The compound described by K2UBr5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. U(1) is bonded to one Br(1), one Br(3), one Br(4), and four equivalent Br(2) atoms to form distorted edge-sharing UBr7 pentagonal bipyramids. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent K(1) and one U(1) atom to form BrK4U trigonal bipyramids that share corners with four equivalent Br(3)K4U trigonal bipyramids, corners with five equivalent Br(4)K4U trigonal bipyramids, corners with eight equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(3)K4U trigonal bipyramid, edges with two equivalent Br(1)K4U trigonal bipyramids, edges with two equivalent Br(4)K4U trigonal bipyramids, edges with two equivalent Br(2)K2U2 trigonal pyramids, and  a faceface with one Br(3)K4U trigonal bipyramid. In the second Br site, Br(2) is bonded to two equivalent K(1) and two equivalent U(1) atoms to form distorted BrK2U2 trigonal pyramids that share corners with two equivalent Br(3)K4U trigonal bipyramids, corners with two equivalent Br(4)K4U trigonal bipyramids, corners with four equivalent Br(1)K4U trigonal bipyramids, corners with six equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(1)K4U trigonal bipyramid, edges with two equivalent Br(3)K4U trigonal bipyramids, edges with two equivalent Br(4)K4U trigonal bipyramids, and  an edgeedge with one Br(2)K2U2 trigonal pyramid. In the third Br site, Br(3) is bonded to four equivalent K(1) and one U(1) atom to form BrK4U trigonal bipyramids that share  a cornercorner with one Br(4)K4U trigonal bipyramid, corners with four equivalent Br(1)K4U trigonal bipyramids, corners with four equivalent Br(3)K4U trigonal bipyramids, corners with four equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(1)K4U trigonal bipyramid, edges with four equivalent Br(4)K4U trigonal bipyramids, edges with four equivalent Br(2)K2U2 trigonal pyramids, and  a faceface with one Br(1)K4U trigonal bipyramid. In the fourth Br site, Br(4) is bonded to four equivalent K(1) and one U(1) atom to form distorted BrK4U trigonal bipyramids that share  a cornercorner with one Br(3)K4U trigonal bipyramid, corners with four equivalent Br(4)K4U trigonal bipyramids, corners with five equivalent Br(1)K4U trigonal bipyramids, corners with four equivalent Br(2)K2U2 trigonal pyramids, edges with two equivalent Br(1)K4U trigonal bipyramids, edges with four equivalent Br(3)K4U trigonal bipyramids, and edges with four equivalent Br(2)K2U2 trigonal pyramids. is represented by the CIF card [CIF]
data_K2UBr5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.479
_cell_length_b   9.229
_cell_length_c   13.438
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1051.574
_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  0.447  0.504  0.672  1.0
  K  K1  1  0.947  0.496  0.828  1.0
  K  K2  1  0.553  0.004  0.328  1.0
  K  K3  1  0.053  0.996  0.172  1.0
  K  K4  1  0.553  0.496  0.328  1.0
  K  K5  1  0.053  0.504  0.172  1.0
  K  K6  1  0.447  0.996  0.672  1.0
  K  K7  1  0.947  0.004  0.828  1.0
  U  U8  1  0.923  0.750  0.505  1.0
  U  U9  1  0.577  0.750  0.005  1.0
  U  U10  1  0.077  0.250  0.495  1.0
  U  U11  1  0.423  0.250  0.995  1.0
  Br  Br12  1  0.570  0.750  0.507  1.0
  Br  Br13  1  0.333  0.955  0.920  1.0
  Br  Br14  1  0.833  0.045  0.580  1.0
  Br  Br15  1  0.667  0.455  0.080  1.0
  Br  Br16  1  0.070  0.250  0.993  1.0
  Br  Br17  1  0.666  0.750  0.792  1.0
  Br  Br18  1  0.930  0.750  0.007  1.0
  Br  Br19  1  0.430  0.250  0.493  1.0
  Br  Br20  1  0.128  0.750  0.683  1.0
  Br  Br21  1  0.166  0.250  0.708  1.0
  Br  Br22  1  0.334  0.250  0.208  1.0
  Br  Br23  1  0.834  0.750  0.292  1.0
  Br  Br24  1  0.667  0.045  0.080  1.0
  Br  Br25  1  0.628  0.250  0.817  1.0
  Br  Br26  1  0.872  0.250  0.317  1.0
  Br  Br27  1  0.372  0.750  0.183  1.0
  Br  Br28  1  0.833  0.455  0.580  1.0
  Br  Br29  1  0.333  0.545  0.920  1.0
  Br  Br30  1  0.167  0.955  0.420  1.0
  Br  Br31  1  0.167  0.545  0.420  1.0
[/CIF]
