data_UAg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   4.76
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   UAg3
_chemical_formula_sum   'U1 Ag3'
_cell_volume   76.15
_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
  U  U3  1  0.36  0.36  0.36  1.0
  Ag  Ag0  1  0.05  0.05  0.05  1.0
  Ag  Ag1  1  0.68  0.68  0.68  1.0
  Ag  Ag2  1  0.0  0.0  0.0  1.0

data_UAg3
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   11.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   UAg3
_chemical_formula_sum   'U3 Ag9'
_cell_volume   228.45
_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
  U  U0  3  0.0  0.0  0.64  1.0
  Ag  Ag1  3  0.0  0.0  0.0  1.0
  Ag  Ag2  3  0.0  0.0  0.32  1.0
  Ag  Ag3  3  0.0  0.0  0.95  1.0

U Ag Ag Ag
UAg3 crystallizes in the trigonal R3m space group. U(1) is bonded in a 11-coordinate geometry to three equivalent Ag(3), four equivalent Ag(1), and four equivalent Ag(2) atoms. All U(1)-Ag(3) bond lengths are 2.77 Å. There are three shorter (2.75 Å) and one longer (3.70 Å) U(1)-Ag(1) bond length. There are three shorter (2.75 Å) and one longer (3.70 Å) U(1)-Ag(2) bond length. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a single-bond geometry to four equivalent U(1) and one Ag(3) atom. The Ag(1)-Ag(3) bond length is 0.54 Å. In the second Ag site, Ag(2) is bonded in a 3-coordinate geometry to four equivalent U(1) atoms. In the third Ag site, Ag(3) is bonded in a single-bond geometry to three equivalent U(1) and one Ag(1) atom.