The structure described by Hf2CoCuSn2 crystallizes in the trigonal P3m1 space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 9-coordinate geometry to three equivalent Cu(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the second Hf site, Hf(2) is bonded in a 9-coordinate geometry to three equivalent Co(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. Co(1) is bonded in a 7-coordinate geometry to three equivalent Hf(2), one Sn(1), and three equivalent Sn(2) atoms. Cu(1) is bonded in a 7-coordinate geometry to three equivalent Hf(1), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to three equivalent Hf(1), three equivalent Hf(2), one Co(1), and three equivalent Cu(1) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to three equivalent Hf(1), three equivalent Hf(2), three equivalent Co(1), and one Cu(1) atom. is represented by the CIF file [CIF]
data_Hf2CoCuSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.357
_cell_length_b   4.357
_cell_length_c   6.766
_cell_angle_alpha   90.005
_cell_angle_beta   89.995
_cell_angle_gamma   120.004
_symmetry_Int_Tables_number   1
_cell_volume   111.206
_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
  Hf  Hf0  1  0.000  1.000  0.496  1.0
  Hf  Hf1  1  1.000  0.000  0.976  1.0
  Co  Co2  1  0.333  0.667  0.837  1.0
  Cu  Cu3  1  0.667  0.333  0.330  1.0
  Sn  Sn4  1  0.333  0.667  0.224  1.0
  Sn  Sn5  1  0.667  0.333  0.734  1.0
[/CIF]
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The structure described by Hf2CoCuSn2 crystallizes in the trigonal P3m1 space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 9-coordinate geometry to three equivalent Cu(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the second Hf site, Hf(2) is bonded in a 9-coordinate geometry to three equivalent Co(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. Co(1) is bonded in a 7-coordinate geometry to three equivalent Hf(2), one Sn(1), and three equivalent Sn(2) atoms. Cu(1) is bonded in a 7-coordinate geometry to three equivalent Hf(1), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to three equivalent Hf(1), three equivalent Hf(2), one Co(1), and three equivalent Cu(1) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to three equivalent Hf(1), three equivalent Hf(2), three equivalent Co(1), and one Cu(1) atom. is represented by the CIF file [CIF]
data_Hf2CoCuSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.357
_cell_length_b   4.357
_cell_length_c   6.766
_cell_angle_alpha   90.005
_cell_angle_beta   89.995
_cell_angle_gamma   120.004
_symmetry_Int_Tables_number   1
_cell_volume   111.206
_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
  Hf  Hf0  1  0.000  1.000  0.496  1.0
  Hf  Hf1  1  1.000  0.000  0.976  1.0
  Co  Co2  1  0.333  0.667  0.837  1.0
  Cu  Cu3  1  0.667  0.333  0.330  1.0
  Sn  Sn4  1  0.333  0.667  0.224  1.0
  Sn  Sn5  1  0.667  0.333  0.734  1.0
[/CIF]
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