The material described by KOs2O6 crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent O(3) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(3) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. In the second Os site, Os(2) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 36-44°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Os(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(2), one Os(1), and one Os(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), one K(2), and two equivalent Os(1) atoms. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Os(1) and one Os(2) atom. is represented by the CIF file [CIF]
data_K(OsO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.182
_cell_length_b   7.182
_cell_length_c   7.182
_cell_angle_alpha   59.908
_cell_angle_beta   59.908
_cell_angle_gamma   59.908
_symmetry_Int_Tables_number   1
_cell_volume   261.385
_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  0.719  0.719  0.719  1.0
  K  K1  1  0.466  0.466  0.466  1.0
  Os  Os2  1  0.125  0.125  0.625  1.0
  Os  Os3  1  0.625  0.125  0.125  1.0
  Os  Os4  1  0.125  0.625  0.125  1.0
  Os  Os5  1  0.125  0.125  0.125  1.0
  O  O6  1  0.192  0.815  0.815  1.0
  O  O7  1  0.815  0.192  0.815  1.0
  O  O8  1  0.815  0.815  0.192  1.0
  O  O9  1  0.196  0.196  0.807  1.0
  O  O10  1  0.062  0.448  0.448  1.0
  O  O11  1  0.448  0.062  0.448  1.0
  O  O12  1  0.807  0.196  0.196  1.0
  O  O13  1  0.196  0.807  0.196  1.0
  O  O14  1  0.067  0.067  0.436  1.0
  O  O15  1  0.448  0.448  0.062  1.0
  O  O16  1  0.436  0.067  0.067  1.0
  O  O17  1  0.067  0.436  0.067  1.0
[/CIF]
.
The material described by KOs2O6 crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent O(3) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(3) atoms. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. In the second Os site, Os(2) is bonded to three equivalent O(2) and three equivalent O(4) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 36-44°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Os(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(2), one Os(1), and one Os(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), one K(2), and two equivalent Os(1) atoms. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Os(1) and one Os(2) atom. is represented by the CIF file [CIF]
data_K(OsO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.182
_cell_length_b   7.182
_cell_length_c   7.182
_cell_angle_alpha   59.908
_cell_angle_beta   59.908
_cell_angle_gamma   59.908
_symmetry_Int_Tables_number   1
_cell_volume   261.385
_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  0.719  0.719  0.719  1.0
  K  K1  1  0.466  0.466  0.466  1.0
  Os  Os2  1  0.125  0.125  0.625  1.0
  Os  Os3  1  0.625  0.125  0.125  1.0
  Os  Os4  1  0.125  0.625  0.125  1.0
  Os  Os5  1  0.125  0.125  0.125  1.0
  O  O6  1  0.192  0.815  0.815  1.0
  O  O7  1  0.815  0.192  0.815  1.0
  O  O8  1  0.815  0.815  0.192  1.0
  O  O9  1  0.196  0.196  0.807  1.0
  O  O10  1  0.062  0.448  0.448  1.0
  O  O11  1  0.448  0.062  0.448  1.0
  O  O12  1  0.807  0.196  0.196  1.0
  O  O13  1  0.196  0.807  0.196  1.0
  O  O14  1  0.067  0.067  0.436  1.0
  O  O15  1  0.448  0.448  0.062  1.0
  O  O16  1  0.436  0.067  0.067  1.0
  O  O17  1  0.067  0.436  0.067  1.0
[/CIF]
.