The crystal structure described by RbK2YV2O8 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(1) and six equivalent O(2) atoms to form RbO12 cuboctahedra that share edges with six equivalent Rb(1)O12 cuboctahedra, edges with six equivalent V(1)O4 tetrahedra, and faces with two equivalent Y(1)O6 octahedra. K(1) is bonded in a 7-coordinate geometry to one O(1) and six equivalent O(2) atoms. Y(1) is bonded to six equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent V(1)O4 tetrahedra and faces with two equivalent Rb(1)O12 cuboctahedra. V(1) is bonded to one O(1) and three equivalent O(2) atoms to form VO4 tetrahedra that share corners with three equivalent Y(1)O6 octahedra and edges with three equivalent Rb(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 16°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to three equivalent Rb(1), one K(1), and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Rb(1), two equivalent K(1), one Y(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RbYV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.041
_cell_length_b   6.041
_cell_length_c   7.855
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   248.268
_cell_formula_units_Z   1
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  0.333  0.667  0.702  1.0
  K  K1  1  0.667  0.333  0.298  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  Y  Y3  1  0.000  0.000  0.500  1.0
  V  V4  1  0.333  0.667  0.253  1.0
  V  V5  1  0.667  0.333  0.747  1.0
  O  O6  1  0.333  0.667  0.039  1.0
  O  O7  1  0.667  0.333  0.961  1.0
  O  O8  1  0.174  0.826  0.329  1.0
  O  O9  1  0.826  0.174  0.671  1.0
  O  O10  1  0.174  0.349  0.329  1.0
  O  O11  1  0.826  0.651  0.671  1.0
  O  O12  1  0.651  0.826  0.329  1.0
  O  O13  1  0.349  0.174  0.671  1.0
[/CIF]
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The crystal structure described by RbK2YV2O8 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(1) and six equivalent O(2) atoms to form RbO12 cuboctahedra that share edges with six equivalent Rb(1)O12 cuboctahedra, edges with six equivalent V(1)O4 tetrahedra, and faces with two equivalent Y(1)O6 octahedra. K(1) is bonded in a 7-coordinate geometry to one O(1) and six equivalent O(2) atoms. Y(1) is bonded to six equivalent O(2) atoms to form YO6 octahedra that share corners with six equivalent V(1)O4 tetrahedra and faces with two equivalent Rb(1)O12 cuboctahedra. V(1) is bonded to one O(1) and three equivalent O(2) atoms to form VO4 tetrahedra that share corners with three equivalent Y(1)O6 octahedra and edges with three equivalent Rb(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 16°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to three equivalent Rb(1), one K(1), and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Rb(1), two equivalent K(1), one Y(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RbYV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.041
_cell_length_b   6.041
_cell_length_c   7.855
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   248.268
_cell_formula_units_Z   1
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  0.333  0.667  0.702  1.0
  K  K1  1  0.667  0.333  0.298  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  Y  Y3  1  0.000  0.000  0.500  1.0
  V  V4  1  0.333  0.667  0.253  1.0
  V  V5  1  0.667  0.333  0.747  1.0
  O  O6  1  0.333  0.667  0.039  1.0
  O  O7  1  0.667  0.333  0.961  1.0
  O  O8  1  0.174  0.826  0.329  1.0
  O  O9  1  0.826  0.174  0.671  1.0
  O  O10  1  0.174  0.349  0.329  1.0
  O  O11  1  0.826  0.651  0.671  1.0
  O  O12  1  0.651  0.826  0.329  1.0
  O  O13  1  0.349  0.174  0.671  1.0
[/CIF]
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