The crystal structure described by Hf2Ge crystallizes in the tetragonal I4/mcm space group. Hf(1) is bonded in a 2-coordinate geometry to two equivalent Ge(1) atoms. Ge(1) is bonded to four equivalent Hf(1) and two equivalent Ge(1) atoms to form distorted corner-sharing GeHf4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 0-44°. is represented by the CIF card [CIF]
data_Hf2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.602
_cell_length_b   5.602
_cell_length_c   5.602
_cell_angle_alpha   102.170
_cell_angle_beta   102.170
_cell_angle_gamma   125.337
_symmetry_Int_Tables_number   1
_cell_volume   127.380
_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
  Hf  Hf0  1  0.649  0.149  0.799  1.0
  Hf  Hf1  1  0.351  0.851  0.201  1.0
  Hf  Hf2  1  0.851  0.649  0.500  1.0
  Hf  Hf3  1  0.149  0.351  0.500  1.0
  Ge  Ge4  1  0.500  0.500  0.000  1.0
  Ge  Ge5  1  0.000  0.000  0.000  1.0
[/CIF]
.
The crystal structure described by Hf2Ge crystallizes in the tetragonal I4/mcm space group. Hf(1) is bonded in a 2-coordinate geometry to two equivalent Ge(1) atoms. Ge(1) is bonded to four equivalent Hf(1) and two equivalent Ge(1) atoms to form distorted corner-sharing GeHf4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 0-44°. is represented by the CIF card [CIF]
data_Hf2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.602
_cell_length_b   5.602
_cell_length_c   5.602
_cell_angle_alpha   102.170
_cell_angle_beta   102.170
_cell_angle_gamma   125.337
_symmetry_Int_Tables_number   1
_cell_volume   127.380
_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
  Hf  Hf0  1  0.649  0.149  0.799  1.0
  Hf  Hf1  1  0.351  0.851  0.201  1.0
  Hf  Hf2  1  0.851  0.649  0.500  1.0
  Hf  Hf3  1  0.149  0.351  0.500  1.0
  Ge  Ge4  1  0.500  0.500  0.000  1.0
  Ge  Ge5  1  0.000  0.000  0.000  1.0
[/CIF]
.