data_EuCl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.56
_cell_length_b   7.56
_cell_length_c   4.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuCl3
_chemical_formula_sum   'Eu2 Cl6'
_cell_volume   209.66
_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
  Eu  Eu0  1  0.78  0.18  0.18  1.0
  Eu  Eu1  1  0.0  0.37  0.06  1.0
  Cl  Cl2  1  0.84  0.98  0.18  1.0
  Cl  Cl3  1  0.98  0.56  0.18  1.0
  Cl  Cl4  1  0.6  0.99  0.06  1.0
  Cl  Cl5  1  0.94  0.57  0.06  1.0
  Cl  Cl6  1  0.8  0.99  0.06  1.0
  Cl  Cl7  1  0.18  0.56  0.18  1.0

data_EuCl3
_symmetry_space_group_name_H-M   P-1
_cell_length_a   4.23
_cell_length_b   7.56
_cell_length_c   7.56
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   EuCl3
_chemical_formula_sum   'Eu2 Cl6'
_cell_volume   209.66
_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
  Eu  Eu0  2  0.06  0.39  0.91  1.0
  Cl  Cl1  2  0.06  0.45  0.71  1.0
  Cl  Cl2  2  0.06  0.59  0.29  1.0
  Cl  Cl3  2  0.06  0.79  0.28  1.0

Eu Eu Cl Cl Cl Cl Cl Cl
Eu Eu Cl Cl Cl Cl Cl Cl 0 4 o - o 0 6 o - o 0 2 o - o 0 1 + o o 1 5 - o o 1 3 - o o 1 7 o o o 2 6 o o o 3 5 o o o 3 7 + o o 4 6 o o o 
EuCl3 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two EuCl3 clusters. Eu(1) is bonded in a 2-coordinate geometry to one Cl(1), one Cl(2), and one Cl(3) atom. The Eu(1)-Cl(1) bond length is 1.80 Å. The Eu(1)-Cl(2) bond length is 1.63 Å. The Eu(1)-Cl(3) bond length is 1.48 Å. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 2-coordinate geometry to one Eu(1) and one Cl(2) atom. The Cl(1)-Cl(2) bond length is 0.59 Å. In the second Cl site, Cl(2) is bonded in a 2-coordinate geometry to one Eu(1) and one Cl(1) atom. In the third Cl site, Cl(3) is bonded in a distorted single-bond geometry to one Eu(1) atom.