The crystal structure described by KUCrO6 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), two equivalent O(3), three equivalent O(5), and three equivalent O(6) atoms. U(1) is bonded to one O(1), one O(3), one O(5), two equivalent O(2), and two equivalent O(4) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent Cr(1)O5 trigonal bipyramids. Cr(1) is bonded to one O(2), one O(4), one O(6), and two equivalent O(1) atoms to form distorted CrO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Cr(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one U(1), and two equivalent Cr(1) atoms. In the third O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent U(1), and one Cr(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Cr(1) atom. In the sixth O site, O(5) is bonded in a single-bond geometry to three equivalent K(1) and one U(1) atom. is represented by the CIF file [CIF]
data_KUCrO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.417
_cell_length_b   6.851
_cell_length_c   10.548
_cell_angle_alpha   76.309
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   590.935
_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  0.264  0.037  0.149  1.0
  K  K1  1  0.764  0.963  0.351  1.0
  K  K2  1  0.736  0.963  0.851  1.0
  K  K3  1  0.236  0.037  0.649  1.0
  U  U4  1  0.979  0.514  0.177  1.0
  U  U5  1  0.479  0.486  0.323  1.0
  U  U6  1  0.021  0.486  0.823  1.0
  U  U7  1  0.521  0.514  0.677  1.0
  Cr  Cr8  1  0.643  0.383  0.053  1.0
  Cr  Cr9  1  0.143  0.617  0.447  1.0
  Cr  Cr10  1  0.357  0.617  0.947  1.0
  Cr  Cr11  1  0.857  0.383  0.553  1.0
  O  O12  1  0.563  0.546  0.895  1.0
  O  O13  1  0.063  0.454  0.605  1.0
  O  O14  1  0.437  0.454  0.105  1.0
  O  O15  1  0.937  0.546  0.395  1.0
  O  O16  1  0.709  0.418  0.213  1.0
  O  O17  1  0.209  0.582  0.287  1.0
  O  O18  1  0.291  0.582  0.787  1.0
  O  O19  1  0.791  0.418  0.713  1.0
  O  O20  1  0.020  0.243  0.233  1.0
  O  O21  1  0.520  0.757  0.267  1.0
  O  O22  1  0.980  0.757  0.767  1.0
  O  O23  1  0.480  0.243  0.733  1.0
  O  O24  1  0.843  0.470  0.992  1.0
  O  O25  1  0.343  0.530  0.508  1.0
  O  O26  1  0.157  0.530  0.008  1.0
  O  O27  1  0.657  0.470  0.492  1.0
  O  O28  1  0.937  0.785  0.127  1.0
  O  O29  1  0.437  0.215  0.373  1.0
  O  O30  1  0.063  0.215  0.873  1.0
  O  O31  1  0.563  0.785  0.627  1.0
  O  O32  1  0.634  0.147  0.057  1.0
  O  O33  1  0.134  0.853  0.443  1.0
  O  O34  1  0.366  0.853  0.943  1.0
  O  O35  1  0.866  0.147  0.557  1.0
[/CIF]
.
The crystal structure described by KUCrO6 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), two equivalent O(3), three equivalent O(5), and three equivalent O(6) atoms. U(1) is bonded to one O(1), one O(3), one O(5), two equivalent O(2), and two equivalent O(4) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent Cr(1)O5 trigonal bipyramids. Cr(1) is bonded to one O(2), one O(4), one O(6), and two equivalent O(1) atoms to form distorted CrO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to three equivalent K(1) and one Cr(1) atom. In the second O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one U(1), and two equivalent Cr(1) atoms. In the third O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent U(1), and one Cr(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Cr(1) atom. In the sixth O site, O(5) is bonded in a single-bond geometry to three equivalent K(1) and one U(1) atom. is represented by the CIF file [CIF]
data_KUCrO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.417
_cell_length_b   6.851
_cell_length_c   10.548
_cell_angle_alpha   76.309
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   590.935
_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  0.264  0.037  0.149  1.0
  K  K1  1  0.764  0.963  0.351  1.0
  K  K2  1  0.736  0.963  0.851  1.0
  K  K3  1  0.236  0.037  0.649  1.0
  U  U4  1  0.979  0.514  0.177  1.0
  U  U5  1  0.479  0.486  0.323  1.0
  U  U6  1  0.021  0.486  0.823  1.0
  U  U7  1  0.521  0.514  0.677  1.0
  Cr  Cr8  1  0.643  0.383  0.053  1.0
  Cr  Cr9  1  0.143  0.617  0.447  1.0
  Cr  Cr10  1  0.357  0.617  0.947  1.0
  Cr  Cr11  1  0.857  0.383  0.553  1.0
  O  O12  1  0.563  0.546  0.895  1.0
  O  O13  1  0.063  0.454  0.605  1.0
  O  O14  1  0.437  0.454  0.105  1.0
  O  O15  1  0.937  0.546  0.395  1.0
  O  O16  1  0.709  0.418  0.213  1.0
  O  O17  1  0.209  0.582  0.287  1.0
  O  O18  1  0.291  0.582  0.787  1.0
  O  O19  1  0.791  0.418  0.713  1.0
  O  O20  1  0.020  0.243  0.233  1.0
  O  O21  1  0.520  0.757  0.267  1.0
  O  O22  1  0.980  0.757  0.767  1.0
  O  O23  1  0.480  0.243  0.733  1.0
  O  O24  1  0.843  0.470  0.992  1.0
  O  O25  1  0.343  0.530  0.508  1.0
  O  O26  1  0.157  0.530  0.008  1.0
  O  O27  1  0.657  0.470  0.492  1.0
  O  O28  1  0.937  0.785  0.127  1.0
  O  O29  1  0.437  0.215  0.373  1.0
  O  O30  1  0.063  0.215  0.873  1.0
  O  O31  1  0.563  0.785  0.627  1.0
  O  O32  1  0.634  0.147  0.057  1.0
  O  O33  1  0.134  0.853  0.443  1.0
  O  O34  1  0.366  0.853  0.943  1.0
  O  O35  1  0.866  0.147  0.557  1.0
[/CIF]
.