The structure described by U3Co7B2 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 20-coordinate geometry to two equivalent U(2), twelve equivalent Co(2), three equivalent B(1), and three equivalent B(2) atoms. In the second U site, U(2) is bonded in a 16-coordinate geometry to one U(1), three equivalent U(2), three equivalent Co(1), and nine equivalent Co(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent U(2) and six equivalent Co(2) atoms to form edge-sharing CoU6Co6 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent U(1), three equivalent U(2), one Co(1), one B(1), and one B(2) atom. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent U(1) and six equivalent Co(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent U(1) and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_U3Co7B2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.938
_cell_length_b   4.938
_cell_length_c   13.790
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   291.165
_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
  U  U0  1  0.333  0.667  0.250  1.0
  U  U1  1  0.667  0.333  0.750  1.0
  U  U2  1  0.333  0.667  0.029  1.0
  U  U3  1  0.667  0.333  0.529  1.0
  U  U4  1  0.667  0.333  0.971  1.0
  U  U5  1  0.333  0.667  0.471  1.0
  Co  Co6  1  1.000  1.000  0.000  1.0
  Co  Co7  1  1.000  1.000  0.500  1.0
  Co  Co8  1  0.835  0.669  0.147  1.0
  Co  Co9  1  0.165  0.835  0.647  1.0
  Co  Co10  1  0.669  0.835  0.647  1.0
  Co  Co11  1  0.331  0.165  0.147  1.0
  Co  Co12  1  0.835  0.165  0.147  1.0
  Co  Co13  1  0.165  0.331  0.853  1.0
  Co  Co14  1  0.165  0.835  0.853  1.0
  Co  Co15  1  0.165  0.331  0.647  1.0
  Co  Co16  1  0.669  0.835  0.853  1.0
  Co  Co17  1  0.331  0.165  0.353  1.0
  Co  Co18  1  0.835  0.669  0.353  1.0
  Co  Co19  1  0.835  0.165  0.353  1.0
  B  B20  1  0.000  1.000  0.250  1.0
  B  B21  1  1.000  0.000  0.750  1.0
  B  B22  1  0.333  0.667  0.750  1.0
  B  B23  1  0.667  0.333  0.250  1.0
[/CIF]
.
The structure described by U3Co7B2 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 20-coordinate geometry to two equivalent U(2), twelve equivalent Co(2), three equivalent B(1), and three equivalent B(2) atoms. In the second U site, U(2) is bonded in a 16-coordinate geometry to one U(1), three equivalent U(2), three equivalent Co(1), and nine equivalent Co(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent U(2) and six equivalent Co(2) atoms to form edge-sharing CoU6Co6 cuboctahedra. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent U(1), three equivalent U(2), one Co(1), one B(1), and one B(2) atom. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent U(1) and six equivalent Co(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent U(1) and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_U3Co7B2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.938
_cell_length_b   4.938
_cell_length_c   13.790
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   291.165
_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
  U  U0  1  0.333  0.667  0.250  1.0
  U  U1  1  0.667  0.333  0.750  1.0
  U  U2  1  0.333  0.667  0.029  1.0
  U  U3  1  0.667  0.333  0.529  1.0
  U  U4  1  0.667  0.333  0.971  1.0
  U  U5  1  0.333  0.667  0.471  1.0
  Co  Co6  1  1.000  1.000  0.000  1.0
  Co  Co7  1  1.000  1.000  0.500  1.0
  Co  Co8  1  0.835  0.669  0.147  1.0
  Co  Co9  1  0.165  0.835  0.647  1.0
  Co  Co10  1  0.669  0.835  0.647  1.0
  Co  Co11  1  0.331  0.165  0.147  1.0
  Co  Co12  1  0.835  0.165  0.147  1.0
  Co  Co13  1  0.165  0.331  0.853  1.0
  Co  Co14  1  0.165  0.835  0.853  1.0
  Co  Co15  1  0.165  0.331  0.647  1.0
  Co  Co16  1  0.669  0.835  0.853  1.0
  Co  Co17  1  0.331  0.165  0.353  1.0
  Co  Co18  1  0.835  0.669  0.353  1.0
  Co  Co19  1  0.835  0.165  0.353  1.0
  B  B20  1  0.000  1.000  0.250  1.0
  B  B21  1  1.000  0.000  0.750  1.0
  B  B22  1  0.333  0.667  0.750  1.0
  B  B23  1  0.667  0.333  0.250  1.0
[/CIF]
.