data_AcLa3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.66
_cell_length_b   7.66
_cell_length_c   6.18
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AcLa3
_chemical_formula_sum   'Ac2 La6'
_cell_volume   313.63
_cell_formula_units_Z   2
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
  Ac  Ac0  1  0.0  0.42  0.54  1.0
  Ac  Ac1  1  0.83  0.21  0.63  1.0
  La  La2  1  0.0  0.17  0.63  1.0
  La  La3  1  0.95  0.55  0.63  1.0
  La  La4  1  0.05  0.55  0.63  1.0
  La  La5  1  0.83  0.46  0.54  1.0
  La  La6  1  0.88  0.09  0.54  1.0
  La  La7  1  0.78  0.09  0.54  1.0

data_AcLa3
_symmetry_space_group_name_H-M   P-1
_cell_length_a   6.18
_cell_length_b   7.66
_cell_length_c   7.66
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   AcLa3
_chemical_formula_sum   'Ac2 La6'
_cell_volume   313.63
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Ac  Ac0  2  0.46  0.59  0.11  1.0
  La  La1  2  0.46  0.36  0.77  1.0
  La  La2  2  0.46  0.41  0.14  1.0
  La  La3  2  0.46  0.47  0.77  1.0

Ac Ac La La La La La La
Ac Ac La La La La La La 0 4 o o o 1 7 o o o 2 6 - o o 3 4 + o o 3 5 o o o 6 7 o o o 
AcLa3 is Hg_xSn structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one AcLa3 cluster. Ac(1) is bonded in a 2-coordinate geometry to one Ac(1), one La(2), one La(3), and two equivalent La(1) atoms. The Ac(1)-Ac(1) bond length is 1.58 Å. The Ac(1)-La(2) bond length is 1.32 Å. The Ac(1)-La(3) bond length is 0.99 Å. There is one shorter (1.49 Å) and one longer (1.98 Å) Ac(1)-La(1) bond length. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 3-coordinate geometry to two equivalent Ac(1) and one La(2) atom. The La(1)-La(2) bond length is 0.98 Å. In the second La site, La(2) is bonded in a 3-coordinate geometry to one Ac(1), one La(1), and one La(3) atom. The La(2)-La(3) bond length is 0.80 Å. In the third La site, La(3) is bonded in an L-shaped geometry to one Ac(1) and one La(2) atom.