data_GdCr2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.56
_cell_length_b   4.56
_cell_length_c   4.56
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GdCr2Ni
_chemical_formula_sum   'Gd1 Cr2 Ni1'
_cell_volume   67.03
_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
  Gd  Gd2  1  0.22  0.22  0.22  1.0
  Cr  Cr0  1  0.84  0.84  0.84  1.0
  Cr  Cr1  1  0.61  0.61  0.61  1.0
  Ni  Ni3  1  0.0  0.0  0.0  1.0

data_GdCr2Ni
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.56
_cell_length_b   4.56
_cell_length_c   11.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   GdCr2Ni
_chemical_formula_sum   'Gd3 Cr6 Ni3'
_cell_volume   201.08
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Gd  Gd0  3  0.0  0.0  0.78  1.0
  Cr  Cr1  3  0.0  0.0  0.16  1.0
  Cr  Cr2  3  0.0  0.0  0.39  1.0
  Ni  Ni3  3  0.0  0.0  0.0  1.0

Gd Cr Cr Ni
GdCr2Ni crystallizes in the trigonal R3m space group. Gd(1) is bonded in a 10-coordinate geometry to three equivalent Cr(1), three equivalent Cr(2), and four equivalent Ni(1) atoms. All Gd(1)-Cr(1) bond lengths are 2.70 Å. All Gd(1)-Cr(2) bond lengths are 2.70 Å. There is one shorter (2.50 Å) and three longer (2.90 Å) Gd(1)-Ni(1) bond lengths. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted single-bond geometry to three equivalent Gd(1), one Cr(2), and one Ni(1) atom. The Cr(1)-Cr(2) bond length is 2.50 Å. The Cr(1)-Ni(1) bond length is 1.83 Å. In the second Cr site, Cr(2) is bonded in a 7-coordinate geometry to three equivalent Gd(1), one Cr(1), and three equivalent Ni(1) atoms. All Cr(2)-Ni(1) bond lengths are 2.70 Å. Ni(1) is bonded in a 2-coordinate geometry to four equivalent Gd(1), one Cr(1), and three equivalent Cr(2) atoms.