data_ZnCr4Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.83
_cell_length_b   4.83
_cell_length_c   4.83
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnCr4Ag
_chemical_formula_sum   'Zn1 Cr4 Ag1'
_cell_volume   79.43
_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  Zn5  1  0.0  0.0  0.0  1.0
  Cr  Cr1  1  0.55  0.55  0.27  1.0
  Cr  Cr2  1  0.55  0.27  0.55  1.0
  Cr  Cr3  1  0.27  0.55  0.55  1.0
  Cr  Cr4  1  0.27  0.27  0.27  1.0
  Ag  Ag0  1  0.71  0.71  0.71  1.0

data_ZnCr4Ag
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.83
_cell_length_b   4.83
_cell_length_c   11.82
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   ZnCr4Ag
_chemical_formula_sum   'Zn3 Cr12 Ag3'
_cell_volume   238.3
_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
  Zn  Zn0  3  0.0  0.0  0.0  1.0
  Cr  Cr1  9  0.19  0.1  0.54  1.0
  Cr  Cr2  3  0.0  0.0  0.73  1.0
  Ag  Ag3  3  0.0  0.0  0.29  1.0

Zn Cr Cr Cr Cr Ag
Cr4AgZn crystallizes in the trigonal R3m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 3-coordinate geometry to two equivalent Cr(1), three equivalent Cr(2), one Ag(1), and three equivalent Zn(1) atoms. Both Cr(1)-Cr(1) bond lengths are 1.38 Å. There is one shorter (2.39 Å) and two longer (3.00 Å) Cr(1)-Cr(2) bond lengths. The Cr(1)-Ag(1) bond length is 2.24 Å. There are two shorter (2.90 Å) and one longer (3.15 Å) Cr(1)-Zn(1) bond length. In the second Cr site, Cr(2) is bonded in a 16-coordinate geometry to nine equivalent Cr(1), three equivalent Ag(1), and four equivalent Zn(1) atoms. All Cr(2)-Ag(1) bond lengths are 3.04 Å. There are three shorter (2.89 Å) and one longer (3.18 Å) Cr(2)-Zn(1) bond length. Ag(1) is bonded in a 3-coordinate geometry to three equivalent Cr(1), three equivalent Cr(2), and three equivalent Zn(1) atoms. All Ag(1)-Zn(1) bond lengths are 2.82 Å. Zn(1) is bonded in a 16-coordinate geometry to four equivalent Cr(2), nine equivalent Cr(1), and three equivalent Ag(1) atoms.