The structure described by K2V2O5 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 8-coordinate geometry to one 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 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) 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 K(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent K(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent V(2) atoms. is represented by the CIF card [CIF]
data_K2V2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.479
_cell_length_b   8.479
_cell_length_c   8.479
_cell_angle_alpha   139.055
_cell_angle_beta   136.998
_cell_angle_gamma   60.878
_symmetry_Int_Tables_number   1
_cell_volume   269.511
_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
  K  K0  1  0.857  0.400  0.488  1.0
  K  K1  1  0.143  0.631  0.543  1.0
  K  K2  1  0.412  0.900  0.543  1.0
  K  K3  1  0.588  0.131  0.488  1.0
  V  V4  1  0.000  0.043  0.043  1.0
  V  V5  1  0.500  0.543  0.043  1.0
  V  V6  1  0.832  0.775  0.107  1.0
  V  V7  1  0.168  0.275  0.943  1.0
  O  O8  1  0.737  0.726  0.445  1.0
  O  O9  1  0.263  0.708  0.989  1.0
  O  O10  1  0.781  0.226  0.989  1.0
  O  O11  1  0.219  0.208  0.445  1.0
  O  O12  1  0.817  0.852  0.951  1.0
  O  O13  1  0.183  0.134  0.035  1.0
  O  O14  1  0.401  0.352  0.035  1.0
  O  O15  1  0.599  0.634  0.951  1.0
  O  O16  1  0.939  0.068  0.507  1.0
  O  O17  1  0.061  0.568  0.129  1.0
[/CIF]
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The structure described by K2V2O5 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 8-coordinate geometry to one 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 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) 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 K(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to three equivalent K(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent V(2) atoms. is represented by the CIF card [CIF]
data_K2V2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.479
_cell_length_b   8.479
_cell_length_c   8.479
_cell_angle_alpha   139.055
_cell_angle_beta   136.998
_cell_angle_gamma   60.878
_symmetry_Int_Tables_number   1
_cell_volume   269.511
_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
  K  K0  1  0.857  0.400  0.488  1.0
  K  K1  1  0.143  0.631  0.543  1.0
  K  K2  1  0.412  0.900  0.543  1.0
  K  K3  1  0.588  0.131  0.488  1.0
  V  V4  1  0.000  0.043  0.043  1.0
  V  V5  1  0.500  0.543  0.043  1.0
  V  V6  1  0.832  0.775  0.107  1.0
  V  V7  1  0.168  0.275  0.943  1.0
  O  O8  1  0.737  0.726  0.445  1.0
  O  O9  1  0.263  0.708  0.989  1.0
  O  O10  1  0.781  0.226  0.989  1.0
  O  O11  1  0.219  0.208  0.445  1.0
  O  O12  1  0.817  0.852  0.951  1.0
  O  O13  1  0.183  0.134  0.035  1.0
  O  O14  1  0.401  0.352  0.035  1.0
  O  O15  1  0.599  0.634  0.951  1.0
  O  O16  1  0.939  0.068  0.507  1.0
  O  O17  1  0.061  0.568  0.129  1.0
[/CIF]
.