The structure described by U2Co3Ge is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Cmcm space group. U(1) is bonded in a 13-coordinate geometry to one U(1), three equivalent Co(1), six equivalent Co(2), and three equivalent Ge(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent U(1), four equivalent Co(2), and two equivalent Ge(1) atoms to form distorted CoU6Co4Ge2 cuboctahedra that share corners with four equivalent Ge(1)U6Co6 cuboctahedra, corners with six equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with eight equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Co(1)U6Co4Ge2 cuboctahedra, faces with six equivalent Ge(1)U6Co6 cuboctahedra, and faces with twelve equivalent Co(2)U6Co4Ge2 cuboctahedra. In the second Co site, Co(2) is bonded to six equivalent U(1), two equivalent Co(1), two equivalent Co(2), and two equivalent Ge(1) atoms to form distorted CoU6Co4Ge2 cuboctahedra that share corners with four equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with four equivalent Ge(1)U6Co6 cuboctahedra, corners with ten equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Co(2)U6Co4Ge2 cuboctahedra, faces with six equivalent Co(1)U6Co4Ge2 cuboctahedra, faces with six equivalent Co(2)U6Co4Ge2 cuboctahedra, and faces with six equivalent Ge(1)U6Co6 cuboctahedra. Ge(1) is bonded to six equivalent U(1), two equivalent Co(1), and four equivalent Co(2) atoms to form GeU6Co6 cuboctahedra that share corners with four equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with eight equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Ge(1)U6Co6 cuboctahedra, faces with two equivalent Ge(1)U6Co6 cuboctahedra, faces with six equivalent Co(1)U6Co4Ge2 cuboctahedra, and faces with twelve equivalent Co(2)U6Co4Ge2 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2Co3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.180
_cell_length_b   5.185
_cell_length_c   7.593
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.971
_symmetry_Int_Tables_number   1
_cell_volume   176.684
_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  0.666  0.332  0.572  1.0
  U  U1  1  0.334  0.668  0.428  1.0
  U  U2  1  0.334  0.668  0.072  1.0
  U  U3  1  0.666  0.332  0.928  1.0
  Co  Co4  1  0.171  0.341  0.750  1.0
  Co  Co5  1  0.659  0.830  0.750  1.0
  Co  Co6  1  0.171  0.830  0.750  1.0
  Co  Co7  1  0.829  0.659  0.250  1.0
  Co  Co8  1  0.341  0.170  0.250  1.0
  Co  Co9  1  0.829  0.170  0.250  1.0
  Ge  Ge10  1  0.000  0.000  0.000  1.0
  Ge  Ge11  1  0.000  0.000  0.500  1.0
[/CIF]
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The structure described by U2Co3Ge is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Cmcm space group. U(1) is bonded in a 13-coordinate geometry to one U(1), three equivalent Co(1), six equivalent Co(2), and three equivalent Ge(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent U(1), four equivalent Co(2), and two equivalent Ge(1) atoms to form distorted CoU6Co4Ge2 cuboctahedra that share corners with four equivalent Ge(1)U6Co6 cuboctahedra, corners with six equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with eight equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Co(1)U6Co4Ge2 cuboctahedra, faces with six equivalent Ge(1)U6Co6 cuboctahedra, and faces with twelve equivalent Co(2)U6Co4Ge2 cuboctahedra. In the second Co site, Co(2) is bonded to six equivalent U(1), two equivalent Co(1), two equivalent Co(2), and two equivalent Ge(1) atoms to form distorted CoU6Co4Ge2 cuboctahedra that share corners with four equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with four equivalent Ge(1)U6Co6 cuboctahedra, corners with ten equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Co(2)U6Co4Ge2 cuboctahedra, faces with six equivalent Co(1)U6Co4Ge2 cuboctahedra, faces with six equivalent Co(2)U6Co4Ge2 cuboctahedra, and faces with six equivalent Ge(1)U6Co6 cuboctahedra. Ge(1) is bonded to six equivalent U(1), two equivalent Co(1), and four equivalent Co(2) atoms to form GeU6Co6 cuboctahedra that share corners with four equivalent Co(1)U6Co4Ge2 cuboctahedra, corners with eight equivalent Co(2)U6Co4Ge2 cuboctahedra, edges with six equivalent Ge(1)U6Co6 cuboctahedra, faces with two equivalent Ge(1)U6Co6 cuboctahedra, faces with six equivalent Co(1)U6Co4Ge2 cuboctahedra, and faces with twelve equivalent Co(2)U6Co4Ge2 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2Co3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.180
_cell_length_b   5.185
_cell_length_c   7.593
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.971
_symmetry_Int_Tables_number   1
_cell_volume   176.684
_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  0.666  0.332  0.572  1.0
  U  U1  1  0.334  0.668  0.428  1.0
  U  U2  1  0.334  0.668  0.072  1.0
  U  U3  1  0.666  0.332  0.928  1.0
  Co  Co4  1  0.171  0.341  0.750  1.0
  Co  Co5  1  0.659  0.830  0.750  1.0
  Co  Co6  1  0.171  0.830  0.750  1.0
  Co  Co7  1  0.829  0.659  0.250  1.0
  Co  Co8  1  0.341  0.170  0.250  1.0
  Co  Co9  1  0.829  0.170  0.250  1.0
  Ge  Ge10  1  0.000  0.000  0.000  1.0
  Ge  Ge11  1  0.000  0.000  0.500  1.0
[/CIF]
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