The crystal structure described by Tm3Ge is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to four equivalent Tm(1), four equivalent Tm(2), and four equivalent Ge(1) atoms to form distorted TmTm8Ge4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Ge4 cuboctahedra, edges with eight equivalent Tm(1)Tm8Ge4 cuboctahedra, edges with eight equivalent Ge(1)Tm12 cuboctahedra, faces with four equivalent Ge(1)Tm12 cuboctahedra, and faces with ten equivalent Tm(1)Tm8Ge4 cuboctahedra. In the second Tm site, Tm(2) is bonded in a square co-planar geometry to eight equivalent Tm(1) and four equivalent Ge(1) atoms. Ge(1) is bonded to four equivalent Tm(2) and eight equivalent Tm(1) atoms to form GeTm12 cuboctahedra that share corners with four equivalent Ge(1)Tm12 cuboctahedra, edges with eight equivalent Ge(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tm12 cuboctahedra, and faces with eight equivalent Tm(1)Tm8Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.978
_cell_length_b   5.978
_cell_length_c   5.978
_cell_angle_alpha   136.374
_cell_angle_beta   136.374
_cell_angle_gamma   63.403
_symmetry_Int_Tables_number   1
_cell_volume   100.386
_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
  Tm  Tm0  1  0.750  0.250  0.500  1.0
  Tm  Tm1  1  0.250  0.750  0.500  1.0
  Tm  Tm2  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 crystal structure described by Tm3Ge is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to four equivalent Tm(1), four equivalent Tm(2), and four equivalent Ge(1) atoms to form distorted TmTm8Ge4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Ge4 cuboctahedra, edges with eight equivalent Tm(1)Tm8Ge4 cuboctahedra, edges with eight equivalent Ge(1)Tm12 cuboctahedra, faces with four equivalent Ge(1)Tm12 cuboctahedra, and faces with ten equivalent Tm(1)Tm8Ge4 cuboctahedra. In the second Tm site, Tm(2) is bonded in a square co-planar geometry to eight equivalent Tm(1) and four equivalent Ge(1) atoms. Ge(1) is bonded to four equivalent Tm(2) and eight equivalent Tm(1) atoms to form GeTm12 cuboctahedra that share corners with four equivalent Ge(1)Tm12 cuboctahedra, edges with eight equivalent Ge(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tm12 cuboctahedra, and faces with eight equivalent Tm(1)Tm8Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.978
_cell_length_b   5.978
_cell_length_c   5.978
_cell_angle_alpha   136.374
_cell_angle_beta   136.374
_cell_angle_gamma   63.403
_symmetry_Int_Tables_number   1
_cell_volume   100.386
_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
  Tm  Tm0  1  0.750  0.250  0.500  1.0
  Tm  Tm1  1  0.250  0.750  0.500  1.0
  Tm  Tm2  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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