  0.200  1.0
  V  V5  1  0.849  0.286  0.700  1.0
  V  V6  1  0.151  0.714  0.700  1.0
  V  V7  1  0.714  0.849  0.200  1.0
  V  V8  1  0.714  0.849  0.800  1.0
  V  V9  1  0.151  0.714  0.300  1.0
  V  V10  1  0.849  0.286  0.300  1.0
  V  V11  1  0.286  0.151  0.800  1.0
  O  O12  1  0.000  0.000  0.250  1.0
  O  O13  1  0.000  0.000  0.750  1.0
  O  O14  1  0.223  0.235  0.097  1.0
  O  O15  1  0.765  0.223  0.597  1.0
  O  O16  1  0.235  0.777  0.597  1.0
  O  O17  1  0.777  0.765  0.097  1.0
  O  O18  1  0.777  0.765  0.903  1.0
  O  O19  1  0.235  0.777  0.403  1.0
  O  O20  1  0.765  0.223  0.403  1.0
  O  O21  1  0.223  0.235  0.903  1.0
  O  O22  1  0.184  0.378  0.289  1.0
  O  O23  1  0.622  0.184  0.789  1.0
  O  O24  1  0.378  0.816  0.789  1.0
  O  O25  1  0.816  0.622  0.289  1.0
  O  O26  1  0.816  0.622  0.711  1.0
  O  O27  1  0.378  0.816  0.211  1.0
  O  O28  1  0.622  0.184  0.211  1.0
  O  O29  1  0.184  0.378  0.711  1.0
[/CIF]
.