The crystal structure described by U3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second U site, U(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form edge-sharing UGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent U(1), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one U(2), two equivalent U(1), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent U(2), four equivalent U(1), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_U3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.994
_cell_length_b   7.994
_cell_length_c   7.994
_cell_angle_alpha   148.282
_cell_angle_beta   131.887
_cell_angle_gamma   58.781
_symmetry_Int_Tables_number   1
_cell_volume   198.314
_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  0.871  0.371  0.500  1.0
  U  U1  1  0.129  0.629  0.500  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  Cu  Cu3  1  0.858  0.169  0.689  1.0
  Cu  Cu4  1  0.142  0.831  0.311  1.0
  Cu  Cu5  1  0.480  0.169  0.311  1.0
  Cu  Cu6  1  0.520  0.831  0.689  1.0
  Ge  Ge7  1  0.285  0.285  0.000  1.0
  Ge  Ge8  1  0.807  0.000  0.807  1.0
  Ge  Ge9  1  0.193  0.000  0.193  1.0
  Ge  Ge10  1  0.715  0.715  0.000  1.0
[/CIF]
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The crystal structure described by U3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second U site, U(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form edge-sharing UGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent U(1), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one U(2), two equivalent U(1), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent U(2), four equivalent U(1), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_U3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.994
_cell_length_b   7.994
_cell_length_c   7.994
_cell_angle_alpha   148.282
_cell_angle_beta   131.887
_cell_angle_gamma   58.781
_symmetry_Int_Tables_number   1
_cell_volume   198.314
_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  0.871  0.371  0.500  1.0
  U  U1  1  0.129  0.629  0.500  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  Cu  Cu3  1  0.858  0.169  0.689  1.0
  Cu  Cu4  1  0.142  0.831  0.311  1.0
  Cu  Cu5  1  0.480  0.169  0.311  1.0
  Cu  Cu6  1  0.520  0.831  0.689  1.0
  Ge  Ge7  1  0.285  0.285  0.000  1.0
  Ge  Ge8  1  0.807  0.000  0.807  1.0
  Ge  Ge9  1  0.193  0.000  0.193  1.0
  Ge  Ge10  1  0.715  0.715  0.000  1.0
[/CIF]
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