The compound described by U3Co4Ge7 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 16-coordinate geometry to four equivalent Co(1), four equivalent Co(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. In the second U site, U(2) is bonded to four equivalent Ge(3) and eight equivalent Ge(1) atoms to form a mixture of distorted corner and face-sharing UGe12 cuboctahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Ge(2) atoms. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to four equivalent U(1), one Ge(2), and four equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to two equivalent U(1), two equivalent U(2), and two equivalent Co(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Co(2), and four equivalent Co(1) atoms. In the third Ge site, Ge(3) is bonded in a square co-planar geometry to four equivalent U(2) atoms. is represented by the CIF file [CIF]
data_U3Co4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.890
_cell_length_b   13.890
_cell_length_c   13.890
_cell_angle_alpha   162.866
_cell_angle_beta   162.866
_cell_angle_gamma   24.323
_symmetry_Int_Tables_number   1
_cell_volume   232.508
_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  0.673  0.673  0.000  1.0
  U  U1  1  0.327  0.327  0.000  1.0
  U  U2  1  0.000  0.000  0.000  1.0
  Co  Co3  1  0.250  0.750  0.500  1.0
  Co  Co4  1  0.750  0.250  0.500  1.0
  Co  Co5  1  0.882  0.882  0.000  1.0
  Co  Co6  1  0.118  0.118  0.000  1.0
  Ge  Ge7  1  0.081  0.581  0.500  1.0
  Ge  Ge8  1  0.797  0.797  0.000  1.0
  Ge  Ge9  1  0.203  0.203  0.000  1.0
  Ge  Ge10  1  0.500  0.500  0.000  1.0
  Ge  Ge11  1  0.419  0.919  0.500  1.0
  Ge  Ge12  1  0.919  0.419  0.500  1.0
  Ge  Ge13  1  0.581  0.081  0.500  1.0
[/CIF]
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The compound described by U3Co4Ge7 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 16-coordinate geometry to four equivalent Co(1), four equivalent Co(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. In the second U site, U(2) is bonded to four equivalent Ge(3) and eight equivalent Ge(1) atoms to form a mixture of distorted corner and face-sharing UGe12 cuboctahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Ge(2) atoms. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to four equivalent U(1), one Ge(2), and four equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to two equivalent U(1), two equivalent U(2), and two equivalent Co(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent U(1), one Co(2), and four equivalent Co(1) atoms. In the third Ge site, Ge(3) is bonded in a square co-planar geometry to four equivalent U(2) atoms. is represented by the CIF file [CIF]
data_U3Co4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.890
_cell_length_b   13.890
_cell_length_c   13.890
_cell_angle_alpha   162.866
_cell_angle_beta   162.866
_cell_angle_gamma   24.323
_symmetry_Int_Tables_number   1
_cell_volume   232.508
_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  0.673  0.673  0.000  1.0
  U  U1  1  0.327  0.327  0.000  1.0
  U  U2  1  0.000  0.000  0.000  1.0
  Co  Co3  1  0.250  0.750  0.500  1.0
  Co  Co4  1  0.750  0.250  0.500  1.0
  Co  Co5  1  0.882  0.882  0.000  1.0
  Co  Co6  1  0.118  0.118  0.000  1.0
  Ge  Ge7  1  0.081  0.581  0.500  1.0
  Ge  Ge8  1  0.797  0.797  0.000  1.0
  Ge  Ge9  1  0.203  0.203  0.000  1.0
  Ge  Ge10  1  0.500  0.500  0.000  1.0
  Ge  Ge11  1  0.419  0.919  0.500  1.0
  Ge  Ge12  1  0.919  0.419  0.500  1.0
  Ge  Ge13  1  0.581  0.081  0.500  1.0
[/CIF]
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