The structure described by Hf5NiSb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1) and six equivalent Sb(1) atoms. In the second Hf site, Hf(2) is bonded to two equivalent Ni(1) and five equivalent Sb(1) atoms to form a mixture of distorted face, corner, and edge-sharing HfNi2Sb5 pentagonal bipyramids. Ni(1) is bonded to six equivalent Hf(2) atoms to form face-sharing NiHf6 octahedra. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1) and five equivalent Hf(2) atoms. is represented by the CIF card [CIF]
data_Hf5NiSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.518
_cell_length_b   8.518
_cell_length_c   5.692
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   357.663
_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  0.667  0.333  0.500  1.0
  Hf  Hf1  1  0.333  0.667  0.500  1.0
  Hf  Hf2  1  0.333  0.667  0.000  1.0
  Hf  Hf3  1  0.667  0.333  0.000  1.0
  Hf  Hf4  1  0.745  0.745  0.250  1.0
  Hf  Hf5  1  0.255  0.000  0.250  1.0
  Hf  Hf6  1  0.000  0.255  0.250  1.0
  Hf  Hf7  1  0.255  0.255  0.750  1.0
  Hf  Hf8  1  0.745  0.000  0.750  1.0
  Hf  Hf9  1  0.000  0.745  0.750  1.0
  Ni  Ni10  1  0.000  0.000  0.000  1.0
  Ni  Ni11  1  0.000  0.000  0.500  1.0
  Sb  Sb12  1  0.389  0.389  0.250  1.0
  Sb  Sb13  1  0.611  0.000  0.250  1.0
  Sb  Sb14  1  0.000  0.611  0.250  1.0
  Sb  Sb15  1  0.611  0.611  0.750  1.0
  Sb  Sb16  1  0.389  0.000  0.750  1.0
  Sb  Sb17  1  0.000  0.389  0.750  1.0
[/CIF]
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The structure described by Hf5NiSb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1) and six equivalent Sb(1) atoms. In the second Hf site, Hf(2) is bonded to two equivalent Ni(1) and five equivalent Sb(1) atoms to form a mixture of distorted face, corner, and edge-sharing HfNi2Sb5 pentagonal bipyramids. Ni(1) is bonded to six equivalent Hf(2) atoms to form face-sharing NiHf6 octahedra. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1) and five equivalent Hf(2) atoms. is represented by the CIF card [CIF]
data_Hf5NiSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.518
_cell_length_b   8.518
_cell_length_c   5.692
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   357.663
_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  0.667  0.333  0.500  1.0
  Hf  Hf1  1  0.333  0.667  0.500  1.0
  Hf  Hf2  1  0.333  0.667  0.000  1.0
  Hf  Hf3  1  0.667  0.333  0.000  1.0
  Hf  Hf4  1  0.745  0.745  0.250  1.0
  Hf  Hf5  1  0.255  0.000  0.250  1.0
  Hf  Hf6  1  0.000  0.255  0.250  1.0
  Hf  Hf7  1  0.255  0.255  0.750  1.0
  Hf  Hf8  1  0.745  0.000  0.750  1.0
  Hf  Hf9  1  0.000  0.745  0.750  1.0
  Ni  Ni10  1  0.000  0.000  0.000  1.0
  Ni  Ni11  1  0.000  0.000  0.500  1.0
  Sb  Sb12  1  0.389  0.389  0.250  1.0
  Sb  Sb13  1  0.611  0.000  0.250  1.0
  Sb  Sb14  1  0.000  0.611  0.250  1.0
  Sb  Sb15  1  0.611  0.611  0.750  1.0
  Sb  Sb16  1  0.389  0.000  0.750  1.0
  Sb  Sb17  1  0.000  0.389  0.750  1.0
[/CIF]
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