The material structure described by RbK2LaV2O8 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(2) atoms to form distorted RbO6 cuboctahedra that share corners with six equivalent V(1)O4 tetrahedra, edges with six equivalent K(1)O7 hexagonal pyramids, and faces with two equivalent La(1)O6 octahedra. K(1) is bonded to one O(1) and six equivalent O(2) atoms to form distorted KO7 hexagonal pyramids that share corners with six equivalent K(1)O7 hexagonal pyramids,  a cornercorner with one V(1)O4 tetrahedra, edges with three equivalent Rb(1)O6 cuboctahedra, edges with three equivalent La(1)O6 octahedra, and edges with three equivalent V(1)O4 tetrahedra. La(1) is bonded to six equivalent O(2) atoms to form LaO6 octahedra that share corners with six equivalent V(1)O4 tetrahedra, edges with six equivalent K(1)O7 hexagonal pyramids, and faces with two equivalent Rb(1)O6 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 Rb(1)O6 cuboctahedra,  a cornercorner with one K(1)O7 hexagonal pyramid, corners with three equivalent La(1)O6 octahedra, and edges with three equivalent K(1)O7 hexagonal pyramids. 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 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 La(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RbLaV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.191
_cell_length_b   6.191
_cell_length_c   7.971
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   264.548
_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  0.708  1.0
  K  K1  1  0.667  0.333  0.292  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  La  La3  1  0.000  0.000  0.500  1.0
  V  V4  1  0.333  0.667  0.244  1.0
  V  V5  1  0.667  0.333  0.756  1.0
  O  O6  1  0.333  0.667  0.032  1.0
  O  O7  1  0.667  0.333  0.968  1.0
  O  O8  1  0.179  0.821  0.321  1.0
  O  O9  1  0.821  0.179  0.679  1.0
  O  O10  1  0.179  0.358  0.321  1.0
  O  O11  1  0.821  0.642  0.679  1.0
  O  O12  1  0.642  0.821  0.321  1.0
  O  O13  1  0.358  0.179  0.679  1.0
[/CIF]
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The material structure described by RbK2LaV2O8 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(2) atoms to form distorted RbO6 cuboctahedra that share corners with six equivalent V(1)O4 tetrahedra, edges with six equivalent K(1)O7 hexagonal pyramids, and faces with two equivalent La(1)O6 octahedra. K(1) is bonded to one O(1) and six equivalent O(2) atoms to form distorted KO7 hexagonal pyramids that share corners with six equivalent K(1)O7 hexagonal pyramids,  a cornercorner with one V(1)O4 tetrahedra, edges with three equivalent Rb(1)O6 cuboctahedra, edges with three equivalent La(1)O6 octahedra, and edges with three equivalent V(1)O4 tetrahedra. La(1) is bonded to six equivalent O(2) atoms to form LaO6 octahedra that share corners with six equivalent V(1)O4 tetrahedra, edges with six equivalent K(1)O7 hexagonal pyramids, and faces with two equivalent Rb(1)O6 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 Rb(1)O6 cuboctahedra,  a cornercorner with one K(1)O7 hexagonal pyramid, corners with three equivalent La(1)O6 octahedra, and edges with three equivalent K(1)O7 hexagonal pyramids. 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 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 La(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RbLaV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.191
_cell_length_b   6.191
_cell_length_c   7.971
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   264.548
_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  0.708  1.0
  K  K1  1  0.667  0.333  0.292  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  La  La3  1  0.000  0.000  0.500  1.0
  V  V4  1  0.333  0.667  0.244  1.0
  V  V5  1  0.667  0.333  0.756  1.0
  O  O6  1  0.333  0.667  0.032  1.0
  O  O7  1  0.667  0.333  0.968  1.0
  O  O8  1  0.179  0.821  0.321  1.0
  O  O9  1  0.821  0.179  0.679  1.0
  O  O10  1  0.179  0.358  0.321  1.0
  O  O11  1  0.821  0.642  0.679  1.0
  O  O12  1  0.642  0.821  0.321  1.0
  O  O13  1  0.358  0.179  0.679  1.0
[/CIF]
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