data_SrAcLa2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.22
_cell_length_b   6.22
_cell_length_c   6.22
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrAcLa2
_chemical_formula_sum   'Sr1 Ac1 La2'
_cell_volume   169.97
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Ac  Ac0  1  0.4  0.4  0.4  1.0
  La  La1  1  0.2  0.2  0.2  1.0
  La  La2  1  0.59  0.59  0.59  1.0

data_SrAcLa2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.22
_cell_length_b   6.22
_cell_length_c   15.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrAcLa2
_chemical_formula_sum   'Sr3 Ac3 La6'
_cell_volume   509.9
_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
  Sr  Sr0  3  0.0  0.0  0.0  1.0
  La  La1  3  0.0  0.0  0.41  1.0
  Ac  Ac2  3  0.0  0.0  0.6  1.0
  La  La3  3  0.0  0.0  0.8  1.0

Sr Ac La La
SrAcLa2 crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 1-coordinate geometry to three equivalent Ac(1), one La(1), and three equivalent La(2) atoms. All Sr(1)-Ac(1) bond lengths are 3.72 Å. The Sr(1)-La(1) bond length is 3.02 Å. All Sr(1)-La(2) bond lengths are 3.75 Å. Ac(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one La(1), and four equivalent La(2) atoms. The Ac(1)-La(1) bond length is 3.02 Å. There is one shorter (3.02 Å) and three longer (4.14 Å) Ac(1)-La(2) bond lengths. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 2-coordinate geometry to one Sr(1), one Ac(1), and three equivalent La(2) atoms. All La(1)-La(2) bond lengths are 3.72 Å. In the second La site, La(2) is bonded in a 10-coordinate geometry to three equivalent Sr(1), four equivalent Ac(1), and three equivalent La(1) atoms.