data_CrCu2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.64
_cell_length_b   4.64
_cell_length_c   4.69
_cell_angle_alpha   101.27
_cell_angle_beta   101.27
_cell_angle_gamma   35.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrCu2Ag
_chemical_formula_sum   'Cr1 Cu2 Ag1'
_cell_volume   57.72
_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  Cr1  1  0.0  0.0  0.0  1.0
  Cu  Cu2  1  0.5  0.0  0.5  1.0
  Cu  Cu3  1  0.38  0.0  0.09  1.0
  Ag  Ag0  1  0.94  0.0  0.3  1.0

data_CrCu2Ag
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.84
_cell_length_b   4.64
_cell_length_c   4.69
_cell_angle_alpha   101.27
_cell_angle_beta   90.0
_cell_angle_gamma   107.82
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrCu2Ag
_chemical_formula_sum   'Cr1 Cu2 Ag1'
_cell_volume   57.72
_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  0.0  0.0  0.0  1.0
  Cu  Cu1  1  0.0  0.5  0.5  1.0
  Cu  Cu2  1  0.0  0.62  0.91  1.0
  Ag  Ag3  1  0.0  0.06  0.7  1.0

Cr Cu Cu Ag
CrAgCu2 crystallizes in the triclinic P1 space group. Cr(1) is bonded in a distorted water-like geometry to one Ag(1), one Cu(1), and one Cu(2) atom. The Cr(1)-Ag(1) bond length is 1.47 Å. The Cr(1)-Cu(1) bond length is 2.95 Å. The Cr(1)-Cu(2) bond length is 1.72 Å. Ag(1) is bonded in a single-bond geometry to one Cr(1) and two equivalent Cu(1) atoms. There is one shorter (2.41 Å) and one longer (2.60 Å) Ag(1)-Cu(1) bond length. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 7-coordinate geometry to one Cr(1), two equivalent Ag(1), two equivalent Cu(1), and two equivalent Cu(2) atoms. Both Cu(1)-Cu(1) bond lengths are 2.84 Å. There is one shorter (1.90 Å) and one longer (2.94 Å) Cu(1)-Cu(2) bond length. In the second Cu site, Cu(2) is bonded in a 1-coordinate geometry to one Cr(1) and two equivalent Cu(1) atoms.