The structure described by Ni2Cr crystallizes in the orthorhombic Immm space group. Cr(1) is bonded to two equivalent Cr(1) and ten equivalent Ni(1) atoms to form CrCr2Ni10 cuboctahedra that share corners with two equivalent Cr(1)Cr2Ni10 cuboctahedra, corners with ten equivalent Ni(1)Cr5Ni7 cuboctahedra, edges with twelve equivalent Cr(1)Cr2Ni10 cuboctahedra, edges with twelve equivalent Ni(1)Cr5Ni7 cuboctahedra, faces with four equivalent Cr(1)Cr2Ni10 cuboctahedra, and faces with fourteen equivalent Ni(1)Cr5Ni7 cuboctahedra. Ni(1) is bonded to five equivalent Cr(1) and seven equivalent Ni(1) atoms to form NiCr5Ni7 cuboctahedra that share corners with five equivalent Cr(1)Cr2Ni10 cuboctahedra, corners with seven equivalent Ni(1)Cr5Ni7 cuboctahedra, edges with six equivalent Cr(1)Cr2Ni10 cuboctahedra, edges with eighteen equivalent Ni(1)Cr5Ni7 cuboctahedra, faces with seven equivalent Cr(1)Cr2Ni10 cuboctahedra, and faces with eleven equivalent Ni(1)Cr5Ni7 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.258
_cell_length_b   4.258
_cell_length_c   4.258
_cell_angle_alpha   146.582
_cell_angle_beta   130.990
_cell_angle_gamma   60.620
_symmetry_Int_Tables_number   1
_cell_volume   31.797
_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
  Cr  Cr0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.667  0.667  0.000  1.0
  Ni  Ni2  1  0.333  0.333  0.000  1.0
[/CIF]
.
The structure described by Ni2Cr crystallizes in the orthorhombic Immm space group. Cr(1) is bonded to two equivalent Cr(1) and ten equivalent Ni(1) atoms to form CrCr2Ni10 cuboctahedra that share corners with two equivalent Cr(1)Cr2Ni10 cuboctahedra, corners with ten equivalent Ni(1)Cr5Ni7 cuboctahedra, edges with twelve equivalent Cr(1)Cr2Ni10 cuboctahedra, edges with twelve equivalent Ni(1)Cr5Ni7 cuboctahedra, faces with four equivalent Cr(1)Cr2Ni10 cuboctahedra, and faces with fourteen equivalent Ni(1)Cr5Ni7 cuboctahedra. Ni(1) is bonded to five equivalent Cr(1) and seven equivalent Ni(1) atoms to form NiCr5Ni7 cuboctahedra that share corners with five equivalent Cr(1)Cr2Ni10 cuboctahedra, corners with seven equivalent Ni(1)Cr5Ni7 cuboctahedra, edges with six equivalent Cr(1)Cr2Ni10 cuboctahedra, edges with eighteen equivalent Ni(1)Cr5Ni7 cuboctahedra, faces with seven equivalent Cr(1)Cr2Ni10 cuboctahedra, and faces with eleven equivalent Ni(1)Cr5Ni7 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.258
_cell_length_b   4.258
_cell_length_c   4.258
_cell_angle_alpha   146.582
_cell_angle_beta   130.990
_cell_angle_gamma   60.620
_symmetry_Int_Tables_number   1
_cell_volume   31.797
_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
  Cr  Cr0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.667  0.667  0.000  1.0
  Ni  Ni2  1  0.333  0.333  0.000  1.0
[/CIF]
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