The structure described by NaEuCl4 is Baddeleyite-derived structured and crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 7-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Eu(1) is bonded to one Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms to form edge-sharing EuCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(1) and one Eu(1) atom. In the second Cl site, Cl(2) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form a mixture of distorted corner and edge-sharing ClNa2Eu2 trigonal pyramids. In the third Cl site, Cl(3) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing ClNa2Eu2 tetrahedra. In the fourth Cl site, Cl(4) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Eu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaEuCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.951
_cell_length_b   7.019
_cell_length_c   7.111
_cell_angle_alpha   89.414
_cell_angle_beta   88.024
_cell_angle_gamma   77.546
_symmetry_Int_Tables_number   1
_cell_volume   338.597
_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
  Na  Na0  1  0.232  0.195  0.535  1.0
  Na  Na1  1  0.768  0.805  0.465  1.0
  Eu  Eu2  1  0.788  0.305  0.051  1.0
  Eu  Eu3  1  0.212  0.695  0.949  1.0
  Cl  Cl4  1  0.608  0.202  0.370  1.0
  Cl  Cl5  1  0.392  0.798  0.630  1.0
  Cl  Cl6  1  0.091  0.003  0.213  1.0
  Cl  Cl7  1  0.909  0.997  0.787  1.0
  Cl  Cl8  1  0.047  0.503  0.246  1.0
  Cl  Cl9  1  0.953  0.497  0.754  1.0
  Cl  Cl10  1  0.567  0.690  0.123  1.0
  Cl  Cl11  1  0.433  0.310  0.877  1.0
[/CIF]
.
The structure described by NaEuCl4 is Baddeleyite-derived structured and crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 7-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Eu(1) is bonded to one Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms to form edge-sharing EuCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(1) and one Eu(1) atom. In the second Cl site, Cl(2) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form a mixture of distorted corner and edge-sharing ClNa2Eu2 trigonal pyramids. In the third Cl site, Cl(3) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing ClNa2Eu2 tetrahedra. In the fourth Cl site, Cl(4) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Eu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaEuCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.951
_cell_length_b   7.019
_cell_length_c   7.111
_cell_angle_alpha   89.414
_cell_angle_beta   88.024
_cell_angle_gamma   77.546
_symmetry_Int_Tables_number   1
_cell_volume   338.597
_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
  Na  Na0  1  0.232  0.195  0.535  1.0
  Na  Na1  1  0.768  0.805  0.465  1.0
  Eu  Eu2  1  0.788  0.305  0.051  1.0
  Eu  Eu3  1  0.212  0.695  0.949  1.0
  Cl  Cl4  1  0.608  0.202  0.370  1.0
  Cl  Cl5  1  0.392  0.798  0.630  1.0
  Cl  Cl6  1  0.091  0.003  0.213  1.0
  Cl  Cl7  1  0.909  0.997  0.787  1.0
  Cl  Cl8  1  0.047  0.503  0.246  1.0
  Cl  Cl9  1  0.953  0.497  0.754  1.0
  Cl  Cl10  1  0.567  0.690  0.123  1.0
  Cl  Cl11  1  0.433  0.310  0.877  1.0
[/CIF]
.