data_LiLaTaCr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.71
_cell_length_b   4.71
_cell_length_c   4.71
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiLaTaCr
_chemical_formula_sum   'Li1 La1 Ta1 Cr1'
_cell_volume   74.1
_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
  Li  Li2  1  0.0  0.0  0.0  1.0
  La  La1  1  0.67  0.67  0.67  1.0
  Ta  Ta3  1  0.33  0.33  0.33  1.0
  Cr  Cr0  1  0.0  0.0  0.0  1.0

data_LiLaTaCr
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.71
_cell_length_b   4.71
_cell_length_c   11.55
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LiLaTaCr
_chemical_formula_sum   'Li3 La3 Ta3 Cr3'
_cell_volume   222.29
_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
  Li  Li0  3  0.0  0.0  0.0  1.0
  La  La1  3  0.0  0.0  0.33  1.0
  Ta  Ta2  3  0.0  0.0  0.67  1.0
  Cr  Cr3  3  0.0  0.0  1.0  1.0

Li La Ta Cr 0 3 o o o 0 1 o - - 0 1 - o - 0 1 - - o 0 2 o o - 0 2 o - o 0 2 - o o 1 2 o o + 1 2 o + o 1 2 + o o 1 3 o + + 1 3 + o + 1 3 + + o 2 3 o o + 2 3 o + o 2 3 + o o 
LiLaTaCr crystallizes in the trigonal R3m space group. Li(1) is bonded in a single-bond geometry to four equivalent La(1) and one Cr(1) atom. There are three shorter (2.72 Å) and one longer (3.85 Å) Li(1)-La(1) bond length. The Li(1)-Cr(1) bond length is 0.01 Å. La(1) is bonded in a 11-coordinate geometry to four equivalent Li(1), four equivalent Ta(1), and three equivalent Cr(1) atoms. There are three shorter (2.72 Å) and one longer (3.85 Å) La(1)-Ta(1) bond length. All La(1)-Cr(1) bond lengths are 2.72 Å. Ta(1) is bonded in a 3-coordinate geometry to four equivalent La(1) atoms. Cr(1) is bonded in a single-bond geometry to one Li(1) and three equivalent La(1) atoms.