The structure described by Cu2NiZn is beta-derived structured and crystallizes in the trigonal R3m space group. Ni(1) is bonded to six equivalent Ni(1), three equivalent Cu(2), and three equivalent Zn(1) atoms to form distorted NiZn3Cu3Ni6 cuboctahedra that share corners with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, corners with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Cu(2), six equivalent Cu(1), and three equivalent Zn(1) atoms to form CuZn3Cu9 cuboctahedra that share corners with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, corners with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. In the second Cu site, Cu(2) is bonded to three equivalent Ni(1), three equivalent Cu(1), and six equivalent Cu(2) atoms to form CuCu9Ni3 cuboctahedra that share corners with six equivalent Cu(2)Cu9Ni3 cuboctahedra, corners with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, and faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra. Zn(1) is bonded to three equivalent Ni(1), three equivalent Cu(1), and six equivalent Zn(1) atoms to form distorted ZnZn6Cu3Ni3 cuboctahedra that share corners with six equivalent Cu(2)Cu9Ni3 cuboctahedra, corners with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. is represented by the CIF card [CIF]
data_ZnCu2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.375
_cell_length_b   8.375
_cell_length_c   8.375
_cell_angle_alpha   17.821
_cell_angle_beta   17.821
_cell_angle_gamma   17.821
_symmetry_Int_Tables_number   1
_cell_volume   48.033
_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
  Zn  Zn0  1  0.748  0.748  0.748  1.0
  Cu  Cu1  1  0.501  0.501  0.501  1.0
  Cu  Cu2  1  0.251  0.251  0.251  1.0
  Ni  Ni3  1  1.000  1.000  1.000  1.0
[/CIF]
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The structure described by Cu2NiZn is beta-derived structured and crystallizes in the trigonal R3m space group. Ni(1) is bonded to six equivalent Ni(1), three equivalent Cu(2), and three equivalent Zn(1) atoms to form distorted NiZn3Cu3Ni6 cuboctahedra that share corners with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, corners with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Cu(2), six equivalent Cu(1), and three equivalent Zn(1) atoms to form CuZn3Cu9 cuboctahedra that share corners with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, corners with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. In the second Cu site, Cu(2) is bonded to three equivalent Ni(1), three equivalent Cu(1), and six equivalent Cu(2) atoms to form CuCu9Ni3 cuboctahedra that share corners with six equivalent Cu(2)Cu9Ni3 cuboctahedra, corners with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(2)Cu9Ni3 cuboctahedra, and faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra. Zn(1) is bonded to three equivalent Ni(1), three equivalent Cu(1), and six equivalent Zn(1) atoms to form distorted ZnZn6Cu3Ni3 cuboctahedra that share corners with six equivalent Cu(2)Cu9Ni3 cuboctahedra, corners with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, edges with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, edges with six equivalent Cu(2)Cu9Ni3 cuboctahedra, edges with six equivalent Cu(1)Zn3Cu9 cuboctahedra, edges with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra, faces with six equivalent Ni(1)Zn3Cu3Ni6 cuboctahedra, faces with six equivalent Cu(1)Zn3Cu9 cuboctahedra, and faces with six equivalent Zn(1)Zn6Cu3Ni3 cuboctahedra. is represented by the CIF card [CIF]
data_ZnCu2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.375
_cell_length_b   8.375
_cell_length_c   8.375
_cell_angle_alpha   17.821
_cell_angle_beta   17.821
_cell_angle_gamma   17.821
_symmetry_Int_Tables_number   1
_cell_volume   48.033
_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
  Zn  Zn0  1  0.748  0.748  0.748  1.0
  Cu  Cu1  1  0.501  0.501  0.501  1.0
  Cu  Cu2  1  0.251  0.251  0.251  1.0
  Ni  Ni3  1  1.000  1.000  1.000  1.0
[/CIF]
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