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The compound described by K2UBr5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. U(1) is bonded to one Br(1), one Br(3), one Br(4), and four equivalent Br(2) atoms to form distorted edge-sharing UBr7 pentagonal bipyramids. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent K(1) and one U(1) atom to form BrK4U trigonal bipyramids that share corners with four equivalent Br(3)K4U trigonal bipyramids, corners with five equivalent Br(4)K4U trigonal bipyramids, corners with eight equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(3)K4U trigonal bipyramid, edges with two equivalent Br(1)K4U trigonal bipyramids, edges with two equivalent Br(4)K4U trigonal bipyramids, edges with two equivalent Br(2)K2U2 trigonal pyramids, and  a faceface with one Br(3)K4U trigonal bipyramid. In the second Br site, Br(2) is bonded to two equivalent K(1) and two equivalent U(1) atoms to form distorted BrK2U2 trigonal pyramids that share corners with two equivalent Br(3)K4U trigonal bipyramids, corners with two equivalent Br(4)K4U trigonal bipyramids, corners with four equivalent Br(1)K4U trigonal bipyramids, corners with six equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(1)K4U trigonal bipyramid, edges with two equivalent Br(3)K4U trigonal bipyramids, edges with two equivalent Br(4)K4U trigonal bipyramids, and  an edgeedge with one Br(2)K2U2 trigonal pyramid. In the third Br site, Br(3) is bonded to four equivalent K(1) and one U(1) atom to form BrK4U trigonal bipyramids that share  a cornercorner with one Br(4)K4U trigonal bipyramid, corners with four equivalent Br(1)K4U trigonal bipyramids, corners with four equivalent Br(3)K4U trigonal bipyramids, corners with four equivalent Br(2)K2U2 trigonal pyramids,  an edgeedge with one Br(1)K4U trigonal bipyramid, edges with four equivalent Br(4)K4U trigonal bipyramids, edges with four equivalent Br(2)K2U2 trigonal pyramids, and  a faceface with one Br(1)K4U trigonal bipyramid. In the fourth Br site, Br(4) is bonded to four equivalent K(1) and one U(1) atom to form distorted BrK4U trigonal bipyramids that share  a cornercorner with one Br(3)K4U trigonal bipyramid, corners with four equivalent Br(4)K4U trigonal bipyramids, corners with five equivalent Br(1)K4U trigonal bipyramids, corners with four equivalent Br(2)K2U2 trigonal pyramids, edges with two equivalent Br(1)K4U trigonal bipyramids, edges with four equivalent Br(3)K4U trigonal bipyramids, and edges with four equivalent Br(2)K2U2 trigonal pyramids. is represented by the CIF card [CIF]
data_K2UBr5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.479
_cell_length_b   9.229
_cell_length_c   13.438
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1051.574
_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  0.447  0.504  0.672  1.0
  K  K1  1  0.947  0.496  0.828  1.0
  K  K2  1  0.553  0.004  0.328  1.0
  K  K3  1  0.053  0.996  0.172  1.0
  K  K4  1  0.553  0.496  0.328  1.0
  K  K5  1  0.053  0.504  0.172  1.0
  K  K6  1  0.447  0.996  0.672  1.0
  K  K7  1  0.947  0.004  0.828  1.0
  U  U8  1  0.923  0.750  0.505  1.0
  U  U9  1  0.577  0.750  0.005  1.0
  U  U10  1  0.077  0.250  0.495  1.0
  U  U11  1  0.423  0.250  0.995  1.0
  Br  Br12  1  0.570  0.750  0.507  1.0
  Br  Br13  1  0.333  0.955  0.920  1.0
  Br  Br14  1  0.833  0.045  0.580  1.0
  Br  Br15  1  0.667  0.455  0.080  1.0
  Br  Br16  1  0.070  0.250  0.993  1.0
  Br  Br17  1  0.666  0.750  0.792  1.0
  Br  Br18  1  0.930  0.750  0.007  1.0
  Br  Br19  1  0.430  0.250  0.493  1.0
  Br  Br20  1  0.128  0.750  0.683  1.0
  Br  Br21  1  0.166  0.250  0.708  1.0
  Br  Br22  1  0.334  0.250  0.208  1.0
  Br  Br23  1  0.834  0.750  0.292  1.0
  Br  Br24  1  0.667  0.045  0.080  1.0
  Br  Br25  1  0.628  0.250  0.817  1.0
  Br  Br26  1  0.872  0.250  0.317  1.0
  Br  Br27  1  0.372  0.750  0.183  1.0
  Br  Br28  1  0.833  0.455  0.580  1.0
  Br  Br29  1  0.333  0.545  0.920  1.0
  Br  Br30  1  0.167  0.955  0.420  1.0
  Br  Br31  1  0.167  0.545  0.420  1.0
[/CIF]
.