data_Ti4CrAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   5.23
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ti4CrAg
_chemical_formula_sum   'Ti4 Cr1 Ag1'
_cell_volume   101.22
_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
  Ti  Ti2  1  0.76  0.64  0.76  1.0
  Ti  Ti3  1  0.64  0.76  0.76  1.0
  Ti  Ti4  1  0.64  0.64  0.64  1.0
  Ti  Ti5  1  0.76  0.76  0.64  1.0
  Cr  Cr1  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.85  0.85  0.85  1.0

data_Ti4CrAg
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   12.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Ti4CrAg
_chemical_formula_sum   'Ti12 Cr3 Ag3'
_cell_volume   303.67
_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
  Ti  Ti0  9  0.08  0.04  0.28  1.0
  Ti  Ti1  3  0.0  0.0  0.36  1.0
  Cr  Cr2  3  0.0  0.0  0.0  1.0
  Ag  Ag3  3  0.0  0.0  0.15  1.0

Ti Ti Ti Ti Cr Ag
Ti4CrAg crystallizes in the trigonal R3m space group. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one Ti(2), two equivalent Ti(1), one Cr(1), and one Ag(1) atom. The Ti(1)-Ti(2) bond length is 1.08 Å. Both Ti(1)-Ti(1) bond lengths are 0.62 Å. The Ti(1)-Cr(1) bond length is 2.74 Å. The Ti(1)-Ag(1) bond length is 1.71 Å. In the second Ti site, Ti(2) is bonded in a 3-coordinate geometry to three equivalent Ti(1) atoms. Cr(1) is bonded in a distorted single-bond geometry to three equivalent Ti(1) and one Ag(1) atom. The Cr(1)-Ag(1) bond length is 1.93 Å. Ag(1) is bonded in a 4-coordinate geometry to three equivalent Ti(1) and one Cr(1) atom.