The structure described by U6Ni3Cu3Sb8 crystallizes in the monoclinic C2 space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 12-coordinate geometry to one Ni(2), one Cu(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the second U site, U(2) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the third U site, U(3) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the fourth U site, U(4) is bonded in a 12-coordinate geometry to one Ni(2), two equivalent Ni(1), one Cu(1), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 8-coordinate geometry to one U(2), one U(3), two equivalent U(4), one Sb(1), one Sb(2), one Sb(3), and one Sb(4) atom. In the second Ni site, Ni(2) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent U(4), two equivalent Sb(2), and two equivalent Sb(4) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent U(4), two equivalent Sb(1), and two equivalent Sb(3) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to one U(2), one U(3), two equivalent U(1), one Sb(1), one Sb(2), one Sb(3), and one Sb(4) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Cu(1), and one Cu(2) atom. In the second Sb site, Sb(2) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Ni(2), and one Cu(2) atom. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Cu(1), and one Cu(2) atom. In the fourth Sb site, Sb(4) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Ni(2), and one Cu(2) atom. is represented by the CIF file [CIF]
data_U6Cu3Ni3Sb8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.278
_cell_length_b   8.277
_cell_length_c   9.540
_cell_angle_alpha   54.854
_cell_angle_beta   54.851
_cell_angle_gamma   70.363
_symmetry_Int_Tables_number   1
_cell_volume   437.001
_cell_formula_units_Z   1
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  0.874  0.371  0.635  1.0
  U  U1  1  0.629  0.126  0.365  1.0
  U  U2  1  0.369  0.631  0.000  1.0
  U  U3  1  0.131  0.869  0.500  1.0
  U  U4  1  0.242  0.243  0.886  1.0
  U  U5  1  0.757  0.758  0.114  1.0
  Cu  Cu6  1  0.625  0.375  0.500  1.0
  Cu  Cu7  1  0.249  0.250  0.376  1.0
  Cu  Cu8  1  0.750  0.751  0.624  1.0
  Ni  Ni9  1  0.374  0.875  0.125  1.0
  Ni  Ni10  1  0.125  0.625  0.875  1.0
  Ni  Ni11  1  0.875  0.125  0.000  1.0
  Sb  Sb12  1  0.342  0.504  0.408  1.0
  Sb  Sb13  1  0.003  0.838  0.247  1.0
  Sb  Sb14  1  0.162  0.997  0.753  1.0
  Sb  Sb15  1  0.496  0.658  0.592  1.0
  Sb  Sb16  1  0.999  0.342  0.248  1.0
  Sb  Sb17  1  0.841  0.500  0.912  1.0
  Sb  Sb18  1  0.658  0.001  0.752  1.0
  Sb  Sb19  1  0.500  0.159  0.088  1.0
[/CIF]
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The structure described by U6Ni3Cu3Sb8 crystallizes in the monoclinic C2 space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 12-coordinate geometry to one Ni(2), one Cu(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the second U site, U(2) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the third U site, U(3) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. In the fourth U site, U(4) is bonded in a 12-coordinate geometry to one Ni(2), two equivalent Ni(1), one Cu(1), two equivalent Sb(1), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(4) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 8-coordinate geometry to one U(2), one U(3), two equivalent U(4), one Sb(1), one Sb(2), one Sb(3), and one Sb(4) atom. In the second Ni site, Ni(2) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent U(4), two equivalent Sb(2), and two equivalent Sb(4) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent U(4), two equivalent Sb(1), and two equivalent Sb(3) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to one U(2), one U(3), two equivalent U(1), one Sb(1), one Sb(2), one Sb(3), and one Sb(4) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Cu(1), and one Cu(2) atom. In the second Sb site, Sb(2) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Ni(2), and one Cu(2) atom. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Cu(1), and one Cu(2) atom. In the fourth Sb site, Sb(4) is bonded in a 9-coordinate geometry to one U(2), one U(3), two equivalent U(1), two equivalent U(4), one Ni(1), one Ni(2), and one Cu(2) atom. is represented by the CIF file [CIF]
data_U6Cu3Ni3Sb8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.278
_cell_length_b   8.277
_cell_length_c   9.540
_cell_angle_alpha   54.854
_cell_angle_beta   54.851
_cell_angle_gamma   70.363
_symmetry_Int_Tables_number   1
_cell_volume   437.001
_cell_formula_units_Z   1
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  0.874  0.371  0.635  1.0
  U  U1  1  0.629  0.126  0.365  1.0
  U  U2  1  0.369  0.631  0.000  1.0
  U  U3  1  0.131  0.869  0.500  1.0
  U  U4  1  0.242  0.243  0.886  1.0
  U  U5  1  0.757  0.758  0.114  1.0
  Cu  Cu6  1  0.625  0.375  0.500  1.0
  Cu  Cu7  1  0.249  0.250  0.376  1.0
  Cu  Cu8  1  0.750  0.751  0.624  1.0
  Ni  Ni9  1  0.374  0.875  0.125  1.0
  Ni  Ni10  1  0.125  0.625  0.875  1.0
  Ni  Ni11  1  0.875  0.125  0.000  1.0
  Sb  Sb12  1  0.342  0.504  0.408  1.0
  Sb  Sb13  1  0.003  0.838  0.247  1.0
  Sb  Sb14  1  0.162  0.997  0.753  1.0
  Sb  Sb15  1  0.496  0.658  0.592  1.0
  Sb  Sb16  1  0.999  0.342  0.248  1.0
  Sb  Sb17  1  0.841  0.500  0.912  1.0
  Sb  Sb18  1  0.658  0.001  0.752  1.0
  Sb  Sb19  1  0.500  0.159  0.088  1.0
[/CIF]
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