The material described by K2RuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(2), three equivalent O(3), and four equivalent O(1) atoms. Ru(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one Ru(1) atom. In the third O site, O(3) is bonded to two equivalent K(1), three equivalent K(2), and one Ru(1) atom to form a mixture of distorted corner and edge-sharing OK5Ru octahedra. The corner-sharing octahedral tilt angles range from 5-29°. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RuO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.154
_cell_length_b   7.828
_cell_length_c   10.510
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   506.347
_cell_formula_units_Z   4
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  0.250  0.492  0.710  1.0
  K  K1  1  0.750  0.508  0.290  1.0
  K  K2  1  0.250  0.992  0.790  1.0
  K  K3  1  0.750  0.008  0.210  1.0
  K  K4  1  0.250  0.338  0.069  1.0
  K  K5  1  0.750  0.662  0.931  1.0
  K  K6  1  0.250  0.838  0.431  1.0
  K  K7  1  0.750  0.162  0.569  1.0
  Ru  Ru8  1  0.250  0.290  0.414  1.0
  Ru  Ru9  1  0.750  0.710  0.586  1.0
  Ru  Ru10  1  0.250  0.790  0.086  1.0
  Ru  Ru11  1  0.750  0.210  0.914  1.0
  O  O12  1  0.017  0.730  0.175  1.0
  O  O13  1  0.517  0.270  0.825  1.0
  O  O14  1  0.483  0.230  0.325  1.0
  O  O15  1  0.983  0.770  0.675  1.0
  O  O16  1  0.983  0.270  0.825  1.0
  O  O17  1  0.483  0.730  0.175  1.0
  O  O18  1  0.517  0.770  0.675  1.0
  O  O19  1  0.017  0.230  0.325  1.0
  O  O20  1  0.250  0.010  0.053  1.0
  O  O21  1  0.750  0.990  0.947  1.0
  O  O22  1  0.250  0.510  0.447  1.0
  O  O23  1  0.750  0.490  0.553  1.0
  O  O24  1  0.750  0.335  0.056  1.0
  O  O25  1  0.250  0.665  0.944  1.0
  O  O26  1  0.750  0.835  0.444  1.0
  O  O27  1  0.250  0.165  0.556  1.0
[/CIF]
.
The material described by K2RuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(2), three equivalent O(3), and four equivalent O(1) atoms. Ru(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Ru(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one Ru(1) atom. In the third O site, O(3) is bonded to two equivalent K(1), three equivalent K(2), and one Ru(1) atom to form a mixture of distorted corner and edge-sharing OK5Ru octahedra. The corner-sharing octahedral tilt angles range from 5-29°. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2RuO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.154
_cell_length_b   7.828
_cell_length_c   10.510
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   506.347
_cell_formula_units_Z   4
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  0.250  0.492  0.710  1.0
  K  K1  1  0.750  0.508  0.290  1.0
  K  K2  1  0.250  0.992  0.790  1.0
  K  K3  1  0.750  0.008  0.210  1.0
  K  K4  1  0.250  0.338  0.069  1.0
  K  K5  1  0.750  0.662  0.931  1.0
  K  K6  1  0.250  0.838  0.431  1.0
  K  K7  1  0.750  0.162  0.569  1.0
  Ru  Ru8  1  0.250  0.290  0.414  1.0
  Ru  Ru9  1  0.750  0.710  0.586  1.0
  Ru  Ru10  1  0.250  0.790  0.086  1.0
  Ru  Ru11  1  0.750  0.210  0.914  1.0
  O  O12  1  0.017  0.730  0.175  1.0
  O  O13  1  0.517  0.270  0.825  1.0
  O  O14  1  0.483  0.230  0.325  1.0
  O  O15  1  0.983  0.770  0.675  1.0
  O  O16  1  0.983  0.270  0.825  1.0
  O  O17  1  0.483  0.730  0.175  1.0
  O  O18  1  0.517  0.770  0.675  1.0
  O  O19  1  0.017  0.230  0.325  1.0
  O  O20  1  0.250  0.010  0.053  1.0
  O  O21  1  0.750  0.990  0.947  1.0
  O  O22  1  0.250  0.510  0.447  1.0
  O  O23  1  0.750  0.490  0.553  1.0
  O  O24  1  0.750  0.335  0.056  1.0
  O  O25  1  0.250  0.665  0.944  1.0
  O  O26  1  0.750  0.835  0.444  1.0
  O  O27  1  0.250  0.165  0.556  1.0
[/CIF]
.