The compound described by U3Ge is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to four equivalent U(1), four equivalent U(2), and four equivalent Ge(1) atoms to form distorted UU8Ge4 cuboctahedra that share corners with twelve equivalent U(1)U8Ge4 cuboctahedra, edges with eight equivalent U(1)U8Ge4 cuboctahedra, edges with eight equivalent U(2)U8Ge4 cuboctahedra, edges with eight equivalent Ge(1)U12 cuboctahedra, faces with four equivalent U(2)U8Ge4 cuboctahedra, faces with four equivalent Ge(1)U12 cuboctahedra, and faces with ten equivalent U(1)U8Ge4 cuboctahedra. In the second U site, U(2) is bonded to eight equivalent U(1) and four equivalent Ge(1) atoms to form distorted UU8Ge4 cuboctahedra that share corners with four equivalent U(2)U8Ge4 cuboctahedra, corners with eight equivalent Ge(1)U12 cuboctahedra, edges with eight equivalent U(2)U8Ge4 cuboctahedra, edges with sixteen equivalent U(1)U8Ge4 cuboctahedra, faces with four equivalent U(2)U8Ge4 cuboctahedra, faces with six equivalent Ge(1)U12 cuboctahedra, and faces with eight equivalent U(1)U8Ge4 cuboctahedra. Ge(1) is bonded to four equivalent U(2) and eight equivalent U(1) atoms to form GeU12 cuboctahedra that share corners with four equivalent Ge(1)U12 cuboctahedra, corners with eight equivalent U(2)U8Ge4 cuboctahedra, edges with eight equivalent Ge(1)U12 cuboctahedra, edges with sixteen equivalent U(1)U8Ge4 cuboctahedra, faces with four equivalent Ge(1)U12 cuboctahedra, faces with six equivalent U(2)U8Ge4 cuboctahedra, and faces with eight equivalent U(1)U8Ge4 cuboctahedra. is represented by the CIF card [CIF]
data_U3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.176
_cell_length_b   5.176
_cell_length_c   5.176
_cell_angle_alpha   130.811
_cell_angle_beta   130.811
_cell_angle_gamma   72.113
_symmetry_Int_Tables_number   1
_cell_volume   77.684
_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  0.750  0.250  0.500  1.0
  U  U1  1  0.250  0.750  0.500  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  Ge  Ge3  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by U3Ge is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to four equivalent U(1), four equivalent U(2), and four equivalent Ge(1) atoms to form distorted UU8Ge4 cuboctahedra that share corners with twelve equivalent U(1)U8Ge4 cuboctahedra, edges with eight equivalent U(1)U8Ge4 cuboctahedra, edges with eight equivalent U(2)U8Ge4 cuboctahedra, edges with eight equivalent Ge(1)U12 cuboctahedra, faces with four equivalent U(2)U8Ge4 cuboctahedra, faces with four equivalent Ge(1)U12 cuboctahedra, and faces with ten equivalent U(1)U8Ge4 cuboctahedra. In the second U site, U(2) is bonded to eight equivalent U(1) and four equivalent Ge(1) atoms to form distorted UU8Ge4 cuboctahedra that share corners with four equivalent U(2)U8Ge4 cuboctahedra, corners with eight equivalent Ge(1)U12 cuboctahedra, edges with eight equivalent U(2)U8Ge4 cuboctahedra, edges with sixteen equivalent U(1)U8Ge4 cuboctahedra, faces with four equivalent U(2)U8Ge4 cuboctahedra, faces with six equivalent Ge(1)U12 cuboctahedra, and faces with eight equivalent U(1)U8Ge4 cuboctahedra. Ge(1) is bonded to four equivalent U(2) and eight equivalent U(1) atoms to form GeU12 cuboctahedra that share corners with four equivalent Ge(1)U12 cuboctahedra, corners with eight equivalent U(2)U8Ge4 cuboctahedra, edges with eight equivalent Ge(1)U12 cuboctahedra, edges with sixteen equivalent U(1)U8Ge4 cuboctahedra, faces with four equivalent Ge(1)U12 cuboctahedra, faces with six equivalent U(2)U8Ge4 cuboctahedra, and faces with eight equivalent U(1)U8Ge4 cuboctahedra. is represented by the CIF card [CIF]
data_U3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.176
_cell_length_b   5.176
_cell_length_c   5.176
_cell_angle_alpha   130.811
_cell_angle_beta   130.811
_cell_angle_gamma   72.113
_symmetry_Int_Tables_number   1
_cell_volume   77.684
_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  0.750  0.250  0.500  1.0
  U  U1  1  0.250  0.750  0.500  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  Ge  Ge3  1  0.000  0.000  0.000  1.0
[/CIF]
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