The structure described by Hf crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 11-coordinate geometry to five equivalent Hf(1) and six equivalent Hf(2) atoms. In the second Hf site, Hf(2) is bonded in a 14-coordinate geometry to two equivalent Hf(2) and twelve equivalent Hf(1) atoms. is represented by the CIF card [CIF]
data_Hf
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.962
_cell_length_b   4.962
_cell_length_c   3.086
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.999
_symmetry_Int_Tables_number   1
_cell_volume   65.816
_cell_formula_units_Z   3
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  0.667  0.333  0.500  1.0
  Hf  Hf1  1  0.333  0.667  0.500  1.0
  Hf  Hf2  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by Hf crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 11-coordinate geometry to five equivalent Hf(1) and six equivalent Hf(2) atoms. In the second Hf site, Hf(2) is bonded in a 14-coordinate geometry to two equivalent Hf(2) and twelve equivalent Hf(1) atoms. is represented by the CIF card [CIF]
data_Hf
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.962
_cell_length_b   4.962
_cell_length_c   3.086
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.999
_symmetry_Int_Tables_number   1
_cell_volume   65.816
_cell_formula_units_Z   3
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  0.667  0.333  0.500  1.0
  Hf  Hf1  1  0.333  0.667  0.500  1.0
  Hf  Hf2  1  0.000  0.000  0.000  1.0
[/CIF]
.