The crystal structure described by Tc3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded to eight equivalent Tc(1) and four equivalent Ge(1) atoms to form TcTc8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Tc12 cuboctahedra, corners with fourteen equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with six equivalent Ge(1)Tc12 cuboctahedra, edges with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tc12 cuboctahedra, and faces with sixteen equivalent Tc(1)Tc8Ge4 cuboctahedra. Ge(1) is bonded to twelve equivalent Tc(1) atoms to form GeTc12 cuboctahedra that share corners with six equivalent Ge(1)Tc12 cuboctahedra, corners with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with eighteen equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with eight equivalent Ge(1)Tc12 cuboctahedra, and faces with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tc3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.474
_cell_length_b   5.474
_cell_length_c   4.479
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   116.224
_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
  Tc  Tc0  1  0.170  0.339  0.250  1.0
  Tc  Tc1  1  0.661  0.830  0.250  1.0
  Tc  Tc2  1  0.170  0.830  0.250  1.0
  Tc  Tc3  1  0.830  0.661  0.750  1.0
  Tc  Tc4  1  0.339  0.170  0.750  1.0
  Tc  Tc5  1  0.830  0.170  0.750  1.0
  Ge  Ge6  1  0.333  0.667  0.750  1.0
  Ge  Ge7  1  0.667  0.333  0.250  1.0
[/CIF]
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The crystal structure described by Tc3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded to eight equivalent Tc(1) and four equivalent Ge(1) atoms to form TcTc8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Tc12 cuboctahedra, corners with fourteen equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with six equivalent Ge(1)Tc12 cuboctahedra, edges with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tc12 cuboctahedra, and faces with sixteen equivalent Tc(1)Tc8Ge4 cuboctahedra. Ge(1) is bonded to twelve equivalent Tc(1) atoms to form GeTc12 cuboctahedra that share corners with six equivalent Ge(1)Tc12 cuboctahedra, corners with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with eighteen equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with eight equivalent Ge(1)Tc12 cuboctahedra, and faces with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tc3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.474
_cell_length_b   5.474
_cell_length_c   4.479
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   116.224
_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
  Tc  Tc0  1  0.170  0.339  0.250  1.0
  Tc  Tc1  1  0.661  0.830  0.250  1.0
  Tc  Tc2  1  0.170  0.830  0.250  1.0
  Tc  Tc3  1  0.830  0.661  0.750  1.0
  Tc  Tc4  1  0.339  0.170  0.750  1.0
  Tc  Tc5  1  0.830  0.170  0.750  1.0
  Ge  Ge6  1  0.333  0.667  0.750  1.0
  Ge  Ge7  1  0.667  0.333  0.250  1.0
[/CIF]
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